Remotely located brake booster

Abstract

A remotely located brake booster for supplying an input force to a pressurizing device to develop pressurized fluid to effect a brake application. The brake booster responds to an actuation signal in the form of pressurized fluid being communicated from a control apparatus activated by an operator. The brake booster has a housing with a bore and a piston located therein to define an operational chamber. The housing has an inlet port through which pressurized fluid from the control apparatus is receiving by the operational chamber. The piston moves from a rest position to an actuation position in response to pressurized fluid being received in the operational chamber to produce the input force for operating the pressurizing device. The brake booster is characterized by an outlet port located in the housing for connecting the operational chamber with a reservoir to allow pressurized fluid to directly flow from the control apparatus to a reservoir by way of the operational chamber to modify the temperature of fluid therein to maintain the viscosity of the fluid at a level sufficient for the piston to return from an actuation position to the rest position within a desired time period and to remove any contamination, including air, that may be present in the operational chamber.