Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1989-11-17
1992-06-09
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
188112A, 188112R, 303 7, 303 20, 303 15, B60T 832
Patent
active
051201143
ABSTRACT:
A brake system including an anti-skid apparatus with an electronic control unit for monitoring the grip of the vehicle tires on the road. It is also equipped with a yawing moment attenuator, controlled by the control unit, that in the event of highly varying coefficients of friction prevents an excessively great difference in brake pressure on the two sides of the vehicle. Tractor or towing vehicles driven without the trailer, especially semitrailer trucks, are difficult to control on road surfaces with variable grip, because of the major yawing and steering moments. The tractor or towing vehicle is therefore equipped according to the invention with a trailer detection unit, the signal of which is evaluatable in the control unit and can be fed as a control variable to the yawing moment attenuator. If the truck is driven without a trailer, the yawing moment attenuator can be controlled on the basis of this signal in such a way as to lessen the difference in brake pressure.
REFERENCES:
patent: 3767270 (1973-10-01), Urban
patent: 3804471 (1974-04-01), Fish
patent: 3993362 (1976-11-01), Kamins et al.
patent: 4077675 (1978-03-01), Leiber et al.
patent: 4254998 (1981-03-01), Marshall et al.
patent: 4370715 (1983-01-01), Leiber
patent: 4836616 (1989-06-01), Roper et al.
Kaechele Heinz
Schlichenmaier Andreas
Graham Matthew C.
Greigg Edwin E.
Greigg Ronald E.
Robert & Bosch GmbH
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