Parallel hybrid vehicle
AssigneeJATCO Ltd
InventorMasato Fujikawa
Life of this patent
Estimating the term…
Abstract
In a parallel hybrid vehicle, a controlling section controls an engine and a motor/generator, a torque from the engine and the motor/generator being transmitted to driven wheels via a transmission and a drive shaft. The controlling section comprises: an engine torque calculating section that calculates an engine torque and a torsional vibration suppression torque calculating section that calculates a torsional vibration suppression torque to suppress a torsional vibration developed on the drive shaft according to the engine torque calculated by the engine torque calculating section, the torsional vibration suppression torque calculated by the torsional vibration suppression torque calculating section being outputted from the motor/generator.
Claims20
A hybrid vehicle, comprising:
- an engine;
- a transmission;
- a motor/generator having both functions of an electric motor and a generator;
- a torque synthesis mechanism that synthesizes output torques of the engine and of the motor/generator;
- a lock-up clutch to directly couple the engine and the motor/generator;
- and
- a torque controlling section that controls a torque of the motor/generator in such a manner that an engine speed is maintained at a predetermined speed, with the lock-up clutch in a non-clutched state during a start of the vehicle, the torque controlling section comprising:
- an engine torque calculating section that calculates an engine torque;
- and a first torque calculating section that calculates a first torque to suppress a torsional vibration developed on a drive shaft according to the calculated engine torque.
A hybrid vehicle comprising:
- an engine;
- a transmission;
- a motor/generator having both functions of an electric motor and a generator;
- and
- a controlling section that controls the engine and the motor/generator, a torque from the engine and the motor/generator being transmitted to driven wheels via a transmission and a drive shaft, the controlling section comprising:
- an engine torque calculating section that calculates an engine torque and a torsional vibration suppression torque calculating section that calculates a torsional vibration suppression torque to suppress a torsional vibration developed on the drive shaft according to the engine torque calculated by the engine torque calculating section, the torsional vibration suppression torque calculated by the torsional vibration suppression torque calculating section being outputted from the motor/generator.
Dependencies are inferred from the claim text.