The invention relates to a brake servo having a boost function a pressure sensor (103) for detecting the pressure of the master cylinder (102), a current source (104) for supplying the solenoid (50), a pressure-increase control function. The solenoid curre...

Braking assistance servomotor including braking control rod (1), a brake assistance control device (2) actuated by the control rod and control rod position Foucalt current sensor (4,6). Sensor is mounted on brake assistance device (2). Has an electric cont...

An apparatus and method for controlling a negative pressure in an internal combustion engine (10) equipped with a brake booster (18) that uses a negative pressure produced on a downstream side of a throttle valve (36) provided in an intake passage (34) of ...

A direct injection engine (10) is coupled to a vacuum brake booster (130) wherein vacuum created from engine pumping is used to supplement driver braking force. The brake booster is coupled through a check valve (134) to the engine intake manifold (44). A ...

A direct injection engine (10) is coupled to a vacuum brake booster (130) wherein vacuum created from engine pumping is used to supplement driver braking force. The brake booster (130) is coupled through a check valve (134) to the engine intake manifold (4...

An internal combustion engine is provided with a variable valve train (30, 31) capable of altering opening and closing timings and/or opening amounts of at least one of an intake valve (28) and an exhaust valve (29) of an internal combustion engine. The in...