Hybrid drive apparatus for vehicle
AssigneeAisin Aw Co., Ltd.
InventorsShigeo Tsuzuki, Kiyoshi Kurita, Yoshinori Matsushita
Life of this patent
Estimating the term…
Abstract
A hybrid drive apparatus for a vehicle which is capable of improving the response in restarting an engine during the running of a vehicle. As a result, a shock due to deceleration can be reduced. The hybrid drive apparatus for a vehicle incorporates an engine, a motor generator, a clutch, a transmission unit and a control unit for controlling the other elements. The control unit incorporates a standby control device for realizing a constant cranking characteristic to improve the starting response at the start of the engine by transmitting the power of the motor generator to the engine and controlling the engagement pressure of the clutch, thus revolving the engine to a cranking start position.
Claims26
A hybrid drive apparatus for a vehicle, comprising
- an engine;
- a motor generator;
- a transmission unit capable of transmitting the power of said engine and said motor generator to wheels;
- and
- a control unit for controlling said engine, said motor generator and transmission of power of said engine and said motor generator to the wheels, wherein said control unit incorporates:
- starting control means for starting said engine when a vehicle is driven in a state where said engine is stopped and power of said motor generator is transmitted to the wheels, and
- standby control means for performing control to revolve said engine to a cranking start position prior to the start of said engine performed by said starting control means.
A hybrid drive apparatus for a vehicle, comprising:
- an engine;
- a motor generator;
- a clutch capable of controlling power transmission between said engine and said motor generator;
- a transmission unit capable of transmitting the power of said engine and said motor generator to wheels;
- and
- a control unit for controlling said engine, said motor generator and said clutch, wherein said control unit incorporates:
- starting control means for engaging said clutch so as to start said engine when a vehicle is driven in a state where said engine is stopped, said clutch is disengaged to allow said motor generator to transmit its power to the wheels;
- and
- standby control means for performing control to bring said clutch to engagement to revolve said engine to a cranking start position prior to the start of said engine performed by said starting control means, said standby control means incorporating standby pressure control means for controlling the engagement pressure of said clutch such that the capacity of torque transmitted by said clutch becomes a capacity that allows said engine to revolve to the cranking start position, and said starting control means incorporating cranking pressure control means for controlling the engagement pressure of said clutch such that the capacity of torque transmitted by said clutch becomes equal to or lower than an output torque from said motor generator subsequent to the standby control.
A hybrid drive apparatus for a vehicle, comprising:
- an engine;
- a motor generator;
- a starter motor for starting said engine;
- a clutch capable of controlling power transmission between said engine and said motor generator;
- a transmission unit capable of transmitting the power of said engine and said motor generator to wheels;
- and
- a control unit for controlling said engine, said motor generator, said starter motor and said clutch, wherein said control unit incorporates:
- starting control means for starting said engine when a vehicle is driven in a state where said engine is stopped, said clutch is disengaged and the power of said motor generator is transmitted to the wheels, and
- standby control means for performing control to bring said clutch to engagement to revolve said engine to a cranking start position prior to the start of said engine performed by said starting control means, said standby control means incorporating standby pressure control means for controlling the engagement pressure of said clutch such that the capacity of torque transmitted by said clutch becomes a capacity that allows said engine to revolve to the cranking start position, and said starting control means starting said starter motor and bringing said clutch to engagement simultaneously with completion of the standby control.
Dependencies are inferred from the claim text.