ENGINE START CONTROLLING APPARATUS AND METHOD FOR HYBRID VEHICLE
First Claim
1. A hybrid-vehicle engine start control system, comprising:
- an engine;
a motor disposed between the engine and a vehicle driving shaft;
a first clutch disposed between the engine and the motor, the first clutch operable to engage and disengage the engine; and
a controller configured to;
increase a driving torque of the motor in response to a request for an increase in a driving force; and
start the engine from a disengaged state, including;
increase a transmission torque capacity of the first clutch at a first velocity in a first engaging phase; and
change the transmission torque capacity of the first clutch at a second velocity slower than the first velocity in a second engaging phase after the first engaging phase is complete.
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Accused Products
Abstract
A hybrid-vehicle engine start controlling apparatus includes an engine, a motor connected to a vehicle driving shaft, a first engaging element provided between the engine and the motor for connecting and disconnecting the engine and the motor and engine start control means. The engine start controlling means is configured to start the engine by increasing a driving torque of the motor and increasing a transmission torque capacity of the first engaging element so as to increase a rotation speed of the engine by the driving torque of the motor in a state in which the engine is stopped and the first engaging element is released. The engine start controlling means includes a first engaging phase for increasing the transmission torque capacity of the first engaging element at a first velocity, and a second engaging phase for changing the transmission torque capacity at a second velocity lower than the first velocity.
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Citations
20 Claims
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1. A hybrid-vehicle engine start control system, comprising:
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an engine; a motor disposed between the engine and a vehicle driving shaft; a first clutch disposed between the engine and the motor, the first clutch operable to engage and disengage the engine; and a controller configured to; increase a driving torque of the motor in response to a request for an increase in a driving force; and start the engine from a disengaged state, including; increase a transmission torque capacity of the first clutch at a first velocity in a first engaging phase; and change the transmission torque capacity of the first clutch at a second velocity slower than the first velocity in a second engaging phase after the first engaging phase is complete. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A hybrid-vehicle engine start control system, comprising:
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an engine; a motor disposed between the engine and a vehicle driving shaft; a first clutch disposed between the engine and the motor, the first clutch engaging and disengaging the engine; and a controller operable to start the engine from a disengaged state, the controller configured to; increase a driving torque of the motor; increase a transmission torque capacity of the first clutch to a torque required to start the engine, thereby initiating a rotation speed of the engine; and further increase the transmission torque capacity of the first clutch until the rotational speed of the engine conforms to a rotational speed of the motor.
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13. An engine start controller for a hybrid vehicle, the vehicle including a motor, an engine and a first clutch disposed between the motor and the engine to engage and disengage the engine, the controller comprising:
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means for increasing a driving torque of the motor; means for increasing a transmission torque capacity of the first clutch at a first velocity; and means for changing the transmission torque capacity of the first clutch to a second velocity slower than the first velocity so as to conform a rotation speed of the engine to a rotation speed of the motor.
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14. A method for controlling the engine start of a hybrid-vehicle, the hybrid-vehicle including a motor, an engine and a first clutch disposed between the motor and the engine to engage and disengage the engine, the method comprising:
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increasing a driving torque of the motor; increasing a transmission torque capacity of the first clutch at a first velocity; and changing the transmission torque capacity of the first clutch to a second velocity slower than the first velocity so as to conform a rotation speed of the engine to a rotation speed of the motor. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification