To provide a control apparatus of an electric negative pressure pump stably supplying negative pressure by driving the electric negative pressure pump for a necessary minimum time, while elongating a service life of the electric negative pressure pump.
In the control apparatus (controller 10) of the electric negative pressure pump 8 of a vehicle provided with the electric negative pressure pump 8 supplying negative pressure to a brake booster 4, a negative pressure sensor 15 detecting the negative pressure supplied to the brake booster 4 by the electric negative pressure pump 8, and a brake lamp switch 16 detecting ON/OFF of the brake operation, the controller drives the electric negative pressure pump 8 for a prescribed time when the brake lamp switch 16 outputs an ON-signal in case of failure of the negative pressure sensor 15, and changes the prescribed time of driving the electric negative pressure pump 8 according to the frequency of the brake operation or a vehicle state (speed reduction or inclination angle).
SANDO YASUHIRO
JPH08295230A | 1996-11-12 | |||
JP2010162914A | 2010-07-29 | |||
JPH05338528A | 1993-12-21 | |||
JP2005186928A | 2005-07-14 |