Controller for reducing acceleration slippage of a driven wheel
First Claim
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1. A controller for reducing acceleration slippage of a driven wheel of an automobile with an internal combustion engine, the controller comprising:
- a slippage detecting means for detecting slippage of the driven wheel when the automobile is accelerating;
a throttle-valve control means for adjusting an opening of a sub-throttle valve of the engine to reduce the slippage when the detected slippage exceeds a first reference value; and
a torque reducing means for reducing an output torque of the engine to reduce the slippage only while the detected slippage exceeds a second reference value which is greater than the first reference value, said torque reducing means being operational for no more than a predetermined period.
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Abstract
A controller for reducing acceleration slippage of a driven wheel starts the throttle-valve control, the brake control, and the engine output torque control when acceleration slippage is detected. The output torque control is executed together with the brake control for a limited period after the detection of acceleration slippage, thus compensating for the slow effect of the throttle-valve control on the output torque. The controller quickly reduces acceleration slippage without adversely affecting the engine operation.
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Citations
23 Claims
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1. A controller for reducing acceleration slippage of a driven wheel of an automobile with an internal combustion engine, the controller comprising:
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a slippage detecting means for detecting slippage of the driven wheel when the automobile is accelerating; a throttle-valve control means for adjusting an opening of a sub-throttle valve of the engine to reduce the slippage when the detected slippage exceeds a first reference value; and a torque reducing means for reducing an output torque of the engine to reduce the slippage only while the detected slippage exceeds a second reference value which is greater than the first reference value, said torque reducing means being operational for no more than a predetermined period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A controller for reducing acceleration slippage of a driven wheel of an automobile with an internal combustion engine, the controller comprising:
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a slippage detecting means for detecting slippage of the driven wheel when the automobile is accelerating; a throttle-valve control means for adjusting an opening of a sub-throttle valve of the engine to reduce the slippage when the detected slippage exceeds a first reference value; a brake control means for adjusting brake force of the driven wheel to reduce the slippage when the detected slippage exceeds a second reference value which is greater than the first reference value; and a torque reducing means for receding an output torque of the engine to reduce the slippage only while the brake control means performs the brake force adjustment and the detected slippage exceeds the second reference value, said torque reducing means being operational for no more than a predetermined period. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A controller for reducing acceleration slippage of a driven wheel of an automobile with an internal combustion engine, the controller comprising:
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a slippage detecting means for detecting slippage of the driven wheel when the automobile is accelerating; a throttle-valve control means for adjusting an opening of a sub-throttle valve of the engine to reduce the slippage when the detected slippage exceeds a first reference value; and a torque reducing means for receding an output torque of the engine to reduce the slippage only during a first occurrence period starting when the acceleration of the driven wheel exceeds a positive reference value and ending when the driven wheel acceleration falls below a negative reference value. - View Dependent Claims (17, 18)
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19. A controller for reducing acceleration slippage of a driven wheel of an automobile with an internal combustion engine, the controller comprising:
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a slippage detecting means for detecting slippage of the driven wheel when the automobile is accelerating; a throttle-valve control means for adjusting an opening of a sub-throttle valve of the engine to reduce the slippage when the detected slippage exceeds a first reference value; and a torque reducing means for receding an output torque of the engine to reduce the slippage for only a predetermined period after the detected slippage exceeds a second reference value which is greater than the first reference value. - View Dependent Claims (20, 21, 22, 23)
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Specification