An ignition system (2) for controlling spark generation of a sparkplug (4) in a combustion engine, comprising an electronic circuit (6) comprising an ignition coil (8) including a primary winding (10), and a secondary winding (12) across which the sparkplug (4) is connectable, a voltage source (14) configured to supply energy to said primary winding (10), and a control unit (16) configured to control said spark generation including to initiate spark generation and thereby enter a spark initialization mode. Upon receipt of a breaktrough detection signal (20), the control unit (16) is configured to terminate the spark initialization mode and to enter a spark maintenance and control mode, to control and maintain the spark by controlling the current of the spark to follow a preset value, and to maintain the duration of the spark until a predetermined time period has lapsed. When the predetermined time period has lapsed, the control unit generated a spark termination control signal (22) to be applied to said electronic circuit (6) to terminate the spark and thereby enter a spark termination mode.
F02P 9/00 - Electric spark ignition control, not otherwise provided for
F02P 3/05 - Layout of circuits for control of the magnitude of the current in the ignition coil
F02P 3/06 - Other electric spark ignition installations characterised by the type of ignition power generation storage having capacitive energy storage
F02P 15/08 - Electric spark ignition having characteristics not provided for in, or of interest apart from, groups having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
An ignition coil assembly for installation in a spark plug well of a combustion engine and for enabling a spark of a spark plug installed in a distal end of the spark plug well. The ignition coil assembly includes an ignition coil dimensioned and configured to transform a first voltage to a second voltage for enabling the spark, and an elongated connection portion extending in the spark plug well when the ignition coil assembly is installed in the spark plug well.
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
F02P 13/00 - Sparking plugs structurally combined with other parts of internal-combustion engines
3.
TUBULAR STRUCTURE ADAPTED TO AT LEAST PARTLY ENCLOSE A PENCIL COIL FOR INTERNAL COMBUSTION ENGINES
A tubular structure (100) adapted to connect a valve cover (200) of an internal combustion engine (300) to a portion (310) of the internal combustion engine (300) is disclosed. The tubular structure (100) is adapted to protect an ignition coil (400) from oil for lubrication of parts coverable by the valve cover (200). The ignition coil (400) is mountable at least partly within the tubular structure (100), whereby the tubular structure (100) is capable of forming part of a magnetic shield for shielding the ignition coil (400). The tubular structure (100) comprises a soft magnetic material and wherein at least a portion (106) of the tubular structure (100) has a relative permeability greater than 10 and a resistivity greater than 0.3 microOhmMeter. The portion (106) of the tubular structure (100) extends along and at least partially overlaps with a longest winding of the ignition coil (400) as seen in the longitudinal direction of the ignition coil (400).
F02B 5/00 - Engines characterised by positive ignition
F02B 23/08 - Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
F02B 77/00 - Component parts, details, or accessories, not otherwise provided for
F02P 3/01 - Electric spark ignition installations without subsequent energy storage, i.e. energy supplied by an electrical oscillator
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
F02P 13/00 - Sparking plugs structurally combined with other parts of internal-combustion engines
A battery module (2) and a battery pack (100) are disclosed. The battery module (2) comprises a control circuit (1), a first node (3) and a second node (4) for charging and/or discharging, at least two first branches (71-7M). Each first branch (71-7M) comprises a respective plurality of battery cells (C11-CN1,..., C1M-CNM) of the battery cells (C11-CNM), and a respective first switch (Q11-Q1M). The battery module (2) comprises one or more second branches (81-8M) having respective second switches (Q21-Q2M). The control circuit (1) is provided with a number of connection lines (V1-VN). Each connection line (V1-VN) is arranged to parallelly connect a respective set (C11-C1M, C21-C2M,..., CN1-CNM) of corresponding battery cells (C11-CNM) to each other via a respective controllable over-current protecting component (S11-S1M,..., SN1-SNM). Said each corresponding battery cell (C11-CNM) is comprised in a respective first branch (71-7M) of said at least two first branches (71-7M). The corresponding battery cells are corresponding to each other in that of a respective second count of battery cells towards the first or second node (3, 4) from said each corresponding battery cell in the respective first branch (71-7M) is equal.
H01M 50/509 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
5.
