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Title:
CONTROL APPARATUS OF ELECTRIC NEGATIVE PRESSURE PUMP
Document Type and Number:
Japanese Patent JP2012144182
Kind Code:
A
Abstract:

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).


Inventors:
MATSUMOTO SACHIHIRO
SANDO YASUHIRO
Application Number:
JP2011005049A
Publication Date:
August 02, 2012
Filing Date:
January 13, 2011
Export Citation:
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Assignee:
SUZUKI MOTOR CORP
International Classes:
B60T17/02; B60T17/00
Domestic Patent References:
JPH08295230A1996-11-12
JP2010162914A2010-07-29
JPH05338528A1993-12-21
JP2005186928A2005-07-14
Attorney, Agent or Firm:
Ryoichi Yamashita