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Brake system for motor vehicles and method for operating the brake system

A technology of braking equipment and motor vehicles, applied in the direction of braking action starting device, braking transmission device, hydraulic braking transmission device, etc.

Active Publication Date: 2014-01-01
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is considered disadvantageous in the previously known braking system that, in the event of failure of the control or drive of the electrically controllable pressure supply device, a high brake pedal force has to be applied by the driver in order to achieve a sufficient movement braking deceleration

Method used

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  • Brake system for motor vehicles and method for operating the brake system
  • Brake system for motor vehicles and method for operating the brake system
  • Brake system for motor vehicles and method for operating the brake system

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Embodiment Construction

[0036] figure 1 A first embodiment of the brake system according to the invention is schematically shown in . The brake system basically comprises a hydraulic operating unit 2 that can be operated by means of an operating pedal or brake pedal 1 , a travel simulator or simulation device 3 that interacts with the hydraulic operating unit 2 , and a position corresponding to the hydraulic operating unit 2 . Pressure medium storage container 4 at atmospheric pressure, first electrically controllable pressure supply device 5 , second electrically controllable pressure supply device 49 , electronic control and regulation unit 12 and electrically controllable pressure modulation device 50 .

[0037] The pressure modulation device 50 comprises, for example, for each wheel brake 8 , 9 , 10 , 11 of a motor vehicle (not shown) an inlet valve 6 a - 6 d and an outlet valve 7 a - 7 d which are arranged in pairs They are hydraulically connected together via intermediate connections and to th...

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PUM

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Abstract

The invention relates to a brake system for motor vehicles, comprising a master brake cylinder (2), to each of the two pressure chambers of which a brake circuit (I, II) with wheel brakes (8, 9, 10, 11) can be connected or is connected, an electrically actuatable block valve (23a, 23b) for each brake circuit (I, II) for separating the pressure chamber (17, 18) from the brake circuit, a first electrically controllable pressure supply unit (5), an electrically actuatable sequence valve (26a, 26b) for each brake circuit (I, II) for hydraulically connecting the first pressure supply unit (5) to the brake circuit, and a simulation unit (3) which can be hydraulically connected to at least one pressure chamber (17) of the master brake cylinder (2) by means of a simulator release valve (32), wherein a second electrically controllable pressure supply unit (49, 149) having at least one intake port and a pressure port is provided, the intake port of which is connected or can be connected to one of the pressure chambers (17, 18) and the pressure port of which can be connected or is connected to the brake circuit (I, II) associated with the pressure chamber. The invention further relates to a method for operating a brake system.

Description

technical field [0001] The invention relates to a brake system for a motor vehicle according to the preamble of claim 1 and to a method for operating such a brake system. Background technique [0002] Hydraulic vehicle braking systems are known which are designed as external braking systems and in addition to a muscularly actuated main brake which is hydraulically connected to the wheel brakes and provides pressure and volume for actuating the wheel brakes In addition to the cylinders, further electrically controllable pressure and volume supply devices are included, which actuate the wheel brakes in the "brake-by-wire" operating mode. In the event of failure of the electrically controllable pressure and volume supply device, the wheel brakes are actuated solely by the muscular force of the driver of the vehicle (non-reinforced backup mode of operation). [0003] An electrohydraulic brake system is known from WO 2011 / 029812 A1 with a brake pedal actuatable master brake cyli...

Claims

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Application Information

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IPC IPC(8): B60T8/40B60T8/44
CPCB60T8/4081B60T8/442B60T13/745B60T13/686B60T8/4072B60T7/042B60T7/12B60T13/161B60T13/62B60T8/40B60T8/44B60W10/18B60T11/16B60T11/232B60T7/06
Inventor H-J·法伊格尔H·比勒
Owner CONTINENTAL AUTOMOTIVE TECH GMBH
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