Pneumatic brake booster
AssigneeContinental Teves AG & Co. oHG
InventorJürgen Faller
Life of this patent
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Abstract
In order to realize shortened response and release times in a pneumatic brake booster for a hydraulic motor vehicle brake system, having an operating chamber which is delimited between an operating wall and a rear wall of the booster housing, the rear wall of the booster housing has at least one formation for reducing the minimum volume of the operating chamber.
Claims9
A pneumatic brake booster a hydraulic motor vehicle brake system, having a booster housing and at least one operating wall having an undulating shape which can be displaced to a limited extent in the booster housing along a center axis, the operating wall extending substantially radially with respect to the center axis and comprising a roller diaphragm for sealing against the booster housing and an operating chamber being delimited between the operating wall and a rear wall of the booster housing, there being a vacuum in the operating chamber in a brake-ready, unbraked starting state of the brake booster, and the operating chamber having a minimum volume here, and it being possible for the operating chamber to be connected to a surrounding atmosphere during a braking operation in order to boost the braking force, wherein the rear wall has at least one formation for reducing the minimum volume of the operating chamber by at least 25% relative to a minimum volume of a modified version of the operating chamber, the modified version of the operating chamber comprising one or more modifications to solely make the rear wall a smooth rear wall lacking the at least one formation, the at least one formation formed as an indented portion in the rear wall.
A pneumatic brake booster a hydraulic motor vehicle brake system, having a booster housing and at least one operating wall having an undulating shape which can be displaced to a limited extent in the booster housing along a center axis, the operating wall extending substantially radially with respect to the center axis and comprising a roller diaphragm for sealing against the booster housing and an operating chamber being delimited between the operating wall and a rear wall of the booster housing, there being a vacuum in the operating chamber in a brake-ready, unbraked starting state of the brake booster, and the operating chamber having a minimum volume here, and it being possible for the operating chamber to be connected to a surrounding atmosphere during a braking operation in order to boost the braking force, wherein the rear wall has at least one separate component which, arranged in the operating chamber, is fastened to the rear wall, the at least one separate component configured to reduce the minimum volume of the operating chamber by at least 25% relative to a minimum volume of a modified version of the operating chamber, the modified version of the operating chamber comprising one or more modifications to solely omit the at least one separate component.
Dependencies are inferred from the claim text.