Vehicle-drive control system and method and program therefor
First Claim
1. A vehicle-drive control system, comprising:
- target-engine-speed acquisition means for acquiring a target engine speed necessary to reduce engine speed, thereby stopping an engine at a target stop position;
crank-angle acquisition means for acquiring a crank angle indicative of the position of a crankshaft; and
target-engine-speed correction means for correcting a target engine speed according to the acquired crank angle.
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Abstract
The invention includes a target-engine-speed acquisition element that acquires a target engine speed necessary to reduce engine speed, thereby stopping the engine at a target stop position; a crank-angle acquisition element that acquires a crank angle indicative of the position of a crankshaft; and a target-engine-speed correction element that corrects the target engine speed according to the acquired crank angle. Because the target engine speed is corrected according to the crank angle, the engine can be stopped at the target stop position even if the friction in the engine, the electric motor, etc. varies, the temperature or viscosity of the lubricating and cooling oils varies, or the vehicle is accelerated or decelerated during the reduction of the engine speed.
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Citations
21 Claims
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1. A vehicle-drive control system, comprising:
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target-engine-speed acquisition means for acquiring a target engine speed necessary to reduce engine speed, thereby stopping an engine at a target stop position;
crank-angle acquisition means for acquiring a crank angle indicative of the position of a crankshaft; and
target-engine-speed correction means for correcting a target engine speed according to the acquired crank angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for controlling the drive of a vehicle, comprising:
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reducing an engine speed;
acquiring a target engine speed which is necessary to stop an engine at a target stop position;
acquiring a crank angle indicative of the position of a crankshaft; and
correcting the target engine speed according to the acquired crank angle.
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21. A program for a method for controlling the drive of a vehicle, wherein a computer functions as target-engine-speed acquisition means for acquiring a target engine speed necessary to reduce engine speed, thereby stopping the engine at a target stop position;
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as a crank-angle acquisition means for acquiring a crank angle indicative of the position of a crankshaft; and
as a target-engine-speed correction means for correcting the target engine speed according to the acquired crank angle.
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Specification