CONTROL APPARATUS OF ELECTRIC NEGATIVE PRESSURE PUMP

PROBLEM TO BE SOLVED: 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.SOLUTION: In the control a...

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Bibliographische Detailangaben
Hauptverfasser:	SANDO YASUHIRO, MATSUMOTO SACHIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: 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.SOLUTION: 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).