Power train control apparatus
First Claim
1. A power train control apparatus for totally controlling the transmission of engine output torque to vehicle wheels, comprising:
- torque distribution means for independently distributing said engine output torque to each of said wheels with controlling the quantity of torque to be distributed;
slip control means for detecting a slipped state of each of said wheels and controlling the torque distributed to thus detected slipped wheel so as to reduce the slip level below a predetermined level;
determination means for determining whether or not torque, to be transmitted to a wheel which is subjected to the control of said slip control means, is to be increased when said torque distribution means further will act on said wheel; and
torque restricting means, arranged to receive an output from said determination means indicating that torque to be transmitted to said wheel which is subjected to the control of said slip control means is increased, for controlling at least one of said slip control means and said torque distribution means so as to reduce torque to be transmitted to at least said wheel, whereby torque to be transmitted to said wheel is restricted.
1 Assignment
0 Petitions
Accused Products
Abstract
The control apparatus eliminates the adverse effects upon a moving vehicle caused by interference between two control operations taking place at the same time. For example, the control of torque applied to the wheels simultaneously subjected to wheel slip control can cause competing contradictory instructions to be issued to control the rotation of the wheel. When a wheel undergoing slip control is instructed by the torque split control to increase torque, the torque split control is cancelled. When the torque split control decreases the torque applied to a wheel and the wheel continues to slip, the wheel is subjected to slip control and the torque applied is reduced to prevent slip. When a wheel undergoing slip control has increased torque applied, the slip of the wheel is monitored and the torque is reudced to bring the slip below a predetermined limit.
70 Citations
13 Claims
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1. A power train control apparatus for totally controlling the transmission of engine output torque to vehicle wheels, comprising:
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torque distribution means for independently distributing said engine output torque to each of said wheels with controlling the quantity of torque to be distributed; slip control means for detecting a slipped state of each of said wheels and controlling the torque distributed to thus detected slipped wheel so as to reduce the slip level below a predetermined level; determination means for determining whether or not torque, to be transmitted to a wheel which is subjected to the control of said slip control means, is to be increased when said torque distribution means further will act on said wheel; and torque restricting means, arranged to receive an output from said determination means indicating that torque to be transmitted to said wheel which is subjected to the control of said slip control means is increased, for controlling at least one of said slip control means and said torque distribution means so as to reduce torque to be transmitted to at least said wheel, whereby torque to be transmitted to said wheel is restricted. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power train control apparatus for totally controlling a transmission of engine output torque to vehicle wheels, comprising:
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torque distribution means for independently distributing said engine output torque to each of said wheels with controlling the quantity of torque to be distributed; slip control means for controlling slip of said wheels so as to reduce said slip below a predetermined level; first detection means for detecting a wheel which is subjected to a slip control performed by said slip control means; second detection means, arranged to receive an output from said first detection means, for detecting a fact that said slip control is applied to said wheel which is subjected to said slip control when said torque distribution means is being operated; and restricting means, arranged to receive an output from said second detection means, for restricting increase in torque to be applied to said wheel which is subjected to said slip control when torque to be distributed to said wheel which is subjected to said slip control exceeds a predetermined level. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification