The invention discloses a brake assisting safety auxiliary system. The system comprises a vacuum pressure accumulator, a vacuum pressure accumulating control device and a normally-closed solenoid valve. A pressure sensor is arranged on the vacuum pressure accumulator, is connected with an ECU of a vehicle, and is used for collecting negative pressure signals in the vacuum pressure accumulator and transmitting the negative pressure signals to the ECU; and the vacuum pressure accumulating control device is connected between an engine of the vehicle and the vacuum pressure accumulator and is connected with the ECU. When the negative pressure in the vacuum pressure accumulator is lower than a preset value, the vacuum pressure accumulating control device enables the engine to bring in air from the vacuum pressure accumulator for increasing negative pressure in the vacuum pressure accumulator. The normally-closed solenoid valve is connected between the vacuum pressure accumulator and a brake assisting pump of the vehicle and is connected with the ECU. When the rotating speed of the engine is zero, the normally-closed solenoid valve is opened by ECU so as to enable vacuum gas in the vacuum pressure accumulator to enter the brake assisting pump. According to the safety auxiliary system, after the engine shuts down, the vehicle can be normally braked.
Brake assisting safety auxiliary system
2015-07-08
Patent
Elektronische Ressource
Englisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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