Engine idle stop control system for vehicles
First Claim
1. An engine idle stop control system for a vehicle, comprising:
- an engine(1), a motor/generator(2) connected to the engine(1), an automatic transmission(3) which transmits the rotation of the engine(1) to a drive wheel, a sensor(18) which detects a vehicle stationary state, a sensor(15) which detects an accelerator pedal depression amount, and a microprocessor(10) which is programmed to;
stop the engine(1) according to conditions when the vehicle has been stationary, restart the engine(1) by starting the motor/generator(2) when a request to restart the engine(1) which has stopped, is determined, control absorption of torque by the motor/generator(2) so that the starting torque according to the accelerator pedal depression after restart, is effectively the same torque for starting from the engine stop state as for starting from the engine idle rotation state.
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Accused Products
Abstract
An engine 1 is stopped according to conditions when a vehicle has stopped, and the engine 1 is started by starting a motor/generator 2 when a request to restart the engine 1 which has stopped, is determined. Engine torque is absorbed by the motor/generator 2 so that that the starting torque according to an accelerator pedal depression after restart, is effectively the same torque for starting from the engine stop state as for starting from the engine idle state. In this way, the same starting performance is obtained when the vehicle starts from the engine stop state as when the vehicle starts from the engine idle rotation state.
17 Citations
8 Claims
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1. An engine idle stop control system for a vehicle, comprising:
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an engine(1), a motor/generator(2) connected to the engine(1), an automatic transmission(3) which transmits the rotation of the engine(1) to a drive wheel, a sensor(18) which detects a vehicle stationary state, a sensor(15) which detects an accelerator pedal depression amount, and a microprocessor(10) which is programmed to;
stop the engine(1) according to conditions when the vehicle has been stationary, restart the engine(1) by starting the motor/generator(2) when a request to restart the engine(1) which has stopped, is determined, control absorption of torque by the motor/generator(2) so that the starting torque according to the accelerator pedal depression after restart, is effectively the same torque for starting from the engine stop state as for starting from the engine idle rotation state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An engine idle stop control system for a vehicle, comprising:
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an engine(1), a motor/generator(2) connected to the engine(1), an automatic transmission(3) which transmits the rotation of the engine(1) to a drive wheel, means(18) for detecting a vehicle stationary state, means(15) for detecting an accelerator pedal depression amount, means(10) for stopping the engine(1) according to conditions when the vehicle has been stationary, means(10) for restarting the engine by starting the motor/generator(2) when a request to restart the engine which has stopped, is determined, and means(10) for controlling to make the motor/generator(2) absorb engine torque so that the starting torque according to the accelerator pedal depression after restart, is effectively the same torque for starting from the engine stop state as for starting from the engine idle rotation state.
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Specification