Abstract

A method for controlling a motive power unit of a pedal vehicle propulsion assembly is disclosed. The method comprises interrupting and resuming pedaling by a user, calculating a first speed as a function of the speed of first and second motors, calculating a second speed at the defined point of the propulsion assembly as a function of a measurement of the vehicle speed, calculating a difference between the first and second speeds, controlling a first motor by a control unit, controlling the second motor with a torque setpoint lower in absolute value than the torque corresponding to the level of assistance when the difference between the first and second speeds is above a threshold, and controlling the second motor by the control unit with a torque setpoint corresponding to the level of assistance when the difference between the first and second speeds is below a threshold.

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 6/45 - Control or actuating devices therefor

Abstract

A method of assisted differential transmission for electric bicycle as well as the powertrain associated to this method, comprising two motors articulated around of a differential system comprising a ring gear having an inner surface and an element cooperating with this inner surface, the periphery of said element containing, at all times, the geometric center of the ring gear.

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 11/02 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of unchangeable ratio

Goods & Services

Bicycles; Bicycle frames; Touring bicycles; Pedal bicycles; Motorised bicycles; Electric bicycles; Bicycle motors; Engines for bicycles; Structural parts of bicycles; Vehicles; Electric vehicles; Gearboxes; Bicycle wheels; Bicycle kickstands; Spokes for bicycle wheels; Rims for bicycle wheels; Bicycle stabilisers; Bicycle horns; Bicycle cranks; Folding bikes; Tandem bicycles; Racing bicycles; Balance bicycles [vehicles]; Saddle covers for bicycles; Shock absorbers for bicycles; Inner tubes for bicycle tyres; Luggage carriers for cycles; Bicycle handlebars; Front forks for cycles; Hubs for bicycle wheels; Bicycle brakes; Bicycle mudguards. Engineering services; Scientific research and development; Technical assessments relating to design; Industrial analysis, of industrial research and of industrial design; Scientific and technological services and research and development relating thereto.

Abstract

The invention relates to a propulsion system (1) for a pedal vehicle. The propulsion system (1) comprises a power unit (1) allowing the power originating from a bottom-bracket axle (2) to be combined with the power from two motors (40, 50), a first deformable transmission element (23) allowing the transmission of power to the rear wheel (73) and a casing assembly (19) enclosing particularly the first deformable transmission element (23) and the power unit (1), with the exception of part of the bottom-bracket axle (2).

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62K 19/34 - Bottom brackets
• B62K 19/44 - Chain-guards forming part of frame
• B62M 9/02 - Transmissions characterised by use of an endless chain, belt, or the like of unchangeable ratio
• B62M 11/14 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears

Goods & Services

Computers for use with bicycles; Electric connectors; Global positioning systems for use with bicycles; Satellite navigation systems; Tachometers; Distance meters; Apparatus for recording distance; Operating software; Software for GPS navigation; Mobile application software; Computer software for mobile applications that enable interaction and interface between vehicles and mobile devices; Instruments for diagnosis [for scientific use]; Bicycle speedometers. Bicycles; Bicycle frames; Touring bicycles; Pedal bicycles; Motorised bicycles; Electric bicycles; Motors for bicycles; Engines for bicycles; Structural parts of bicycles; Vehicles; Electric vehicles; Electrically powered vehicles; Electrically operated vehicles; Gearboxes; Wheels for bicycles; Bicycle stands; Bicycle spokes; Bicycle rims; Bicycle stabilisers; Bicycle horns; Bicycle cranks; Collapsible bicycles; Tandem bicycles; Racing bicycles; Bicycle structural parts; Balance bicycles [vehicles]; Covers for bicycle saddles; Shock absorbers for bicycles; Inner tubes for bicycles; Luggage carriers for bicycles; Bicycle handlebars; Front forks for bicycles; Wheel hubs for bicycles; Brakes for bicycles; Splash guards [mudguards] for bicycles. Retail services in relation to bicycles; Wholesale services in relation to vehicles.

Goods & Services

Computers for use with bicycles; Electric connectors; Global positioning systems for use with bicycles; Satellite navigation systems; Tachometers; Distance meters; Apparatus for recording distance; Operating software; Software for GPS navigation; Mobile application software; Computer software for mobile applications that enable interaction and interface between vehicles and mobile devices; Instruments for diagnosis [for scientific use]; Bicycle speedometers. Bicycles; Bicycle frames; Touring bicycles; Pedal bicycles; Motorised bicycles; Electric bicycles; Motors for bicycles; Engines for bicycles; Structural parts of bicycles; Vehicles; Electric vehicles; Electrically powered vehicles; Electrically operated vehicles; Gearboxes; Wheels for bicycles; Bicycle stands; Bicycle spokes; Bicycle rims; Bicycle stabilisers; Bicycle horns; Bicycle cranks; Collapsible bicycles; Tandem bicycles; Racing bicycles; Bicycle structural parts; Balance bicycles [vehicles]; Covers for bicycle saddles; Shock absorbers for bicycles; Inner tubes for bicycles; Luggage carriers for bicycles; Bicycle handlebars; Front forks for bicycles; Wheel hubs for bicycles; Brakes for bicycles; Splash guards [mudguards] for bicycles. Retail services in relation to bicycles; Wholesale services in relation to vehicles.

Abstract

A powertrain for a pedal vehicle includes a crank axle and an output sprocket rotating around a first rotation axis. The coupling between the crank axle and the output sprocket goes through an epicyclic gear system that includes a ring gear, a planet carrier, and a sun gear (13) which rotate around a second rotation axis that is spatially offset from the first rotation axis.

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
• B62M 11/14 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears