发明名称 |
METHOD FOR DETECTING FLUID LEAKAGE |
摘要 |
A method for detecting fluid leakage from a pressure-decrease valve in a hydraulic brake system having an ABS device including: a shutoff valve for shutting off supply of a working fluid from a fluid-pressure supply source to a brake device provided for a wheel; the pressure-decrease valve for discharging the working fluid from the brake device; a reservoir for storing the working fluid discharged from the pressure-decrease valve; and a return pump for returning the working fluid stored in the reservoir to a portion between the shutoff valve and the fluid-pressure supply source, the method including the steps of: activating the return pump in a state in which the hydraulic brake system is not in ABS operation, and detecting the fluid leakage from the pressure-decrease valve based on a variation in a pressure of the working fluid in the fluid-pressure supply source caused when the return pump is activated. |
申请公布号 |
US2016059839(A1) |
申请公布日期 |
2016.03.03 |
申请号 |
US201514812831 |
申请日期 |
2015.07.29 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA ;ADVICS CO., LTD. |
发明人 |
NANAHARA Masaki;OHKUBO Masayasu;NORO Kazutaka;NINOYU Masaki;OKANO Takahiro |
分类号 |
B60T17/22;G01M3/28 |
主分类号 |
B60T17/22 |
代理机构 |
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代理人 |
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主权项 |
1. A method for detecting fluid leakage from a pressure-decrease valve in a hydraulic brake system having an ABS device including: a shutoff valve for shutting off supply of a working fluid from a fluid-pressure supply source to a brake device provided for a wheel; the pressure-decrease valve for discharging the working fluid from the brake device; a reservoir for storing the working fluid discharged from the pressure-decrease valve; and a return pump for returning the working fluid stored in the reservoir to a portion between the shutoff valve and the fluid-pressure supply source, the method comprising the steps of:
activating the return pump in a state in which the hydraulic brake system is not in ABS operation, and detecting the fluid leakage from the pressure-decrease valve based on a variation in a pressure of the working fluid in the fluid-pressure supply source caused when the return pump is activated. |
地址 |
Toyota-shi JP |