FAULT TOLERANT BATTERY MODULE COMPRISING PARALLEL BRANCHES AND VOLTAGE SENSING ASSEMBLY
A battery module (2) and a battery pack (100) are disclosed. The battery module (2) comprises a control circuit (1), a first node (3) and a second node (4) for charging and/or discharging, and at least two first branches (71-7M). Each first branch (71-7M) comprises a respective plurality of battery cells (C11-CN1,..., C1M-CNM) of the battery cells (C11-CNM), a respective first branch over-current protecting component (F11-F1M), and a respective first switch (Q11-Q1M). The battery module (2) comprises one or more second branches (81-8M) having one or more second switches (Q21-Q2M). Each second branch (81-8M) comprises a respective second switch (Q21-Q2M). The control circuit (1) is provided with a number of connection lines (V1-VN) corresponding to at least a first count of the respective plurality of battery cells (C11-CN1,..., C1M-CNM). Each connection line (V1-VN) is arranged to parallelly connect a respective set (C11-C1M, C21-C2M,..., CN1-CNM) of corresponding battery cells (C11-CNM) to each other via a respective cell over-current protecting component (L11-L1M, L21-L2M,..., LN1-LNM). Said each corresponding battery cell (C11-CNM) is comprised in a respective first branch (71-7M). The corresponding battery cells are corresponding to each other in that a respective second count of battery cells towards the first or second node (3, 4) from said each corresponding battery cell in the respective first branch (71-7M) is equal.
H01M 50/509 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
6.
BATTERY ASSEMBLY WITH CONTROLLABLE VOLTAGE AND METHOD RELATED THERETO
A battery assembly and a control unit for aiming at outputting a target voltage during charging or discharging and a method, a battery assembly and a control unit for maintaining a target voltage of a battery assembly during charging or discharging are disclosed. The battery assembly (100) comprises a first battery module (110) configured to receive a first signal representing a first voltage to be output over the first battery module (110), wherein the first signal is configurable to represent a range of voltages capable of being output over the first battery module (110). Moreover, the battery assembly (100) comprises a plurality of second battery modules (160-180). Each second battery module (160, 170, 180) of the plurality of second battery modules (160-180) is configured to receive a respective second signal, representing a respective configuration, which indicates whether said each second battery module (160, 170, 180) is to be switched-on or bypassed.
B60L 58/18 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
B60L 50/64 - Constructional details of batteries specially adapted for electric vehicles
7.
CIRCUIT ARRANGEMENT FOR CONTROLLING OUTPUT VOLTAGE
A circuit arrangement comprises battery cells forming a plurality of series-connectable cell modules, comprising: a first group of cell modules, each having a first nominal cell module voltage in a range of 30 - 200 V, and at least one second group of cell modules, each a second nominal cell module voltage that is less than the first nominal cell module voltage. The circuit arrangement comprises a control unit configured to: measure the output voltage of the circuit arrangement, and in order to control the measured output voltage towards the voltage target, control at least one respective electronic module to adjust a respective contributing number of cell modules of at least one of the first and second groups. Each cell module is contributing, positively or negatively, to the output voltage of the circuit arrangement.
An ignition coil assembly (100) for installation in a spark plug well (400) of a combustion engine (200) and for enabling a spark of a spark plug (500) installed in a distal end (410) of the spark plug well (400) is disclosed. The ignition coil assembly (100) comprises an ignition coil (125) adapted to transform a first voltage to a second voltage for enabling the spark, and an elongated connection portion (110) extending in the spark plug well (400) when the ignition coil assembly (100) is installed in the spark plug well (400). The ignition coil (125) is connected to a first end (111) of the elongated connection portion (110). The first end (111) of the elongated connection portion (110) is closer to the spark plug (500) than a second end (112) of the elongated connection portion (110) when the ignition coil assembly (100) is installed in the spark plug well (400), whereby the ignition coil assembly (100) is adapted to provide the first voltage to the ignition coil (125) by means of the elongated connection portion (110).
An electronic circuit (101) for controlling a spark of a spark plug (SP1) in a capacitor discharge ignition system (100) for a combustion engine. The electronic circuit (101) comprises an ignition coil (110) dimensioned and configured to provide current to the spark plug (SP1), an ignition capacitor (C1) dimensioned and configured to supply energy to the primary winding (L1), an voltage source (130) dimensioned and configured to supply energy to at least one of the ignition capacitor (C1) and the primary winding (L1), a first switch (SW1) connected to the first primary terminal (TL1) and the first source terminal (TS1), a second switch (SW2) connected to the second capacitor terminal (TC2) and the second source terminal (TS2), and a third switch (SW3) connected to the second capacitor terminal (TC2) and the first source terminal (TS1). A capacitor discharge ignition system (100) including the electronic circuit (101) and a combustion engine including the capacitor discharge ignition system (100).
