System for controlling a vehicle driving downhill
First Claim
1. A system for a hill descent control (HDC) in the braking equipment of a motor vehicle comprising:
- an electrically controllable service brake system that includes a brake regulator arranged to provide an output signal;
a brake actuator connected to the brake regulator and that receives the brake regulator output signal, the brake actuator permitting individual adjustment of at least one of the braking pressures (p_RAD,i) and braking moments generated for the individual wheels (i) of a motor vehicle, which are respective manipulated variables controlled by the hill descent control (HDC);
an electronic control unit which at least one of directly and indirectly detects variables related to operating conditions of the motor vehicle; and
a downhill momentum compensation circuit which superimposes a corrective signal a_N, which is determined by the downhill momentum compensation circuit according to at least one of the current incline and from the actual incline of the slope a_NEIGUNG which is driven on, onto the output signal of the brake regulator a_R,wherein the output signal of the brake regulator a_R and the corrective signal a_N are measured as deceleration, and the deceleration demanded by the brake actuator is increased when the incline a_NEIGUNG increases.
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Accused Products
Abstract
A system for a hill descent control in the braking equipment of a motor vehicle comprising an electrically controllable service brake system, which is designed both for an anti-locking control function and for a braking function irrespective of actuation by the driver, a brake actuator which permits an individual adjustment of the braking pressures or braking moments generated for the individual wheels of a motor vehicle, which are the respective manipulated variables controlled by the hill descent control, an electronic control unit being provided for the electronic control and/or regulation which directly or indirectly detects variables related to operating conditions of the motor vehicle and adjusts additional braking moments when driving on steeply inclined roads, irrespective of whether a brake pedal is actuated.
8 Citations
29 Claims
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1. A system for a hill descent control (HDC) in the braking equipment of a motor vehicle comprising:
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an electrically controllable service brake system that includes a brake regulator arranged to provide an output signal; a brake actuator connected to the brake regulator and that receives the brake regulator output signal, the brake actuator permitting individual adjustment of at least one of the braking pressures (p_RAD,i) and braking moments generated for the individual wheels (i) of a motor vehicle, which are respective manipulated variables controlled by the hill descent control (HDC); an electronic control unit which at least one of directly and indirectly detects variables related to operating conditions of the motor vehicle; and a downhill momentum compensation circuit which superimposes a corrective signal a_N, which is determined by the downhill momentum compensation circuit according to at least one of the current incline and from the actual incline of the slope a_NEIGUNG which is driven on, onto the output signal of the brake regulator a_R, wherein the output signal of the brake regulator a_R and the corrective signal a_N are measured as deceleration, and the deceleration demanded by the brake actuator is increased when the incline a_NEIGUNG increases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification