Hybrid vehicle and method of controlling the travel of the vehicle
AssigneeTokyo R & D Co., Ltd.
InventorsMasao Ono, Nobuhito Ohnuma, Jun Morimoto, Hiroko Yoshikawa, Akifumi Kurita, Osamu Watanabe
Life of this patent
Estimating the term…
Abstract
A hybrid vehicle (1) including an internal combustion engine and electric motors and selectively uses them as a running drive source according to a running state. When one of wheels (5) driven by an engine (7) skids to rotate excessively, a motor (13) connected to that wheel is caused to make a regenerative operation to remedy the skid of the wheel, and running traction made insufficient due to the skid is compensated by driving another wheel (4) by a motor (12) of another wheel by using electric energy recovered by the regenerative operation.
Claims20
A hybrid vehicle including an engine operated by burning a fuel and a plurality of electric motors operated by electric energy, characterized in that:
- at least one pair of right and left wheels are linked with both the engine and the motors, and when either of the wheels skids to rotate excessively while the vehicle is driven by the engine, a motor connected to the skidded wheel is made to effect regenerative operation to brake the skidded wheel to remedy the skid of the skidded wheel, wherein the motors are disposed to be drivable for recharging by the engine, and the wheels linked to the engine are mounted to be disengageable from the engine.
A hybrid vehicle including an engine operated by burning a fuel and a plurality of electric motors operated by electric energy, characterized in that:
- at least one pair of right and left wheels are linked with both the engine and the motors, and when either of the wheels skids to rotate excessively while the vehicle is driven by the engine, a motor connected to the skidded wheel is made to effect regenerative operation to brake the skidded wheel to remedy the skid of the skidded wheel, wherein the motor driving force is distributed to compensate the traction balance of the respective wheels lowered due to the skid.
A hybrid vehicle including an engine operated by burning a fuel and electric motors operated by electric energy, characterized in that:
- a transmission includes a first operation section to change gears of at least an engine running system and a second operation section to switch between forward and backward drives of an electric motor running system;
- both the operation sections have a neutral lever position formed commonly;
- and
- an operation lever is provided to be operable in both the operation sections so to alternatively switch between the engine running system and the electric motor running system.
A hybrid vehicle including an engine operated by burning a fuel and electric motors operated by electric energy, characterized by:
- a wheel speed sensor connected to each driven wheel;
- and
- an arithmetic unit which calculates a vehicle speed from a signal output from the wheel speed sensor, calculates a wheel speed of a drive wheel from the number of rotations of an associated electric motor, and controls output of the associated electric motor with a predetermined electric motor output control starting speed and electric motor regenerative control starting speed determined as thresholds.
A method of controlling running of a hybrid vehicle including an engine operated by burning a fuel and electric motors operated by electric energy, characterized in that:
- the vehicle has a wheel speed sensor connected to each driven wheel and an arithmetic unit which calculates a vehicle speed from a signal output from the wheel speed sensor, calculates a wheel speed of a drive wheel from the number of rotations of the an associated electric motor, and controls output of the associated electric motor with a predetermined electric motor output control starting speed and electric motor regenerative control starting speed determined as thresholds;
- and
- output control of the associated electric motor is started when an engine throttle is opened by the driver, a vehicle speed estimated by calculating and the wheel speed of the drive wheel are compared, and when it is judged that the drive wheel is spinning, output of the associated electric motor which drives that drive wheel is controlled.
A hybrid vehicle including an engine operated by burning a fuel and electric motors operated by electric energy, characterized by:
- a yaw sensor for detecting a lateral acceleration of the vehicle;
- and
- an arithmetic unit for controlling output of the electric motors with a predetermined electric motor output control starting yaw sensor output and electric motor regenerative control starting yaw sensor output determined as thresholds.
A method of controlling running of a hybrid vehicle including an engine operated by burning a fuel and electric motors operated by electric energy, characterized in that:
- the vehicle is provided with a yaw sensor for detecting a lateral acceleration of the vehicle and an arithmetic unit for controlling output of the electric motors with a predetermined electric motor output control starting yaw sensor output and electric motor regenerative control starting yaw sensor output determined as thresholds;
- and
- output control of the electric motors is started when the engine throttle is opened by the driver, and output of the electric motors driving the drive wheels is controlled when it exceeds the thresholds.
A hybrid vehicle including an engine operated by burning a fuel and electric motors operated by electric energy, and a clutch provided between the engine and a transmission, characterized in that
- a one-way clutch is arranged next to the clutch;
- and
- the one-way clutch transmits engine torque in a drive direction only.
Dependencies are inferred from the claim text.