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挂车上的制动系统用于使行驶的挂车与拖车头(主车)同时减速或停止。重型挂车制动系统的设计必须满足工作可靠、制动性能良好、在发生非常情况下(如自动脱挂、充气管路爆裂时)能自动制动、对于全挂车其制动系统还必须满足主车与挂车制动同步,或使挂车比主车提前(0～0.3秒)发生制动,以防止挂车撞击主车及挂车甩尾事故的发生。为了满足上述要求,过去(1979年前)制动系统曾设计成图1方式,一般可称之为
The braking system on the trailer is used to decelerate or stop the traveling trailer and the trailer head (main vehicle) at the same time. Heavy trailer braking system design must meet the reliable work, braking performance is good, in exceptional circumstances (such as automatic off, inflatable pipeline burst) can automatically brake, the trailer for the trailer system must also meet the Lord Braking synchronization of the car and the trailer, or the trailer ahead of the host car (0 ~ 0.3 seconds) brake to prevent the trailer hit the main car and trailer tail drift accident occurred. In order to meet the above requirements, the past (before 1979) brake system has been designed into Figure 1 way, generally referred to as