Abstract

A piston assembly is provided with a vaulted cooling chamber defined between the piston head and the piston skirt. The vaulted cooling chamber includes an inner gallery, an outer gallery, and a plurality of channels which connect the inner gallery to the outer gallery. In certain embodiments, the plurality of channels circumferentially extends at least 120 degrees around the longitudinal axis. In other certain embodiments, the piston assembly further includes a plurality of walls which define the plurality of channels, and there are at least four walls. In other certain embodiments, the piston head is coupled to the piston skirt by a plurality of fasteners, and each of the fasteners is located within 45 circumferential degrees of a fastener axis.

IPC Classes  ?

• F02F 3/22 - Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
• F02F 3/00 - Pistons

Abstract

An engine is provided with a cylinder liner that extends beyond the surface of the crankcase surrounding the cylinder. When the engine is oriented in an inverted V-block configuration, the extension of the cylinder liner provides a barrier to oil that can pool on the crankcase surface and otherwise enter the interior of the cylinder, absent such a barrier.

IPC Classes  ?

• F02F 1/00 - CylindersCylinder heads
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke
• F02B 75/22 - Multi-cylinder engines with cylinders in V-, fan-, or star-arrangement

Abstract

An oil tank for an engine is provided with a separator that reduces the amount of entrained air in the oil tank. The separator includes a body with an outer wall, a divider wall, and an outlet. The divider wall is located between the outer wall and at least a first portion of the outlet. The divider wall is offset from a curved portion of the outer wall, which defines a flow channel through which the oil flows towards the outlet. The oil increases speed as travels around the divider wall. This movement keeps the oil with some and/or more entrained air closer to the outer wall. In contrast, the oil with less or no entrained air moves closer to the divider wall and may travel more directly to the outlet.

IPC Classes  ?

• F01M 11/03 - Mounting or connecting of lubricant purifying means relative to the machine or engineDetails of lubricant purifying means
• F16N 39/00 - Arrangements for conditioning of lubricants in the lubricating system

Abstract

An air-shut off valve for an engine is provided to reduce the number of engine cycles that occur if an engine starts in reverse. The air shut-off valve includes a shaft centered on and extending along a longitudinal axis and a valve plate centered on a central axis. The valve plate is mounted on the shaft and positioned such that the central axis and the longitudinal axis do not intersect with each other. The valve plate can be actuated automatically (i.e., through air interfacing with the valve plate) or manually (i.e., by a user) between an opened position and a closed position with respect to the air intake tube.

IPC Classes  ?

• F02M 35/10 - Air intakesInduction systems
• F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
• F02M 35/116 - Intake manifolds for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft
• F16K 31/10 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet with additional mechanism between armature and closure member

Abstract

An oil tank for an engine is provided with a separator that reduces the amount of entrained air in the oil tank. The separator includes a body with an outer wall, a divider wall, and an outlet. The divider wall is located between the outer wall and at least a first portion of the outlet. The divider wall is offset from a curved portion of the outer wall, which defines a flow channel through which the oil flows towards the outlet. The oil increases speed as travels around the divider wall. This movement keeps the oil with some and/or more entrained air closer to the outer wall. In contrast, the oil with less or no entrained air moves closer to the divider wall and may travel more directly to the outlet.

IPC Classes  ?

• F01M 11/03 - Mounting or connecting of lubricant purifying means relative to the machine or engineDetails of lubricant purifying means
• F16N 39/00 - Arrangements for conditioning of lubricants in the lubricating system

Abstract

An engine is provided with a cylinder liner that extends beyond the surface of the crankcase surrounding the cylinder. When the engine is oriented in an inverted V-block configuration, the extension of the cylinder liner provides a barrier to oil that can pool on the crankcase surface and otherwise enter the interior of the cylinder, absent such a barrier.

IPC Classes  ?

• F02F 1/00 - CylindersCylinder heads
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke
• F02B 75/22 - Multi-cylinder engines with cylinders in V-, fan-, or star-arrangement

Abstract

A piston is provided with a gapless ring positioned in a subport position. Specifically, the gapless ring is positioned between the air ports and the crankcase of the engine. The gapless ring includes a rail and an annular ring received within the rail. The ring includes a ring gap and the rail includes a rail gap. When the rail receives the annular ring, the ring gap and rail gap are spaced apart in a circumferential direction such that the gaps do not overlap. In certain embodiments, the rail includes a notch. When the annular ring is received within the notch, the annular ring and rail are biased against rotating with respect to each other. In certain other embodiments, the gapless ring includes an oil scraping surface.

IPC Classes  ?

