Torque distribution control system for a four wheel drive vehicle
First Claim
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1. A torque distribution control system for a four wheel drive vehicle comprising:
- a brake means disposed at each of four wheels independently and separately from each other;
a braking pressure adjusting means disposed at each of two groups of the wheels;
a slip value detecting means for detecting a slip value of each wheel with respect to pavement;
a slipping-wheel judging means for judging a slipping wheel which slips in an actual slip value greater than a given target slip value by comparing the actual slip value detected by said slip value detecting means with the target slip value;
a brake control means for operating said brake means against the group of the wheels containing the slipping wheel when the slipping wheel detected by said slipping-wheel judging means is contained only one of the two groups of the wheels; and
an engine control means for operating an engine to increase its output torque in accordance with operation of said brake means when said brake control means is operated.
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Abstract
In a four wheel drive vehicle adapted to drive all of the four wheels, a braking force is applied to the wheel which causes slipping while the output torque of the engine is increased in accordance with brake operation. A braking pressure adjusting unit is preferably provided with each of the four wheels which is arranged so as to separately and individually brake the wheel which slips.
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Citations
19 Claims
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1. A torque distribution control system for a four wheel drive vehicle comprising:
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a brake means disposed at each of four wheels independently and separately from each other; a braking pressure adjusting means disposed at each of two groups of the wheels; a slip value detecting means for detecting a slip value of each wheel with respect to pavement; a slipping-wheel judging means for judging a slipping wheel which slips in an actual slip value greater than a given target slip value by comparing the actual slip value detected by said slip value detecting means with the target slip value; a brake control means for operating said brake means against the group of the wheels containing the slipping wheel when the slipping wheel detected by said slipping-wheel judging means is contained only one of the two groups of the wheels; and an engine control means for operating an engine to increase its output torque in accordance with operation of said brake means when said brake control means is operated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A torque distribution control system for a four wheel drive vehicle comprising:
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a brake means disposed at each of the four wheels independently and separately from each other; a braking pressure adjusting means disposed at each of the four wheels; a slip value detecting means for detecting a slip value of each wheel with respect to pavement; a slipping-wheel judging means for judging a slipping wheel which slips in an actual slip value greater than a given target slip value by comparing the actual slip value detected by said slip value detecting means with the target slip value; a brake control means for operating said brake means against the slipping wheel detected by said slipping-wheel judging means; and an engine control means for operating an engine to increase its output torque in accordance with operation of said brake means when said brake control means is operated. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification