Control apparatus for raising the idle speed (ISC value) after the lockup clutch is unlocked
First Claim
1. An apparatus for controlling an engine of a motor vehicle, and a lock-up clutch disposed between the engine and an automatic transmission for direct connection therebetween, wherein lock-up clutch control means is provided for engaging said lock-up clutch during deceleration of the motor vehicle, said apparatus comprising:
- vehicle deceleration detecting means for detecting a decelerating state of the motor vehicle; and
engine deceleration restricting means, responsive to an output indicating vehicle deceleration by said detecting means, for restricting a rate of decrease of a speed of said engine for a period following detection of said decelerating state of the motor vehicle by said vehicle deceleration detecting means,said lock-up clutch control means commanding said lock-up clutch to be engaged after said engine deceleration restricting means is operated said restricting means being disabled after said lockup clutch has been commanded to be engaged.
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Accused Products
Abstract
An apparatus for controlling an engine of a motor vehicle, and a lock-up clutch disposed between the engine and an automatic transmission for direct connection therebetween. The apparatus includes a lock-up clutch control device for engaging the lock-up clutch during deceleration of the motor vehicle, a vehicle deceleration detector for detecting a decelerating state of the motor vehicle, and an engine deceleration restrictor for restricting a rate of decrease of the engine speed for a period following detection of the decelerating state of the vehicle, so as to facilitate an engaging action of the lock-up clutch during deceleration of the vehicle.
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Citations
11 Claims
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1. An apparatus for controlling an engine of a motor vehicle, and a lock-up clutch disposed between the engine and an automatic transmission for direct connection therebetween, wherein lock-up clutch control means is provided for engaging said lock-up clutch during deceleration of the motor vehicle, said apparatus comprising:
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vehicle deceleration detecting means for detecting a decelerating state of the motor vehicle; and engine deceleration restricting means, responsive to an output indicating vehicle deceleration by said detecting means, for restricting a rate of decrease of a speed of said engine for a period following detection of said decelerating state of the motor vehicle by said vehicle deceleration detecting means, said lock-up clutch control means commanding said lock-up clutch to be engaged after said engine deceleration restricting means is operated said restricting means being disabled after said lockup clutch has been commanded to be engaged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for controlling an engine of a motor vehicle, and a lock-up clutch disposed between the engine and an automatic transmission for direct connection therebetween, wherein lock-up clutch control means is provided for engaging said lock-up clutch during deceleration of the motor vehicle, said apparatus comprising:
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vehicle deceleration detecting means for detecting a decelerating state of the motor vehicle; and engine deceleration restricting means, responsive to an output of said vehicle deceleration detecting means, for restricting a rate of decrease of a speed of said engine for a period following detection of said decelerating state of the motor vehicle by said vehicle deceleration detecting means; said lock-up clutch control means commanding said lock-up clutch to be engaged after said engine deceleration detecting means is operated; said apparatus further comprising; first speed detecting means for detecting said speed of said engine; second speed detecting means for detecting an input speed of said automatic transmission; determining means for determining whether a difference between the speed of said engine and said input speed of the transmission lower than the speed of the engine has been reduced to a predetermined reference value; and disabling means for disabling said engine deceleration restricting means to stop restricting said rate of decrease in the speed of said engine, when said determining means determines that said difference has been reduced to said predetermined reference value.
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Specification