US 4,729,356 AGranted

Control systems for vehicle engines

AssigneeMazda Motor Corporation

InventorsTadashi Kaneko, Itaru Okuno, Nagahisa Fujita

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Abstract

A control system for a vehicle engine comprises a first detector for detecting a controlled variable on an accelerator, a setting device for determining a fundamental control variable on an engine output adjusting device, such as a throttle valve, based on an output of the first detector, a driving device for actuating the engine output adjusting device in accordance with the fundamental control variable, a second detector for detecting a demand for acceleration of a vehicle, a compensating device for revising the fundamental control variable to produce a compensated control variable on the engine output adjusting device so that the engine output adjusting device is actuated in accordance with the compensated control variable when the demand for acceleration of the vehicle is detected by the second detector, a restoring device for restoring the engine output adjusting device at a predetermined restoration speed to be actuated in accordance with the fundamental control variable after the engine output adjusting device is actuated in accordance with the compensated control variable, a third detector for detecting a travelling condition of the vehicle, and a restoration speed setting device for varying the predetermined restoration speed in response to the travelling condition of the vehicle detected by the third detector.

Claims16

Dependent claims

A control system for a vehicle engine comprising;

engine output adjusting means for controlling an output of the vehicle engine,
first detecting means for detecting a controlled variable on accelerating means accompanying with the vehicle engine,
control variable setting means for determining a fundamental control variable on said engine output adjusting means based on a detection output of said first detecting means,
driving means for actuating said engine output adjusting means in accordance with said fundamental control variable so as to cause the vehicle engine to have a predetermined normal output,
second detecting means for detecting a demand for acceleration of a vehicle employing the vehicle engine,
compensating means for revising said fundamental control variable to produce a compensated control variable on said engine output adjusting means so that said engine output adjusting means is actuated to cause the vehicle engine to have an augmented output in accordance with said compensated control variable when the demand for acceleration of the vehicle is detected by said second detecting means,
restoring means for restoring said engine output adjusting means at a predetermined restoration speed to be actuated in accordance with said fundamental control variable so as to restore the vehicle engine to have the predetermined normal output after said engine output adjusting means is actuated in accordance with said compensated control variable,
third detecting means for detecting a travelling condition of the vehicle, and
restoration speed setting means for varying said predetermined restoration speed in response to the travelling condition of the vehicle detected by said third detecting means.

6 more elements

A control system for a vehicle engine comprising;

first detecting means for detecting a controlled variable on accelerating means accompanying with the vehicle engine,
throttle opening degree setting means for determining a fundamental opening degree of a throttle valve based on a detection output of said first detecting means,
throttle driving means for actuating the throttle valve in accordance with an output of said throttle opening degree setting means so as to cause the throttle valve to have an opening degree corresponding to said fundamental opening degree,
second detecting means for detecting an operation speed of the accelerating means when the accelerating means is operated to increase the opening degree of the throttle valve,
compensating means for revising said fundamental opening degree to produce a compensated opening degree of the throttle valve so that the throttle valve is caused to have an augmented opening degree in accordance with said compensated opening degree when the operation speed of accelerating means detected by said second detecting means is not less than a predetermined value,
restoring means for restoring the throttle valve at a predetermined restoration speed to have an opening degree corresponding the fundamental opening degree determined said throttle opening degree setting means after having the augmented opening degree in accordance with said compensated opening degree,
third detecting means for detecting a travelling condition of a vehicle employing the vehicle engine, and
restoration speed setting means for varying said predetermined restoration speed in response to an output of said third detecting means.

5 more elements

A control system for a vehicle engine comprising;

first detecting means for detecting a controlled variable on accelerating means accompanying with the vehicle engine,
throttle opening degree setting means for determining a fundamental opening degree of a throttle valve based on a detection output of said first detecting means,
throttle driving means for actuating the throttle valve in accordance with an output of said throttle opening degree setting means so as to cause the throttle valve to have an opening degree corresponding to said fundamental opening degree,
second detecting means for detecting an operation speed of the accelerating means when the accelerating means is operated to increase the opening degree of the throttle valve,
compensating means for revising said fundamental opening degree to produce a compensated opening degree of the throttle valve so that the throttle valve is caused to have an augmented opening degree in accordance with said compensated opening degree when the operation speed of accelerating means detected by said second detecting means is not less than a predetermined value,
restoring means for restoring the throttle valve at a predetermined restoration speed to have an opening degree corresponding the fundamental opening degree determined said throttle opening degree setting means after having the augmented opening degree in accordance with said compensated opening degree,
third detecting means for detecting a travelling condition of a vehicle employing the vehicle engine, and
restoration speed determining means for determining said predetermined restoration speed in response to the travelling condition of the vehicle detected by said third detecting means.

5 more elements

Dependencies are inferred from the claim text.