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Brake-by-wire system having at least one brake circuit, method for operating brake system, and diagnostic valve for brake system

A brake-by-wire, brake circuit technology, used in brake control systems, control valves, control valves, and bleed valves, etc.

Active Publication Date: 2021-04-02
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this additional valve requires installation space and must be electrically actuated separately

Method used

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  • Brake-by-wire system having at least one brake circuit, method for operating brake system, and diagnostic valve for brake system
  • Brake-by-wire system having at least one brake circuit, method for operating brake system, and diagnostic valve for brake system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028]The brake system includes a brake master cylinder 1, and the piston of the brake master cylinder can be manipulated by the pedal. The reserve container 2 is connected to the brake master, wherein the diagnostic valve 3 is present in the connection between the storage container 2 and the brake master cylinder 1, and the structure of the diagnostic valve will be described in detail below.

[0029]Further, the brake system has an electric drive brake pressure generator 4. The brake pressure generator has a storage chamber 5 that defines the piston 6 of the storage chamber 5 and a drive motor 7 for driving the piston.

[0030]Not only is the master cylinder 1 but also the brake pressure generator 4 is connected to the brake circuit 10 of the quasi-double circuit. The brake circuit is branched into four branch pipes, each of which is connected to the corresponding branch pipe, respectively. Here, the branch line for the front wheel brake and the branch line for the rear wheel brake are s...

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PUM

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Abstract

A motor-operated brake pressure generator (4) is actuated in order to check the functionality / tightness of a brake-by-wire braking system. A pressure medium flows via a main brake cylinder (1) out into a storage container (2). As a result, a diagnosis valve (3) is provided between the main brake cylinder (1) and the storage container (2), and consists of a check valve (20) and a throttle (21) connected in parallel. The pressure medium out-flow is limited by the throttle (21). Because the gradient of the reduction in pressure can be calculated, a measured pressure increase can be compared withthe expected pressure increase, and the functionality / tightness can be deduced from the comparison.

Description

Technical field[0001]The present invention relates to a wire control system having at least one brake circuit, and the line control system has: a brake circuit manipulated by a pedal, a brake circuit is hydraulically connected by a separating valve hydraulic pressure of a normally open (turned on). To the brake master cylinder; an electrically manipulated brake pressure generator, the brake circuit is connected to the brake pressure generator through a brake pressure of normally closed (off when power is turned off); and the reserve container, the reserve container is not only connected To the brake master and connect to the brake pressure generator by the suction valve.Background technique[0002]Such types of brake systems are known, for example, from Patent Document DE 10 13 216 314 A1. When the pedal manipulating the brake master, the normally opened separation valve is turned off and the normally closed valves of the brake pressure generator are opened, wherein the measurement is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/40
CPCB60T8/4081B60T8/341B60T8/90B60T13/142F16K15/18F16K27/00B60T2270/82B60Y2400/81B60T8/326B60T13/62B60T15/028B60T17/221B60T2270/402B60T2270/404B60T2270/406F16K17/00
Inventor R·布里塞维茨J·多尔玛雅
Owner CONTINENTAL AUTOMOTIVE TECH GMBH