The invention relates to an improved ignition system for spark ignited combustion engines. According to the invention the voltage over a coil winding 6P on the primary side of the ignition coil is regulated to a sufficiently low voltage level during timed periods of the ignition cycle, such that at least one function out of three in total, i.e. prevention of premature spark-on-make, or spark suppression after onset of ignition, or improved frequency response between primary and secondary side of the ignition coil after end of ignition, is obtained. When applied in an inductive ignition system a differential amplifier (8) may be connected over the primary winding 6P regulating a control switch 2CS via a drive unit (9). The invention is preferably implemented in ignition systems with ion sense circuitry 5C,5R on the secondary side of the ignition coil, and implementing all three functions.
F02P 3/05 - Layout of circuits for control of the magnitude of the current in the ignition coil
F02P 3/055 - Layout of circuits with protective means to prevent damage to the circuit or the ignition coil
F02P 5/145 - Advancing or retarding electric ignition sparkControl therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
11.
BATTERY ASSEMBLY WITH CONTROLLABLE VOLTAGE AND METHOD RELATED THERETO
A battery assembly and a control unit for aiming at outputting a target voltage during charging or discharging and a method, a battery assembly and a control unit for maintaining a target voltage of a battery assembly during charging or discharging are disclosed. The battery assembly (100) comprises a first battery module (110) configured to receive a first signal representing a first voltage to be output over the first battery module (110), wherein the first signal is configurable to represent a range of voltages capable of being output over the first battery module (110). Moreover, the battery assembly (100) comprises a plurality of second battery modules (160-180). Each second battery module (160, 170, 180) of the plurality of second battery modules (160-180) is configured to receive a respective second signal, representing a respective configuration, which indicates whether said each second battery module (160, 170, 180) is to be switched-on or bypassed.
A first battery assembly, a battery assembly, a battery arrangement configured to be operable, during charging or discharging, to distribute a common current delivered to or from a common bus and a use of at least one analog battery module are disclosed. Moreover, it is disclosed a use of at least one analog battery module (110) for distributing current between a plurality of battery strings (113, 163, 173). Each analog battery module (110) of the analog number of analog battery modules (110) is connectable in series with a respective battery string of the battery string number of battery strings. Each analog battery module (110) of the analog number of analog battery modules (110) is configured to receive a respective first signal representing a respective first voltage to be output over the analog battery module (110), wherein the respective first signal is configurable to represent a range of voltages capable of being output over said each analog battery module (110). The distribution of the current between the battery string number of battery strings is at least partially given by the respective voltages of the analog number of analog battery modules (110).
The invention relates to a Magneto ignition system for battery less hand-held combustion engines comprising a claw generator (1) with a stationary circular power coil winding (10) enclosed by two iron claw halves (11, 12) and with a rotating flywheel magnet ring (13) with multiple magnetic poles. The stationary circular coil winding includes a trigger coil with a stationary coil winding (2) arranged in a plane orthogonal to the stationary circular power coil winding. The magneto ignition system further includes an engine control module ECM for establishment of appropriate ignition timing, and an ignition coil module ICM. According to the invention is the stationary circular power coil winding supplying the electrical power supply to both the ignition timing module ECM and the ignition coil module ICM.
H02K 21/04 - Windings on magnets for additional excitation
H02K 21/22 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
F02P 1/02 - Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage the generator rotor being characterised by forming part of the engine flywheel
H01T 13/04 - Means providing electrical connection to sparking plugs
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
H01T 13/38 - Selection of materials for insulation
H01T 21/02 - Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
15.
AN IGNITION SYSTEM AND METHOD CONTROLLING SPARK IGNITED COMBUSTION ENGINES
The invention relates to an improved ignition system for spark ignited combustion engines. According to the invention the voltage over a coil winding 6P on the primary side of the ignition coil is regulated to a sufficiently low voltage level during timed periods of the ignition cycle, such that at least one function out of three in total, i.e. prevention of premature spark-on-make, or spark suppression after onset of ignition, or improved frequency response between primary and secondary side of the ignition coil after end of ignition, is obtained. When applied in an inductive ignition system a differential amplifier (8) may be connected over the primary winding 6P regulating a control switch 2CS via a drive unit (9). The invention is preferably implemented in ignition systems with ion sense circuitry 5C,5R on the secondary side of the ignition coil, and implementing all three functions.
A method for extracting characterizing features from an ion current trace retrieved from spark plugs of cylinders of an internal combustion engine, comprises the steps of: i. dividing the ion current signal into crank angle subintervals; 5 ii. calculating a measure of ion current in each crank angle subinterval; and iii. Performing a calculation on the measure of ion currents from different subintervals such that the result of the calculation is dimension free. Further it relates to a method of monitoring combustion processes where a plurality of ion current signals from a number of spark plugs (4A, 4B) are 10 retrieved and used in combination.
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
G01M 15/11 - Testing internal-combustion engines by detecting misfire
F02D 41/22 - Safety or indicating devices for abnormal conditions
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 41/26 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
The present invention relates to a spark plug extension body connecting an ignition coil with a spark plug for a spark ignited internal combustion engine, as well as a method for providing such a spark plug extension body for reduction of partial electrical discharges in the spark plug extension body. In conventional spark plug extensions are coil springs used as electrical conductor against the spark plug terminal and/or ignition coil terminal. These coil springs cause Corona effects and short circuiting requiring replacement of the spark plug extension. With the invention the entire electrical conductor (CRu, 64, CRL) is in a rod like form and at least both ends (CRu, CRL) of the electrical conductor (CRu, 64, CRL) are made as a monolith in a flexible and electrically conducting polymeric material, preferably electrically conducting rubber.
The invention relates to an inductive position sensor, comprising: a first part with a cylindrical coil winding (14) having a longitudinal direction, a second part with a soft magnetic plunger core (20). The invention also relates to the soft magnetic plunger core and a magnetic shield around said cylindrical coil winding for said inductive position sensor. According to the invention is the soft magnetic plunger core as well as the magnetic shield hollow, preferably with circular cross-section, and made from electrical steel or soft iron sheet material.
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
19.
Method for monitoring combustion processes in a combustion engine
A method for extracting characterizing features from an ion current trace retrieved from spark plugs of cylinders of an internal combustion engine, comprises the steps of: i. dividing the ion current signal into crank angle subintervals; ii. calculating a measure of ion current in each crank angle subinterval; and iii. Performing a calculation on the measure of ion currents from different subintervals such that the result of the calculation is dimension free. Further it relates to a method of monitoring combustion processes where a plurality of ion current signals from a number of spark plugs (4A, 4B) are retrieved and used in combination.
G01M 15/11 - Testing internal-combustion engines by detecting misfire
F02D 41/22 - Safety or indicating devices for abnormal conditions
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 41/26 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
A computer-implemented platform may comprise hardware and software configured to estimate knock intensity and/or manage an engine using knock intensity data. A plurality of knock indicators may be used to model a knock response, providing an improved estimate of knock intensity. Knock intensities from a plurality of combustion cycles may be used to estimate a statistical distribution of knock intensities. The statistical distribution may be used to determine an engine tune state. An engine tune state may be modified via the incorporation of prior knock intensity statistics.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
F02D 41/26 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
A computer-implemented platform may comprise hardware and software configured to manage an engine using knock intensity data. Knock intensities from a plurality of combustion cycles may be used to estimate a statistical distribution of knock intensities. The distribution of knock intensities may be used to determine a Descriptive Statistic, which may represent a state of tune of the engine. A calculated Descriptive Statistic may be compared to a desired Descriptive Statistic (e.g., that is representative of operation during a desired tune state of the engine). A deviation between the calculated and desired knock intensity distributions (e.g., between the calculated DS and desired DS) may be used to adjust a control parameter of the engine. Adjustment may be engine-wide. Adjustment may be cylinder-by-cylinder.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
F02D 41/26 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
The present invention relates to a method for controlling the performance of an engine, comprising the steps detecting an ion current in the form of a first signal analysing said first signal to determine at least one property determining a knock index based on said first signal and preferably on said at least one property combining said knock index with a plurality of factors related to properties of the engine or the operation of the engine to arrive at a engine index, and comparing said engine index with a sensitivity map of the engine to determine a correction required to improve the operation of the engine, and correcting the operation of the engine in accordance with the correction determined. The invention also relates to a system for controlling the performance of an engine.
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 41/26 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
F02P 5/152 - Digital data processing dependent on pinking
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
23.
Ignition system including a measurement device for providing measurement signals to a combustion engine's control system
The present invention relates to an ignition system (T) for a combustion engine, the internal combustion engine comprising a control system, the ignition system (T) further comprising a power source (30), at least one ignition coil (10, 11, 12) having at least one primary coil (L2, L4, L6) and one secondary coil (L3, L5, L7) for a spark plug (13, 14, 15) and a measurement device (50) for at least one of the parameters spark current, ion current, ignition voltage and primary voltage, said measurement device (50) being adapted to provide measurement signals to said control system for regulating the ignition system (T), the ignition system (T) also comprising means for transforming up voltage and storing energy, and a plurality of switches (S1-S7), said control system being adapted to control said switches (S1-S7), by means of said measuring signal(s), for the supply of adaptive spark energy and/or to control the polarity of the spark.
F02P 9/00 - Electric spark ignition control, not otherwise provided for
F02P 15/08 - Electric spark ignition having characteristics not provided for in, or of interest apart from, groups having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
A computer-implemented platform may comprise hardware and software configured to manage an engine using knock intensity data. Knock intensities from a plurality of combustion cycles may be used to estimate a statistical distribution of knock intensities. The distribution of knock intensities may be used to determine a Descriptive Statistic, which may represent a state of tune of the engine. A calculated Descriptive Statistic may be compared to a desired Descriptive Statistic (e.g., that is representative of operation during a desired tune state of the engine). A deviation between the calculated and desired knock intensity distributions (e.g., between the calculated DS and desired DS) may be used to adjust a control parameter of the engine. Adjustment may be engine-wide. Adjustment may be cylinder-by-cylinder.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
A computer-implemented platform may comprise hardware and software configured to estimate knock intensity and/or manage an engine using knock intensity data. A plurality of knock indicators may be used to model a knock response, providing an improved estimate of knock intensity. Knock intensities from a plurality of combustion cycles may be used to estimate a statistical distribution of knock intensities. The statistical distribution may be used to determine an engine tune state. An engine tune state may be modified via the incorporation of prior knock intensity statistics.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
The following invention relates to an ignition coil assembly for an ignition system comprising an ignition coil where said assembly has a main axis and is configured for insertion into and/or removal out of a well associated with an internal combustion engine, wherein the assembly comprises an elongated extension body made of flexible material, said extension body comprising an upper end portion and a lower end portion wherein the extension body is arranged to be transversally bendable in relation to the main axis so that the upper end portion and the lower end portion may assume an angle (α) in relation to each other.
H01T 13/04 - Means providing electrical connection to sparking plugs
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
H01T 13/44 - Sparking plugs structurally combined with other devices with transformers, e.g. for high-frequency ignition
This invention relates to an engine for a vehicle using alternative fuel, preferably gas, comprising an engine (5) having a spark ignited ignition system (2) wherein said ignition system (2) includes misfire detection by means of a sensor device (4) providing information to a control system (20), connected to or within said ignition system (2), and wherein said combustion includes diluted operation to optimize emissions wherein said sensor device (4) includes an ion sensing measurement means (40) arranged to measure an ion current in said engine (5) and that said ignition system (2) has a built-in function to detect misfiring through an analysis of the ion current of the engine (5) during combustion.
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
G01M 15/11 - Testing internal-combustion engines by detecting misfire
F02M 21/02 - Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
29.
Method for monitoring combustion processes in a combustion engine
A method for extracting characterizing features from an ion current trace retrieved from spark plugs of cylinders of an internal combustion engine, comprises the steps of: i. dividing the ion current signal into crank angle subintervals; ii. calculating a measure of ion current in each crank angle subinterval; and iii. Performing a calculation on the measure of ion currents from different subintervals such that the result of the calculation is dimension free. Further it relates to a method of monitoring combustion processes where a plurality of ion current signals from a number of spark plugs (4A, 4B) are retrieved and used in combination.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
30.
SYSTEM AND METHOD FOR CONTROLLING THE PERFORMANCE OF AN ENGINE
The present invention relates to a method for controlling the performance of an engine, comprising the steps detecting an ion current in the form of a first signal analysing said first signal to determine at least one property determining a knock index based on said first signal and preferably on said at least one property combining said knock index with a plurality of factors related to properties of the engine or the operation of the engine to arrive at a engine index, and comparing said engine index with a sensitivity map of the engine to determine a correction required to improve the operation of the engine, and correcting the operation of the engine in accordance with the correction determined. The invention also relates to a system for controlling the performance of an engine.
