Detection of vacuum booster leak to atmosphere or booster checkball malfunction

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United States of America Patent

PATENT NO 9393946
APP PUB NO 20150166034A1
SERIAL NO

14561532

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Abstract

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A method of operating a brake system comprises monitoring a vacuum pressure sensor with an ECU to determine an actual vacuum pressure in a vacuum booster for the brake system. The actual vacuum pressure is compared to a modeled vacuum pressure for the vacuum booster. When the actual vacuum pressure is different from the modeled vacuum pressure by a predetermined threshold difference the ECU determines either a booster leak to atmosphere or a booster checkball is malfunctioning. When the ECU determines that the booster is leaking to atmosphere or the booster checkball is malfunctioning an alert is provided.

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Patent Owner(s)

Patent OwnerAddress
CONTINENTAL AUTOMOTIVE SYSTEMS INC1 CONTINENTAL DRIVE AUBURN HILLS MI 48326

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schumann, Clinton Royal Oak, US 7 50

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