Hybrid Power Train Structure In Off-Road Vehicle
AssigneeZhejiang CFMOTO Power Co., Ltd.
InventorJiajun LI
Life of this patent
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Abstract
A hybrid power train structure for off-road vehicles (ATVs, UTVs and SSVs) uses an internal combustion engine (“ICE”) rotating a crankshaft through a continuously variable transmission (“CVT”) as a primary source of locomotion torque, but also includes a driving/generator motor which, in certain established conditions, can either provide an additional or alternative source of locomotion torque or can harvest electricity from the torque created by the internal combustion engine. The driving/generator motor is an axial flux motor of small size for its relative torque output, which can either be directly coupled to the CVT output shaft or, when additionally used as a starter motor for the ICE in an automatic ICE starting and stopping routine.
Claims19
A hybrid power train structure for an off-road vehicle, comprising:
- an internal combustion engine causing rotation of a crankshaft;
- a continuously variable transmission powered by rotation of the crankshaft to output power on a CVT output shaft, with a CVT driven pulley wheel mounted on the CVT output shaft such that the CVT output shaft outputs torque always at the rotational speed of the CVT driven pulley wheel, the CVT driven pulley wheel having an effective diameter which is continuously variable;
- a driving/generator motor coaxially mounted and directly connected to the CVT output shaft in a clutchless connection such that the driving/generator motor is driven or drives always at the rotational speed of the CVT driven pulley wheel, the driving/generator motor operating under control of a vehicle power control unit to operate optionally in a hybrid mode wherein torque from the driving/generator motor is added to torque from the internal combustion engine, or in a power harvesting mode which generates electricity from torque on the CVT output shaft;
- and
- a drive shaft powered by torque from the CVT output shaft for locomotion of the off-road vehicle.
A hybrid power train structure for an off-road vehicle comprising:
- an internal combustion engine causing rotation of a crankshaft;
- a continuously variable transmission powered by rotation of the crankshaft to output power on a CVT output shaft;
- a driving/generator motor directly coupled to the CVT output shaft, operating under control of a vehicle power control unit to operate optionally in a hybrid mode wherein torque from the driving/generator motor is added to torque from the internal combustion engine, or in a power harvesting mode which generates electricity from torque on the CVT output shaft;
- a gear shift assembly powered by the CVT output shaft;
- a drive shaft powered by the gear shift assembly;
- and
- a differential powered by the drive shaft.
A hybrid power train structure for an off-road vehicle, comprising:
- an internal combustion engine causing rotation of a crankshaft;
- a continuously variable transmission powered by rotation of the crankshaft to output power on a CVT output shaft;
- and
- a driving/generator motor operating under control of a vehicle power control unit to operate optionally in a hybrid mode wherein torque from the driving/generator motor is added to torque from the internal combustion engine, or in a power harvesting mode which generates electricity from torque from the internal combustion engine, wherein the driving/generator motor is an axial flux motor;
- wherein torque from the CVT output shaft causes locomotion of the off-road vehicle.
Dependencies are inferred from the claim text.