F02D 35/02 - Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
The following invention relates to an ignition coil assembly for an ignition system comprising an ignition coil where said assembly has a main axis and is configured for insertion into and/or removal out of a well associated with an internal combustion engine, wherein the assembly comprises an elongated extension body made of flexible material, said extension body comprising an upper end portion and a lower end portion wherein the extension body is arranged to be transversally bendable in relation to the main axis so that the upper end portion and the lower end portion may assume an angle (α) in relation to each other.
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
F02P 13/00 - Sparking plugs structurally combined with other parts of internal-combustion engines
The present invention relates to an ignition system (T) for a combustion engine, the internal combustion engine comprising a control system, the ignition system (T) further comprising a power source (30), at least one ignition coil (10, 1 1, 12) having at least one primary coil (L2, L4, L6) and one secondary coil (L3, L5, L7) for a spark plug (13, 14, 15) and a measurement device (50) for at least one of the parameters spark current, ion current, ignition voltage and primary voltage, said measurement device (50) being adapted to provide measurement signals to said control system for regulating the ignition system (T), the ignition system (T) also comprising means for transforming up voltage and storing energy, and a plurality of switches (S1-S7), said control system being adapted to control said switches (S1-S7), by means of said measuring signal(s), for the supply of adaptive spark energy and/or to control the polarity of the spark.
F02P 17/12 - Testing characteristics of the spark, ignition voltage or current
F02P 15/08 - Electric spark ignition having characteristics not provided for in, or of interest apart from, groups having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
33.
ENGINE WITH MISFIRE DETECTION FOR VEHICLES USING ALTERNATIVE FUELS
This invention relates to an engine for a vehicle using alternative fuel, preferably gas, comprising an engine (5) having a spark ignited ignition system (2) wherein said ignition system (2) includes misfire detection by means of a sensor device (4) providing information to a control system (20), connected to or within said ignition system (2), and wherein said combustion includes diluted operation to optimize emissions wherein said sensor device (4) includes an ion sensing measurement means (40) arranged to measure an ion current in said engine (5) and that said ignition system (2) has a built-in function to detect misfiring through an analysis of the ion current of the engine (5) during combustion.
G01M 15/11 - Testing internal-combustion engines by detecting misfire
F02D 41/22 - Safety or indicating devices for abnormal conditions
F02P 5/152 - Digital data processing dependent on pinking
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
A method for extracting characterizing features from an ion current trace retrieved from spark plugs of cylinders of an internal combustion engine, comprises the steps of: i. dividing the ion current signal into crank angle subintervals; ii. calculating a measure of ion current in each crank angle subinterval; and iii. Performing a calculation on the measure of ion currents from different subintervals such that the result of the calculation is dimension free. Further it relates to a method of monitoring combustion processes where a plurality of ion current signals from a number of spark plugs (4A, 4B) are retrieved and used in combination.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02D 41/22 - Safety or indicating devices for abnormal conditions
F02P 5/152 - Digital data processing dependent on pinking
G01M 15/11 - Testing internal-combustion engines by detecting misfire
35.
Device and method for analysing a performance of an engine
The present invention relates to a device for analyzing a cylinder wise performance of an internal combustion engine, comprising ion current measurement means that are arranged to measure an ion current in a engine and that are also arranged to produce a first signal corresponding to a measurement performed by said ion current measurement means, and also comprising an amplifier that is connected to said ion current measurement means and that is arranged to receive and amplify said first signal in order to produce an amplified signal, and further also comprising first analyzing means for analyzing said amplified signal for detecting an indication of a knock event in the engine, wherein said amplifier is a variable-gain amplifier and that said device further comprises second analysis means that is arranged to receive and analyze said amplified signal and to adjust a gain of said amplifier. The invention also relates to a method for analyzing a performance of a engine.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
36.
DEVICE AND METHOD FOR ANALYSING A PERFORMANCE OF AN ENGINE
The present invention relates to a device for analysing a cylinder wise performance of an internal combustion engine, comprising ion current measurement means that are arranged to measure an ion current in a engine and that are also arranged to produce a first signal corresponding to a measurement performed by said ion current measurement means, and also comprising an amplifier that is connected to said ion current measurement means and that is arranged to receive and amplify said first signal in order to produce an amplified signal, and further also comprising first analysing means for analysing said amplified signal for detecting an indication of a knock event in the engine, wherein said amplifier is a variable-gain amplifier and that said device further comprises second analysis means that is arranged to receive and analyse said amplified signal and to adjust a gain of said amplifier. The invention also relates to a method for analysing a performance of a engine.
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
F02P 5/152 - Digital data processing dependent on pinking
The present invention relates to a method for monitoring an ignition system, wherein the ignition system comprises a charge coil (L1) for charging the ignition system, a primary coil (L4) and a secondary coil (L5), said primary and secondary coils (L4, L5) being arranged to generate a voltage for spark generation, and a control unit (M1), characterised in the steps a) providing a separate coil (L3) adjacent to at least one of the charge coil (L1), the primary coil (L4) and the secondary coil (L5) b) using the control unit (M1) to monitor a magnetic flux at the separate coil (L3), and c) using information regarding said magnetic flux as input for controlling at least one property of an operation of the ignition system. The invention also relates to a control system for an ignition system.
F02P 1/00 - Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage
F02P 5/04 - Advancing or retarding electric ignition sparkControl therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
This invention relates to a method and system for generating energy/power in a capacitive discharge ignition system, said system comprising at least one charge winding (L) which by means of a fly wheel and via a first rectifier device (D1) charges a charge capacitor (C1) connected to a primary winding (P) of an ignition voltage transformer (30) in order to provide said primary winding (P) with energy for generation of a spark via a secondary winding (S) of said transformer (30), wherein a voltage control/switching unit (10) is arranged to enable output of energy (Out21) from said primary winding (P).
F02P 3/06 - Other electric spark ignition installations characterised by the type of ignition power generation storage having capacitive energy storage
This invention relates to a method and system for generating energy/power in a capacitive discharge ignition system, said system comprising at least one charge winding (L) which by means of a fly wheel and via a first rectifier device (Dl) charges a charge capacitor (Cl) connected to a primary winding (P ) of an ignition voltage transformer (30) in order to provide said primary winding (P) with energy for generation of a spark via a secondary winding (S) of said transformer (30), wherein a voltage control/switching unit (10) is arranged to enable output of energy ( Out21) from said primary winding (P).
By incorporating digital control systems for ignition of, and to some extent for fuel injection in, small internal combustion engines, opportunities have been created for the connection of external computers, in order thereby to be able to change the characteristics of the control system, as well as to be able to read operational data from the same. The operational data may be e.g. operating time and trip meter. The method according to the invention means that a combined communication port and stop entry is created, which will result in a cost-effective implementation of the communication interface when a stop entry with an associated transient protection already exists.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
The present invention relates to a method for providing a temperature compensated measurement of the inductance of a coil (16) in an inductive position sensor, the inductance of the coil (16) being an indication of a position to be measured. The method comprises: charging the coil (16) with a charging current by means of a current generator (10); discharging the coil subsequent to the charging by means of a discharging circuit (34), wherein a discharge time (Lt) of the discharging is a measure of the inductance of the coil (16); and adjusting the charging current in relation to the resistance (Ri) of the coil (16) so as to compensate for energy losses due to temperature induced resistance (Ri) variations in the coil (16) during the discharging. The present invention also relates to a corresponding circuit.
G01D 3/036 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
G01R 1/44 - Modifications of instruments for temperature compensation
G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
42.
METHOD AND APPARATUS FOR RAISING THE SPARK ENERGY IN CAPACITIVE IGNITION SYSTEMS
The present invention refers to an apparatus for raising the spark energy in capacitive ignition systems comprising at least one charge winding (L1) which via a first rectifier device (D1) charges a charge capacitor (C1) connected to the primary winding of an 5 ignition voltage transformer in order to provide said primary winding with energy for generation of a spark characterised in that additionally a second rectifier device (D2) and a switching device (Q2) are arranged in such a way that the switching device periodically can short circuit the charge winding and thereby increase the charge of the charge capacitor at low engine speeds.
By incorporating digital control systems for ignition of, and to some extent for fuel injection in, small internal combustion engines, opportunities have been created for the connection of external computers, in order thereby to be able to change the characteristics of the control system, as well as to be able to read operational data from the same. The operational data may be e.g. operating time and trip meter. The method according to the invention means that a combined communication port and stop entry is created, which will result in a cost-effective implementation of the communication interface when a stop entry with an associated transient protection already exists.
F02D 41/26 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
F02B 77/08 - Safety, indicating, or supervising devices
F02D 41/06 - Introducing corrections for particular operating conditions for engine starting or warming up
F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
patents