• F02F 5/00 - Piston rings, e.g. associated with piston crown
• F02F 3/00 - Pistons
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke

Abstract

A wrist pin cap for a piston. The wrist pin cap is configured to form an interference fit with the piston. In specific embodiments, the wrist pin cap is positioned within the piston adjacent to an end of a wrist pin. In certain specific embodiments, the wrist pin cap is configured to form an interference fit with a counterbore of the piston. Some specific embodiments include a method for shrink fitting a wrist pin cap within a piston. In more specific embodiments, the wrist pin cap is shrunk by an application of liquid nitrogen.

IPC Classes  ?

• F16J 1/18 - Securing of gudgeon-pins

Abstract

An engine is provided with various enhanced features. For example, a 2-stroke diesel engine has a porting design that enhances the efficiency of a scavenging event. In specific embodiments, a four-piece piston is positioned in each cylinder of the engine. The four-piece piston includes a bowl, a ring retainer, a skirt, and a wrist-pin bearing. In various embodiments, fuel pumps are coupled to fuel channels or high-pressure lines to provide a constant and equal high-pressure fuel supply to engine cylinders. In more specific embodiments, the length of each of the high-pressure lines is the same. In certain specific embodiments, complimentary screws form a supercharger that further improves engine efficiency by providing high-pressure intake air to the porting process.

IPC Classes  ?

• F02B 25/04 - Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
• F02B 23/06 - Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke

Abstract

An engine is provided with a cylinder liner that extends beyond the surface of the crankcase surrounding the cylinder. When the engine is oriented in an inverted V-block configuration, the extension of the cylinder liner provides a barrier to oil that can pool on the crankcase surface and otherwise enter the interior of the cylinder, absent such a barrier.

IPC Classes  ?

• F02F 1/00 - CylindersCylinder heads
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke
• F02B 75/22 - Multi-cylinder engines with cylinders in V-, fan-, or star-arrangement

Goods & Services

diesel engines not for land vehicles; aircraft engines; aircraft engine installation kits, not for land vehicles, comprising specially adapted metal mounting structures that attach to the aircraft and secure the engine to other aircraft engine kit parts, and the following separate kits: cooling system kits in the nature of air, coolant, fuel and oil radiators, coolers, and fans; air induction system kits used for engine air induction in the nature of tubing, air scoops, and flow dividers for water entrapment and draining; lubrication system kits in the nature of self-lubricating water and fuel tanks, pumps and lines for engine use; fuel system kits in the nature of pumps, filters, fuel lines, attenuators, and coolers; instrumentation kits in the nature of temperature, pressure, rotational speed, and fluid flow rate sensors required to monitor and control an engine; control system kits in the nature of engine fuel and air systems controls, propeller and propeller controls, electrical power generation controls, controls for cabin heating; cooling system kits in the nature of air ducts, heat exchangers; fire prevention system kits in the nature of fire-resistant and fire-proof materials and fire-suppression systems comprised of charged bottles, charge gages, mounting bases and straps, pull cables, nozzles, fittings, tubing, stickers and cowl flaps; and fuel injection system kits for engines

Abstract

A 2-cycle, direct-injection diesel engine configured to accommodate low cetane diesel and jet fuels. The engine includes combustion chambers having surfaces which are operable at high temperatures during engine operation to increase the combustion rate of low cetane fuels. The engine is further configured to reduce starting times in cold and/or low pressure situations such as those experienced during attempts to restart a plane engine at relatively high altitudes.

IPC Classes  ?

• F01P 3/02 - Arrangements for cooling cylinders or cylinder heads
• F02B 9/02 - Engines characterised by other types of ignition with compression ignition
• F02F 3/00 - Pistons
• F02B 37/00 - Engines characterised by provision of pumps driven at least for part of the time by exhaust
• F02B 23/06 - Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
• F02B 33/34 - Engines with pumps other than of reciprocating-piston type with rotary pumps
• F02B 37/04 - Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke
• F02F 1/00 - CylindersCylinder heads
• F02B 33/02 - Engines with reciprocating-piston pumpsEngines with crankcase pumps
• F02B 1/12 - Engines characterised by fuel-air mixture compression with compression ignition
• F02B 61/04 - Adaptations of engines for driving vehicles or for driving propellersCombinations of engines with gearing for driving propellers

Goods & Services

Aircraft engines; aircraft engine installation kits comprised of specially adapted metal mounting structures, attached to the aircraft, for securing the engine, along with attachment points for connecting other aircraft engine kit parts, namely, cooling systems in the nature of air, coolant, fuel and oil radiators, coolers, and fans, air induction systems in the nature of tubing, air scoops, flow dividers, water entrapment and draining used for engine induction air, lubrication systems, namely, water and fuel tanks, pumps and lines, fuel systems in the nature of pumps and lines, fuel systems in the nature of pumps, filters, fuel lines, attenuators, and coolers, instrumentation in the nature of temperature, pressure, rotational speed, and fluid flow rate sensors required to monitor and control an engine, control systems in the nature of engine fuel and air systems controls, propeller and propeller controls, electrical power generation and controls, controls for cabin heating and cooling systems, namely, air ducts, heat exchangers, fire-suppression systems comprised of charged bottles, charge gages, mounting bases and straps, pull cables, nozzles, fittings, tubing, and stickers, and cowling, namely, cowl flaps

