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柴油机喷油器的喷油时刻必须有一定的提前量,即喷油正时。柱塞式燃油系统的供油正时是通过检查柱塞泵刚开始供油那一刻到压缩上止点时曲轴转过的角度。PT燃油系统是通过检查活塞离压缩上止点还有5.16 mm (此位置是活塞处于压缩冲程上止点前19°的位置,喷油器柱塞处于被压缩状态)时,喷油器(实际喷油过程为上止点前22.5°至上止点后18°)推杆至升高极限位置(此位置是喷油器柱
Diesel fuel injector injection time must have a certain amount of advance, that is, fuel injection timing. The fueling timing for the plunger fuel system is determined by examining the crankshaft rotation angle at the compression top dead center from the moment the plunger pump begins to supply fuel. The PT fuel system is achieved by checking that the piston is still 5.16 mm from the compression top dead center (where the piston is 19 ° in front of the compression stroke and the injector plunger is in compression), the injector Injection process is 22.5 ° before top dead center to 18 ° after top dead center) The push rod is raised to the limit position (this position is the injector column