一般车辆上有些部件设有与大气相通的通气孔,其目的是为了防止密封空间的流体发生变化时产生压力差而影响其正常工作性能。各个装在通气孔上的通气阀结构和形状虽有差异,但其作用原理基本相同。阀在使用中容易被油垢泥污堵塞,若不及时清洗疏通,就会造成人为故障。常见东风汽车上的通气阀有: 1.发动机曲轴箱通风单各阀(见图1) 其作用是不断更新箱内空气,保护机油品质,还降低 Some vehicles in general have vents connected with the atmosphere, the purpose is to prevent the sealed space fluid changes occur when the pressure difference and affect their normal working performance. Each vent mounted on the vent valve structure and shape although different, but its role is basically the same principle. Valve is easy to be clogged with oil dirt and mud in use, if not cleaned in time to clear, it will cause human failure. Common Dongfeng vent valves are: 1. Engine crankcase ventilation single valve (see Figure 1) its role is to continuously update the air inside the box to protect the quality of the oil, but also to reduce