Abstract

A 2-cycle, direct-injection diesel engine configured to accommodate low cetane diesel and jet fuels. The engine includes combustion chambers having surfaces which are operable at high temperatures during engine operation to increase the combustion rate of low cetane fuels. The engine is further configured to reduce starting times in cold and/or low pressure situations such as those experienced during attempts to restart a plane engine at relatively high altitudes.

IPC Classes  ?

• F01P 3/02 - Arrangements for cooling cylinders or cylinder heads
• F02B 9/02 - Engines characterised by other types of ignition with compression ignition
• F02B 23/06 - Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
• F02B 33/34 - Engines with pumps other than of reciprocating-piston type with rotary pumps
• F02B 37/04 - Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke
• F02F 1/00 - CylindersCylinder heads
• F02F 3/00 - Pistons
• F02B 1/12 - Engines characterised by fuel-air mixture compression with compression ignition
• F02B 33/02 - Engines with reciprocating-piston pumpsEngines with crankcase pumps
• F02B 37/00 - Engines characterised by provision of pumps driven at least for part of the time by exhaust
• F02B 61/04 - Adaptations of engines for driving vehicles or for driving propellersCombinations of engines with gearing for driving propellers

Abstract

A single input engine controller and system are provided for translating a single input indicative of the amount of fuel to be supplied to an engine from a fuel control interface into separate signals for controlling the amount of fuel supplied to the engine and the RPM of a propeller powered by that engine. The single input controller translating the single input into the separate signal for the RPM of the propeller according to a fuel efficiency relationship between the fuel amount and the propeller RPM.

IPC Classes  ?

• B64D 31/02 - Initiating means
• B64D 35/00 - Transmitting power from power plants to propellers or rotorsArrangements of transmissions

Abstract

A 2-cycle, direct-injection diesel engine configured to accommodate low cetane diesel and jet fuels. The engine includes combustion chambers having surfaces which are operable at high temperatures during engine operation to increase the combustion rate of low cetane fuels. The engine is further configured to reduce starting times in cold and/or low pressure situations such as those experienced during attempts to restart a plane engine at relatively high altitudes.

IPC Classes  ?

• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke
• F02B 37/00 - Engines characterised by provision of pumps driven at least for part of the time by exhaust
• F02B 33/02 - Engines with reciprocating-piston pumpsEngines with crankcase pumps
• F02B 1/12 - Engines characterised by fuel-air mixture compression with compression ignition

Abstract

An internal combustion engine that includes a crankcase having a crankcase pressure defined within the crankcase relative to an ambient pressure. The crankcase pressure varies in response to operation of the internal combustion engine. A crankcase pressure regulator is in fluid communication with the crankcase, and the crankcase pressure regulator includes a first passageway defining a first flow path, a second passageway defining a second flow path in a parallel arrangement to the first passageway. When the crankcase pressure is less than a first predetermined pressure, the first valve moves to the open position to allow a fluid flow into the crankcase through the first passageway. When the crankcase pressure is greater than a second predetermined pressure, the second valve moves from the closed position to the open position to allow a fluid flow from the crankcase through the second passageway.

IPC Classes  ?

• F01M 13/02 - Crankcase ventilating or breathing by means of additional source of positive or negative pressure
• F16K 17/19 - Equalising valves predominantly for tanks

Abstract

An internal combustion engine that includes a crankcase having a crankcase pressure defined within the crankcase relative to an ambient pressure. The crankcase pressure varies in response to operation of the internal combustion engine. A crankcase pressure regulator is in fluid communication with the crankcase, and the crankcase pressure regulator includes a first passageway defining a first flow path, a second passageway defining a second flow path in a parallel arrangement to the first passageway. When the crankcase pressure is less than a first predetermined pressure, the first valve moves to the open position to allow a fluid flow into the crankcase through the first passageway. When the crankcase pressure is greater than a second predetermined pressure, the second valve moves from the closed position to the open position to allow a fluid flow from the crankcase through the second passageway.

IPC Classes  ?

• F01M 13/00 - Crankcase ventilating or breathing
• F02B 25/06 - Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke the cylinder-head ports being controlled by working pistons, e.g. by sleeve-shaped extensions thereof

Goods & Services

diesel engines not for land vehicles

Goods & Services

Diesel engines for recreational vehicles