Slip control system for vehicle
First Claim
1. A total slip control system for a vehicle having an engine and a brake for a driving wheel comprisinga driving force control means which controls the driving force of the driving wheel,a brake control means which controls the brake for the driving wheel, anda control unit which, when the driving slip ratio of the driving wheel exceeds a predetermined driving slip ratio, causes the driving force control means to control the driving force of the driving wheel so that the driving slip ratio of the driving wheel converges on a target driving slip ratio, thereby effecting traction control, and, when the braking slip ratio of the driving wheel exceeds a predetermined braking slip ratio, causes the brake control means to apply the brake to the driving wheel and to control the braking pressure so that the braking slip ratio of the driving wheel converges on a target braking slip ratio, thereby effecting anti-skid control,wherein the improvement comprises thatsaid control unit does not initiate the traction control until the anti-skid control is ended when the driving slip ratio of the driving wheel exceeds said predetermined driving slip ratio during the anti-skid control in a high vehicle speed range not lower than a predetermined speed and said control unit initiates the traction control with the anti-skid control continued when the driving slip ratio of the driving wheel exceeds said predetermined driving slip ratio during the anti-skid control in the low vehicle speed range lower than the predetermined speed.
1 Assignment
0 Petitions
Accused Products
Abstract
A total slip control system for a vehicle effects both the traction control and the anti-skid control. The traction control is effected by control of the engine output torque and application of brake to the driving wheel. The traction control is not initiated until the anti-skid control is ended when the traction control initiating condition is satisfied during the anti-skid control in a high vehicle speed range not lower than a predetermined speed, while the traction control is initiated with the anti-skid control continued when the traction control initiating condition is satisfied during the anti-skid control in the low vehicle speed range lower than the predetermined speed.
33 Citations
7 Claims
-
1. A total slip control system for a vehicle having an engine and a brake for a driving wheel comprising
a driving force control means which controls the driving force of the driving wheel, a brake control means which controls the brake for the driving wheel, and a control unit which, when the driving slip ratio of the driving wheel exceeds a predetermined driving slip ratio, causes the driving force control means to control the driving force of the driving wheel so that the driving slip ratio of the driving wheel converges on a target driving slip ratio, thereby effecting traction control, and, when the braking slip ratio of the driving wheel exceeds a predetermined braking slip ratio, causes the brake control means to apply the brake to the driving wheel and to control the braking pressure so that the braking slip ratio of the driving wheel converges on a target braking slip ratio, thereby effecting anti-skid control, wherein the improvement comprises that said control unit does not initiate the traction control until the anti-skid control is ended when the driving slip ratio of the driving wheel exceeds said predetermined driving slip ratio during the anti-skid control in a high vehicle speed range not lower than a predetermined speed and said control unit initiates the traction control with the anti-skid control continued when the driving slip ratio of the driving wheel exceeds said predetermined driving slip ratio during the anti-skid control in the low vehicle speed range lower than the predetermined speed.
Specification