FAIL-SAFE SYSTEM FOR BRAKE OF HYBRID ELECTRIC VEHICLE AND METHOD FOR CONTROLLING THE SAME

A fail-safe system for a brake of a hybrid electric vehicle and a control method thereof are provide to improve fail-safe performance by shutting off atmospheric pressure transmitted from an intake to a brake booster and thereby forming forced vacuum pressure. A fail-safe system for a brake of a hyb...

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Bibliographische Detailangaben
1. Verfasser:	RO, KYU SANG
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A fail-safe system for a brake of a hybrid electric vehicle and a control method thereof are provide to improve fail-safe performance by shutting off atmospheric pressure transmitted from an intake to a brake booster and thereby forming forced vacuum pressure. A fail-safe system for a brake of a hybrid electric vehicle comprises as follows. A connection pipe(22) is installed on an intake connection line(14) connected to supply negative pressure to a brake booster(2) from an intake(11). A vacuum supply unit(23) is connected to the connection pipe and supplies vacuum pressure apart from the intake. A first electronic pressure shutoff valve(21) is installed on the intake connection line to shut off a pressure transmitted from the intake. In addition, an electronic control unit(ECU)(20) controls the electronic valve to shut off an atmosphere pressure transmitted from the intake and the vacuum supply unit to supply a vacuum pressure.