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辽河—120拖拉机 S195柴油机 BF 1Ⅰ80Z11型单体泵出油阀紧座与喷油泵上体座孔之间没有橡胶密封圈,它的低压密封是靠安装在出油阀座与出油阀紧座之间的出油阀密封垫圈来完成的。一方面,垫圈上、下两表面分别与出油阀紧座、出油阀座接触,防止高压油流出,起高压密封作用;另一方面,垫圈外圆表面与喷油泵上体座孔表面接触,防止由喷油泵油道来的燃油通过柱塞套与喷
Liaohe -120 tractor S195 diesel engine BF 1 Ⅰ 80Z11-type single-pump discharge valve seat and injection pump seat hole between the rubber ring does not have its low-pressure seal is installed in the valve seat and the valve seat Between the oil valve sealing gasket to complete. On the one hand, the upper and lower surfaces of the washer are respectively in tight contact with the outlet valve and the outlet valve seat to prevent the high-pressure oil from flowing out and act as a high-pressure seal; on the other hand, the outer surface of the gasket contacts the surface of the upper seat hole of the injection pump , To prevent the fuel from the fuel injection pump to pass through the plunger sleeve and spray