Brake booster device

Details Brake booster device Brake booster device

1997-11-19

1999-07-06

Lopez, F. Daniel

Power plants

Pressure fluid source and motor

Utilizing lubricant, starter motor, cooling fluid, or fluid...

12333914, F16D 3102

Patent

active

059184620

ABSTRACT:
A brake booster having a body in which a booster pressure sensor for detecting the internal pressure of an atmospheric pressure chamber is provided, and in which the operating state of a brake pedal is detected by a pedal sensor. Further, when the brake pedal is not depressed, the internal pressure of the negative pressure chamber is detected by the booster pressure sensor. In contrast, when the brake pedal is depressed, an atmospheric pressure is detected by the same booster pressure sensor. Namely, when the brake pedal is not depressed, the negative pressure chamber and the atmospheric pressure chamber communicate with each other and are thus shut off from atmospheric air. Therefore, the internal pressure of the negative pressure chamber is detected by the booster pressure sensor which communicates with the atmospheric pressure chamber. Moreover, when the brake pedal is depressed, the atmospheric pressure chamber communicates with atmospheric air. Consequently, an atmospheric pressure is detected by the booster pressure sensor.

REFERENCES:
patent: 4024709 (1977-05-01), Erdmann
patent: 4224791 (1980-09-01), Ostwald
patent: 4633757 (1987-01-01), Kubota
"Automobile Engineering" (Jidosha-Kogaku) May 1996.

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