Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1988-02-26
1989-05-02
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303 96, B60T 862
Patent
active
048262579
ABSTRACT:
An anti-blocking system for a road vehicle having a hydraulic service brake installation constructed as a dual-circuit brake installation with a front axle/rear axle brake circuit distribution which is adjustable to different values m.sub.1 and m.sub.2 of the front axle/rear axle braking force distribution, whereby the one value m.sub.1 corresponds to a braking force distribution optimized in the sense of driving stability and the other value corresponds to a relatively higher value of the rear axle braking force proportion. As long as the regulation is effective only at the rear axle, this anti-blocking system operates according to the principle of keeping a braking slippage .lambda..sub.H occurring in the rear axle brake circuit within the range of values delimited by the relation .lambda..sub.V +.DELTA..lambda..ltoreq..lambda..sub.H .ltoreq..lambda..sub.V +.DELTA..lambda. in relation to a braking slippage .lambda..sub.V occurring in the front axle brake circuit, whereby .DELTA..lambda. designates a permissive slippage differential of about 4% and .DELTA..lambda.'.apprxeq..DELTA..lambda./2. As soon as the anti-blocking regulation is also effective on the front axle, both the latter and the rear axle are regulated according to the principle of keeping both the front axle braking slippage .lambda..sub.V and the rear axle braking slippage .lambda..sub.H within the same range of values delimited by an upper limit of the braking slippage which is compatible with good braking deceleration and equally good driving stability.
REFERENCES:
patent: 4733920 (1988-03-01), Pannbacker
patent: 4738491 (1988-04-01), Sato
patent: 4753493 (1988-06-01), Arikawa
patent: 4759589 (1988-07-01), Leiber
Burckhardt Manfred
Zimmer Richard
Daimler-Benz Aktiengesellschaft
Reger Duane A.
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