Vehicle slip control apparatus
AssigneeMazda Motor Corporation
InventorsYasuhiro Harada, Kazutoshi Nobumoto, Eizi Nishimura, Toru Onaka
Life of this patent
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Abstract
The slip control is conducted so as to cause an amount of the slip of the driven wheel to become a target value by controlling the torque to be transmitted to the driven wheel. The target value is altered during the slip control on the basis of a requirement for road holding capabilities of the driven wheel against a road surface.
Claims17
In a vehicle slip control apparatus capable of preventing the driven wheel from slipping excessively on a road surface by controlling a torque transmitted to the driven wheel, the slip control apparatus comprising:
- torque adjusting means for adjusting a torque to be transmitted to the driven wheel;
- slip detecting means for detecting a state of the slip of the driven wheel on a road surface;
- slip controlling means for controlling said torque adjusting means to allow a degree of the slip of the driven wheel to become a predetermined target value in response to an output from said slip detecting means;
- target value altering means for altering said target value during the slip control;
- and
- target value instructing means for instructing a decrease or increase of the target value to said target value altering means in accordance with a requirement for the road holding capability of the driven wheel against the road surface.
A vehicle slip control apparatus adapted to prevent the driven wheel from slipping on pavement to an excessive degree by controlling a torque applied to the driven wheel, comprising:
- torque adjusting means for adjusting the torque applied to the driven wheel;
- first rotational speed detecting means for detecting a first rotational speed of the driven wheel;
- second rotational speed detecting means for detecting a second rotational speed of the undriven wheel;
- slip ratio determining means for determining a slip ratio of the driven wheel by using a difference between the first and second rotational speeds received from said first and second rotational speed detecting means, respectively;
- slip controlling means for controlling said torque adjusting means so as to allow the slip ratio determined by said slip ratio determining means to become a predetermined target value;
- target value altering means for altering said target value while a degree of the slippage is being controlled;
- and
- target value instructing means for instructing a degree of an increase or decrease in the target value to said target value altering means in order to meet a requirement for a grip of the driven wheel against payment.
Dependencies are inferred from the claim text.