我们在巡回检查中发现,不少机手在更换单缸喷油泵柱塞时,只换柱塞副,不换出油阀,机手认为,柱塞是担负供油重任的,承受压力大、磨损快,而出油阀只担任控制回油的任务,磨损轻。因此只换柱塞副,不换出油阀。其实,这种做法是错误的。因为柱塞供油,出油阀控制回油,高压油管传递燃油,喷油器喷油,其动作是协调一 We check in the circuit found that many hand in the replacement of single-cylinder fuel injection pump plunger, only for the vice, do not change the valve, the driver believes that the plunger is responsible for the oil, under pressure, Wear fast, and the oil valve only serve to control the task of oil return, wear light. Therefore, only for the plunger, not for the valve. In fact, this approach is wrong. Because the plunger oil, the valve control back to the oil, high-pressure tubing to pass fuel, injector fuel injection, the action is to coordinate a