Apparatus for distribution of brake force between front and rear axles
First Claim
1. A brake pressure control apparatus for a vehicle having a front axle with two front wheels which exhibit wheel speeds, a rear axle with two rear wheels which exhibit wheel speeds, and a brake at each wheel, said apparatus comprisingmeans for determining the speeds of the front wheels including a faster front wheel,means for determining the speeds of the rear wheels including a slower rear wheel,braking means which produces brake pressure,ABS means comprising ABS inlet valve means and ABS outlet valve means for controlling brake pressure at the brakes of each of said front and rear wheels,means for determining when said ABS means is not operating,means for providing brake pressure directly from said braking means to said brakes at each front wheel and to said brakes at each rear wheel, andmeans for controlling brake pressure to said brakes at each rear wheel so that the slower rear wheel runs slower than the faster front wheel by a given small speed difference Δ
- vs when said ABS means is not operating.
1 Assignment
0 Petitions
Accused Products
Abstract
When braking occurs but the ABS is not in operation, the brakes at the rear wheels are isolated from the master cylinder by a solenoid valve. Brake pressure at the rear wheels is then provided by a pump and regulated so that the slower rear wheel runs slower than the faster front wheel by a given small speed difference.
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Citations
7 Claims
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1. A brake pressure control apparatus for a vehicle having a front axle with two front wheels which exhibit wheel speeds, a rear axle with two rear wheels which exhibit wheel speeds, and a brake at each wheel, said apparatus comprising
means for determining the speeds of the front wheels including a faster front wheel, means for determining the speeds of the rear wheels including a slower rear wheel, braking means which produces brake pressure, ABS means comprising ABS inlet valve means and ABS outlet valve means for controlling brake pressure at the brakes of each of said front and rear wheels, means for determining when said ABS means is not operating, means for providing brake pressure directly from said braking means to said brakes at each front wheel and to said brakes at each rear wheel, and means for controlling brake pressure to said brakes at each rear wheel so that the slower rear wheel runs slower than the faster front wheel by a given small speed difference Δ - vs when said ABS means is not operating.
- View Dependent Claims (2, 3, 4, 5, 6, 7)
Specification