Device for propulsion control for a motor vehicle with all-wheel

Details Device for propulsion control for a motor vehicle with all-wheel Device for propulsion control for a motor vehicle with all-wheel

1987-04-08

1989-07-18

Lall, Parshotam S.

Boots, shoes, and leggings

36442601, 180197, 303 97, 303100, 361238, B60T 832

Patent

active

048498912

ABSTRACT:
A propulsion control device for a motor vehicle which has a permanently balanced all-wheel drive, wherein the drive slip thresholds at which the control responds in the sense of a braking action, is increased as a function of the velocity and decreased as a function of the transverse acceleration. The acceleration thresholds, at which the control responds, are lowered as a function of the transverse acceleration. In the case of travel in a straight line, the lowest of the wheel peripheral velocities is taken as the reference velocity relative to which the drive slip thresholds are fixed. In the case of travel in a curve, the average of the wheel peripheral velocities of the left-hand side and right-hand side vehicle wheels is taken as the reference velocity for the vehicle wheels on the left-hand side and the right-hand side of the vehicle, respectively. From the time t.sub.0 at which the control at one of the vehicle wheels comes into operation, the velocity of this vehicle wheel is updated in accordance with the expression

REFERENCES:
patent: 3950036 (1976-04-01), Fink et al.
patent: 4484280 (1984-11-01), Brugger et al.
patent: 4589511 (1986-05-01), Leiber
patent: 4715662 (1987-12-01), Van Zanten et al.
patent: 4736994 (1988-04-01), Fennel et al.
patent: 4750125 (1988-06-01), Leppek et al.
patent: 4763262 (1988-08-01), Leiber
patent: 4763263 (1988-08-01), Leiber
patent: 4765430 (1988-08-01), Schulze et al.

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