Hydraulic trailer brake system
First Claim
1. A hydraulic trailer brake system comprisinga device for braking wheels of a trailer;
- a controllable pressure generator for wheel-individual or axle-individual activation of wheel brakes;
a hydraulic brake force transmission device assigned to the device and connected to the wheel brakes via brake lines, the brake force transmission device including a reservoir for a pressure medium and a brake master cylinder;
an electronic control unit or a regulation unit which receives energy via a supply unit,wherein at least two wheel brakes are connected to the brake master cylinder via a first isolating valve arranged in the brake lines and via a first changeover valve, in that the wheel brakes are assigned at least one first inlet and one first outlet valve,a first electrically activatable pressure medium pump provided in a bypass line, downstream of the first changeover valve and the first isolating valve,the suction side of the electrically activatable pressure medium pump connected to the first changeover valve, to at least one first outlet valve and to a first low-pressure accumulator, andthe delivery side of the first electrically activatable pressure medium pump connected to the first isolating valve and to at least one first inlet valve, anda stabilizing coupling connected via a second pressure medium pump to actuators which can vary a tension force of the stabilizing coupling between the trailer and a traction vehicle when the pressure medium pump conveys pressure medium out of the reservoir and into or out of the actuators.
1 Assignment
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Accused Products
Abstract
A trailer device for driving stabilization of vehicle combinations is provided. In order to design a device for driving stabilization of passenger vehicle trailers in a cost-effective and simple manner, a brake system for braking the trailer by an overrun brake and for stability regulation is designed so as to have separating valves, switching valves, inlet and outlet valves and a pressure build-up pump. A stabilizing coupling is also connected by means of a second pressure medium pump to actuators which can vary the clamping force of the stabilizing coupling between the trailer and tractor vehicle if the second pressure medium pump conveys pressure medium from the storage tank into or out of the actuators.
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Citations
29 Claims
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1. A hydraulic trailer brake system comprising
a device for braking wheels of a trailer; -
a controllable pressure generator for wheel-individual or axle-individual activation of wheel brakes; a hydraulic brake force transmission device assigned to the device and connected to the wheel brakes via brake lines, the brake force transmission device including a reservoir for a pressure medium and a brake master cylinder; an electronic control unit or a regulation unit which receives energy via a supply unit, wherein at least two wheel brakes are connected to the brake master cylinder via a first isolating valve arranged in the brake lines and via a first changeover valve, in that the wheel brakes are assigned at least one first inlet and one first outlet valve, a first electrically activatable pressure medium pump provided in a bypass line, downstream of the first changeover valve and the first isolating valve, the suction side of the electrically activatable pressure medium pump connected to the first changeover valve, to at least one first outlet valve and to a first low-pressure accumulator, and the delivery side of the first electrically activatable pressure medium pump connected to the first isolating valve and to at least one first inlet valve, and a stabilizing coupling connected via a second pressure medium pump to actuators which can vary a tension force of the stabilizing coupling between the trailer and a traction vehicle when the pressure medium pump conveys pressure medium out of the reservoir and into or out of the actuators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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- 13. The hydraulic trailer brake system as claimed in 1, wherein the reservoir is connected to a second pressure line in which a second isolating valve is connected via a pressure subline to the actuators of the stabilizing coupling, the pressure line being connected via a line to a suction side of the second pump.
Specification