System for controlling an engine and method therefor
First Claim
1. A system for controlling an engine, comprising:
- (a) first means for adjusting an intake air quantity supplied to the engine according to an opening angle thereof;
(b) second means for actuating said first means to adjust the opening angle according to an angular displacement thereof;
(c) third means for detecting a characteristic value corelative to an engine output;
(d) fourth means for detecting the angular displacement of said second means;
(e) fifth means for detecting an engine speed;
(f) sixth means for calculating a target value of the engine output corelative value from the angular displacement of said second means and engine speed detected by said fourth and fifth means;
(g) seventh means for comparing the calculated target value of the engine output corelative value by said sixth means with the detected value of engine output corelative value by said third means;
(h) eighth means for calculating the opening angle value of said first means on the basis of a comparison result of said seventh means; and
(i) ninth means for further actuating said first means to adjust the opening angle of said first means according to the calculated opening angle of said eighth means in addition to the adjustment of the opening angle of said first means by means of said second means so that the detected value of the engine output corelative value by said third means coincides with the calculated target value thereof by said sixth means.
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Accused Products
Abstract
A system and method for controlling an engine, in which a value correlative to an engine output is detected, a target value of the engine output correlative value is calculated on the basis of an angular displacement of an accelerator pedal and engine speed, the detected value correlative to the engine output is compared with the target value, an opening angle of a throttle valve located within a throttle chamber of the engine for adjusting an intake air quantity supplied to the engine according to its opening angle is calculated on the basis of the comparison result, and the throttle valve is actuated to adjust the intake air quantity according to the calculated opening angle so that the detected value correlative to the engine output coincides with the target value.
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Citations
20 Claims
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1. A system for controlling an engine, comprising:
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(a) first means for adjusting an intake air quantity supplied to the engine according to an opening angle thereof; (b) second means for actuating said first means to adjust the opening angle according to an angular displacement thereof; (c) third means for detecting a characteristic value corelative to an engine output; (d) fourth means for detecting the angular displacement of said second means; (e) fifth means for detecting an engine speed; (f) sixth means for calculating a target value of the engine output corelative value from the angular displacement of said second means and engine speed detected by said fourth and fifth means; (g) seventh means for comparing the calculated target value of the engine output corelative value by said sixth means with the detected value of engine output corelative value by said third means; (h) eighth means for calculating the opening angle value of said first means on the basis of a comparison result of said seventh means; and (i) ninth means for further actuating said first means to adjust the opening angle of said first means according to the calculated opening angle of said eighth means in addition to the adjustment of the opening angle of said first means by means of said second means so that the detected value of the engine output corelative value by said third means coincides with the calculated target value thereof by said sixth means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for controlling an engine, comprising the steps of:
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(a) detecting a value corelative to an engine output; (b) detecting an angular displacement of an accelerator means according to which an opening angle of a throttle valve means located within a throttle chamber is varied; (c) detecting an engine speed; (d) calculating a target value of the characteristic corelative to the engine output from the detected angular displacement in said step (b) and detected engine speed in said step (c); (e) comparing the calculated target value in said step (d) with the detected value corelative to the engine output in said step (a); (f) calculating the opening angle value of the throttle valve means through which the throttle valve means is displaced so as to adjust an intake air quantity supplied to the engine on the basis of a comparison result in said step (e); and (g) actuating the throttle valve means to adjust the opening angle of the throttle valve means according to the calculated opening angle of the throttle valve means in said step (f) so that the detected value correlative to the engine output in said step (a) coincides with the target value calculated in said step (f). - View Dependent Claims (18, 19, 20)
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Specification