Controller for reducing acceleration slippage of a driven wheel
First Claim
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1. A controller for reducing acceleration slippage at a driven wheel of an automobile having an internal combustion engine, the controller comprising:
- a driven-wheel speed sensor for sensing a speed of the driven wheel;
an acceleration-slippage detector for calculating slippage at the driven wheel based on the sensed driven-wheel speed when the automobile is accelerating;
a throttle-valve controller for adjusting an opening of a throttle valve of the engine according to a control amount to control the slippage;
a brake controller for adjusting a brake force on the driven wheel to control the slippage;
a brake-force detector for detecting the brake force on the driven-wheel; and
a correcting means for correcting the control amount such that the throttle valve is biased towards the closed position when the brake-force detector detects that the brake force on the driven wheel is increasing.
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Abstract
The acceleration-slippage controller reduces acceleration slippage at a driven wheel of an automobile by adjusting brake force on the driven wheel, and an opening of a throttle valve of the engine. When the brake-force control increases the brake force to reduce the driven-wheel rotation, the moving speed of the throttle valve is corrected toward the closed position. Because the throttle valve control correlates to the brake control, their combined control can quickly reduce the driven-wheel speed to its target without causing hunting of the throttle valve opening.
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Citations
7 Claims
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1. A controller for reducing acceleration slippage at a driven wheel of an automobile having an internal combustion engine, the controller comprising:
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a driven-wheel speed sensor for sensing a speed of the driven wheel; an acceleration-slippage detector for calculating slippage at the driven wheel based on the sensed driven-wheel speed when the automobile is accelerating; a throttle-valve controller for adjusting an opening of a throttle valve of the engine according to a control amount to control the slippage; a brake controller for adjusting a brake force on the driven wheel to control the slippage; a brake-force detector for detecting the brake force on the driven-wheel; and a correcting means for correcting the control amount such that the throttle valve is biased towards the closed position when the brake-force detector detects that the brake force on the driven wheel is increasing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification