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Attenuator for a vehicle braking system

A vehicle braking and attenuator technology, applied in the direction of brakes, automatic starting devices, pump/compressor arrangement, etc., can solve problems such as increasing manufacturing cost, reducing pump service life, and increasing vehicle power system load.

Active Publication Date: 2015-07-22
KELSEY HAYES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manufacturing cost of vehicle braking systems increases with higher pumping capacity, which prevents the use of driver assistance functions in less cost-effective vehicles
Additionally, throttling valves can significantly reduce pump life or disproportionately increase the load on the vehicle's electrical system through higher motor currents

Method used

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  • Attenuator for a vehicle braking system
  • Attenuator for a vehicle braking system
  • Attenuator for a vehicle braking system

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] exist figure 1 A hydraulic vehicle braking system is indicated generally at 10 in . The illustrated embodiment of the vehicle braking system 10 includes the valves and other components described below to provide electronic stability control (ESC) capability. The vehicle braking system 10 includes a slip control system operable in an ESC mode to automatically Brakes are applied selectively and selectively. The vehicle braking system 10 will be exemplary, and it will be appreciated that other brake control system configurations may be used to implement the various valve embodiments described herein. In other embodiments, the vehicle braking system 10 may include components to provide anti-lock braking functions, traction control functions, and / or vehicle stability control functions.

[0026] The slip control system can also operate in an adaptive cruise control (ACC) mode to automatically apply the brakes to slow the vehicle in response to a control signal, such as fi...

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PUM

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Abstract

A vehicle braking system includes a slip control system operable in an electronic stability control (ESC) mode to automatically and selectively apply the brakes in an attempt to stabilize the vehicle when an instability condition has been sensed. The slip control system is further operable in an adaptive cruise control (ACC) mode to automatically apply the brakes to slow the vehicle in response to a control signal. The slip control system includes a variable speed motor drive piston pump for supplying pressurized fluid pressure to the brakes through a valve arrangement. In the ESC mode, the pump motor operates in an ESC speed range, and in the ACC mode, the pump motor operates in an ACC speed range lower than the ESC speed range. The slip control system further includes an attenuator connected to a pump outlet for dampening pump output pressure pulses prior to application to the brakes. The attenuator includes an elastomeric member located in an attenuator chamber of a housing. The attenuator chamber defines a shoulder and the elastomeric member includes a flange which rests on the shoulder and locates the elastomeric member in a predetermined axial position within the attenuator chamber. An outside wall of the elastomeric member includes circumferentially extending grooves defining ribs between adjacent grooves.

Description

[0001] Inventors: J. F. Zeli, B. Ganzel, T. Wald, R. A. Swarich, R. I. Grigin, J. A. Starr, D. Lowe Pace Lareggie. [0002] Cross References to Related Applications [0003] This application claims priority to US Provisional Application No. 61 / 236,232, filed August 24, 2009, and US Provisional Application No. 61 / 314,767, filed March 17, 2010. technical field [0004] Various embodiments of attenuators are described herein. In particular, embodiments described herein relate to an improved attenuator for use in a vehicle braking system and a vehicle braking system equipped with the same. Background technique [0005] Since the introduction of driver assistance functions such as Vehicle Stability Control (VSC), devices for automatically generating brake pressure have become part of the state of the art and are built into vehicles during series production. Automatically generating brake pressure can brake individual or all wheels of the vehicle independently of the driver act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/1755B60T8/40B60T8/42B60T17/02
CPCB60T8/4291B60T8/368B60T8/4872B60T8/4068B60T7/22B60T8/1755B60T2201/02B60T8/40B60T8/42B60T17/02
Inventor J·F·泽利B·甘泽尔T·沃尔德R·A·斯沃里奇R·I·格里金J·A·斯塔尔D·洛佩斯-拉雷吉
Owner KELSEY HAYES CO