Patent ID: 7309111
Filing Date: 2007-12-18
Classification: B60T

Abstract:
1. A pressure-medium-actuated brake system of a tractor-trailer combination, having at least a first brake circuit and a second brake circuit, and comprising: a) a multiple-circuit braking power sensor connected to a first compressed-air reservoir for the first brake circuit and to a second compressed-air reservoir for the second brake circuit, the multiple-circuit braking power sensor generating, as a function of a driver's desire, at least a first pneumatic control signal assigned to the first brake circuit, at least a second pneumatic control signal assigned to the second brake circuit, as well as electric signals, b) an electronic controlling and regulating unit by which electric control signals can be generated as a function of the electric signals of the multiple-circuit braking power sensor, c) a control valve device which is controllable with a first priority as a function of the electric control signals of the controlling and regulating unit and with a second priority as a function of at least one of the first pneumatic control signal and the second pneumatic control signal for generating a modulated control pressure, d) a tractor protection valve which is connectable with at least one of said first and second compressed-air reservoirs and, by which, a supply pressure and, as a function of the modulated control pressure, also a brake pressure can be modulated for a brake system of the trailer, e) wherein at least the multiple-circuit braking power sensor and the control valve device are arranged in a direct vicinity of one another and are combined into a constructional unit; and wherein a first shuttle valve and a second shuttle valve are provided, the first shuttle valve switching a larger one of the supply pressures of the first and second compressed-air reservoirs, which are present at its inputs, through to a supply pressure input of the control valve device, and the second shuttle valve switching the control signal with the larger pressure of the first and second pneumatic control signals, which are present at its inputs, through to a control pressure input of the control valve device.