| 摘要 |
PURPOSE: A break system of car for using front under body impact test is provided to prevent the vehicle from secondly colliding with other structures except a structure used in testing the front under body of a car body, thereby reusing or recycling the vehicle for other tests. CONSTITUTION: A nitrogen tank(11) is connected with a master cylinder(23) of a vehicle to be tested through a pneumatic line(11a). A pneumatic pressure generating pump(12) is installed on the pneumatic pressure line for generating pneumatic pressure by using nitrogen. A solenoid valve(13) is installed on the pneumatic pressure line between the pneumatic pressure generating pump and the master cylinder. A wheel speed sensor(14) detects whether the vehicle travels. An on/off switch(15) is mounted at a front cross member of the vehicle and is operated when the front cross member and a shock frame of a frame support plate contact with each other. A relay(16) receives signals of the on/off switch for selectively opening and shutting the solenoid valve. An ECU(Electric Control Unit)(17) selectively drives the pneumatic pressure generating pump to generate brake force in a brake main body(24).
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