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Control apparatus and method of controlling internal combustion engine mounted on vehicle

A technology for control devices and internal combustion engines, which is applied in electrical control, engine control, fuel injection control, etc., and can solve the problem of increased possibility of internal combustion engines experiencing stalls

Inactive Publication Date: 2010-07-07
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, in this case, the probability of the internal combustion engine experiencing a stall inevitably becomes high

Method used

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  • Control apparatus and method of controlling internal combustion engine mounted on vehicle
  • Control apparatus and method of controlling internal combustion engine mounted on vehicle
  • Control apparatus and method of controlling internal combustion engine mounted on vehicle

Examples

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no. 1 example

[0053] According to the first embodiment of the present invention described in detail above, the following effects are obtained. When the engine 1 is shifted to idling while the vehicle is stopped, if the vehicle is running on a road surface with a low coefficient of friction, the target engine speed is decreased from the point of time corresponding to the start of the decrease in the driving demand value. A value corresponding to a reduction in the drive requirement value for auxiliary equipment. Therefore, the running of the automobile is quickly stopped without stalling the engine 1 . In addition, if the car is not running on a road surface with a low coefficient of friction, after a delay time has elapsed from the time point corresponding to the start of the reduction in the driving demand value, the target engine speed is reduced by the amount corresponding to the decrease in the driving demand value of the auxiliary equipment. value. Therefore, the engine 1 is prevente...

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Abstract

An idle speed control apparatus for an internal combustion engine of a vehicle to adjust an engine speed to a target engine speed set in accordance with a magnitude of a drive request value for an auxiliary driven by the engine when a speed of the vehicle is below a predetermined speed to idle the engine, that reduces the drive request value for the auxiliary when executing the idle speed control, and that reduces the target engine speed by a value equivalent to a reduction in the drive request value after lapse of a prescribed delay time from a time point corresponding to start of reduction of the drive request value, the control apparatus comprising engine speed reduction means for reducing the target engine speed before lapse of the delay time if the vehicle is traveling on a road surface with low friction coefficient.

Description

technical field [0001] The present invention relates to a control device and method for controlling an internal combustion engine mounted on a vehicle. Background technique [0002] In an internal combustion engine mounted on a vehicle such as an automobile, in the process of stopping the vehicle, if the speed of the vehicle is equal to or lower than a predetermined speed for shifting to the idling operation, an operation for adjusting the engine speed during the idling operation is performed. Idle speed control to target engine speed. The target rotational speed used in this idling rotational speed control is variably set in accordance with the magnitude of the drive request of the auxiliary equipment driven by the internal combustion engine. As the drive requirements of the auxiliary equipment increase, the target rotational speed is set higher. In this way, the target rotational speed is made variable according to the magnitude of the driving torque of the auxiliary equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D31/00F02D41/12F02D41/08
CPCF02D41/083F02D2200/702F02D31/003F02D41/12F02D31/008
Inventor 角冈卓正源寺良行
Owner TOYOTA JIDOSHA KK
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