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在进行客车单车制动感度试验时,制动管减压0.039MPa(0.4kgf/cm~2)后单车试验器手把置保压位,测得的制动管的局部减压量不得超过0.0196 MPa(0.2kgf/cm~2)。如何认识及检验单车感度试验时的局部减压量呢?这与三通阀在试验台上进行急制动孔机能试验时的局部减压量及三通阀在车辆运用中的附加局部减压作用是否即一回事?本文力图从三通阀的急制动作用的形成开始,对单车感度试验时局部减压量的形成从理论上加以分析,并对减压量作了粗略计算,认为制动管的局减量控制在0.019MPa(0.2kgf/cm~2)是可行的。而提高三通阀的检修质量.杜绝不正当的检修方式,以保证行车安全,则是本文通过讨论希望达到的目的。
During the brake test of bicycle cycle, the pressure of the brake pipe should be less than 0.0196 (0.4kgf / cm ~ 2) MPa (0.2 kgf / cm ~ 2). How to recognize and test the local decompression amount when the bicycle sensitivity test? This and the three-way valve on the test bench emergency brake function test local pressure relief valve and the three-way valve in the vehicle application of additional local decompression Whether this is the same thing or not? This article tries hard to start from the formation of three-way valve emergency braking, the local sensitivity of the bicycle during the formation of a certain amount of decompression to be analyzed and made a rough calculation of the decompression volume, that It is feasible to control the reduction of brake pipe at 0.019MPa (0.2kgf / cm ~ 2). And improve the quality of three-way valve overhaul to eliminate improper maintenance methods to ensure traffic safety, it is through the discussion of this article hopes to achieve the goal.