| 摘要 |
A hydraulic brake booster is disclosed which provides a power assist to the vehicle operator during a brake application. Pressurized hydraulic fluid is supplied to the booster from the vehicle's power steering pump. A charging valve carried in the booster housing permits flow of fluid into an accumulator when the fluid pressure level at the booster inlet exceeds the fluid pressure level in the accumulator. When flow of fluid to the inlet is terminated the charging valve is opened during a brake application to permit flow of fluid from the accumulator to the booster thereby allowing normal operation of the booster for a limited number of brake applications.
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