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Brake system having a pressure model and prioritization device

A brake system and pressure model technology, applied in the direction of brakes, transportation and packaging, brake transmission, etc., can solve the problems of no pressure formation, long braking stroke, pressure increase, etc., to save pressure sensors and improve pressure The effect of adjusting precision

Inactive Publication Date: 2012-10-24
IPGATE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Furthermore, simultaneous pressure buildup is not provided in EP06724475
This results in a possible pressure increase not being able to be carried out in a short time, which can result in longer braking travel

Method used

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  • Brake system having a pressure model and prioritization device
  • Brake system having a pressure model and prioritization device
  • Brake system having a pressure model and prioritization device

Examples

Experimental program
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Embodiment Construction

[0034] figure 1 The basic structure of the brake system according to the invention is shown, which consists of a brake master cylinder or tandem brake master cylinder 14, an EC motor 10, a shaft 11 for driving a push rod piston, a shaft reset 12 and a An angle sensor 13 for determining the piston position and for detecting the rotor position or the piston travel.

[0035] If the piston receives an actuating command for forming a defined pressure, a corresponding piston movement takes place via the position sensor 13 and the pressure sensor 19 in the pushrod circuit via the pressure-volume characteristic curve previously obtained and stored in the characteristic curve map. . In the case of subsequent brief constant pressures, which usually occur during braking, a correlative comparison with stored characteristic curve data is carried out on the basis of the new measured data. In the event of deviations, the pressure-volume characteristic curves of each wheel brake are recorde...

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PUM

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Abstract

The invention relates to a brake system comprising a brake booster, the piston-cylinder system (14, HZ, THZ) of which is driven mechanically or hydraulically by an electric motor, in particular by means of transmission means, at least one working chamber of the piston-cylinder system (14, HZ, THZ) being connected to at least two wheel brakes via hydraulic lines, each wheel brake being associated with a 2 / 2 distribution control valve (17a, 17b, 17c, 17d) and the hydraulic connecting lines between the wheels brakes (18a, 18b, 18c, 18d) and the piston-cylinder system (14, HZ) being selectively disconnectable or jointly closable by means of the 2 / 2 distribution control valves (17a, 17b, 17c, 17d) such that in the wheel brakes (18a, 18b, 18c, 18d) a pressure can be adjusted consecutively in terms of a multiplex method and / or simultaneously, the electric motor and the control valves (17a, 17b, 17c, 17d) being actuated by a regulating device, characterized in that the regulating device calculates the respective pressure ( pR(t) ) in the wheel brakes by means of a pressure model (103) and transmits the calculated pressure values ( pR(t) ) to at least one ABS-ESP regulator (104) and to a pressure regulating device (106), wherein the pressure regulating device (106) actuates at least the 2 / 2 distribution control valves (17a, 17b, 17c, 17d) and the electric motor, and a prioritization device (105) performs a wheel selection on the basis of the data transmitted by the ABS / ESP regulator (104) and transmits it to the pressure regulating device (106).

Description

technical field [0001] The invention relates to a brake system according to the preamble of claim 1 . Background technique [0002] In ABS (Antilock Braking System) / ESP (Electronic Stability System), the dynamics and precision of the pressure change determine the quality of regulation and thus the braking travel and stability of the vehicle. Important for good regulation is a fast and fine pressure regulation. Except for the electromechanical brake EMB, the entire hydraulic system works by means of a 2 / 2-way solenoid valve. For this purpose, the second edition of the Brakes Handbook with bibliographical notes, published 2004, pages 114-119 provide detailed basic information. Without special measures, the valve has a purely digital switching behavior, ie the valve is either open or closed (on / off). As a result of the rapid closing, pressure fluctuations with large amplitudes result, which affect the behavior of the wheel and in particular cause noise. In this case, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74B60T8/40
CPCB60T13/745B60T8/4077B60T8/40B60T13/74
Inventor 海因茨·莱贝尔克里斯蒂安·克格尔施佩格安东·万赞滕
Owner IPGATE
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