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Patent Searching and Data


Title:
BRAKE CIRCUIT LEAK DETECTION AND ISOLATION
Document Type and Number:
WIPO Patent Application WO/2018/083686
Kind Code:
A3
Abstract:
A method for detecting the location of and isolating a leak in a braking system by simultaneously controlling a direct apply subsystem (DAS) and an isolated apply subsystem (IAS) to enable fluid communication between the IAS and the first circuit; to block fluid communication of the DAS with the first circuit; to enable fluid communication of the DAS with the second circuit; and to block fluid communication of the IAS with the second circuit. A sensed travel of an isolated apply component and a sensed fluid pressure developed by the IAS may be used to determine if the leak is present in the first circuit, while simultaneously using the sensed travel of a direct apply component of the DAS, and a sensed fluid pressure developed by the DAS, to determine if the leak is present in the second circuit.

Inventors:
SPIEKER, Arnold H. (4422 Marcello Drive, Commerce Township, Michigan, 48382, US)
Application Number:
IB2017/058322
Publication Date:
June 14, 2018
Filing Date:
December 21, 2017
Export Citation:
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Assignee:
AUTOLIV ASP, INC. (3350 Airport Road, Ogden, Utah, 84405, US)
International Classes:
B25B25/00; B60T8/00; B60T17/22; G01L5/28; G01M3/02; G01M3/04; G01M3/28
Foreign References:
US8894159B22014-11-25
US8851579B22014-10-07
US20060043790A12006-03-02
Attorney, Agent or Firm:
OLSON, Stephen T. (HARNESS, DICKEY & PIERCE P.L.C.,,5445 Corporate Drive,Suite 20, Troy Michigan, 48098, US)
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