供油提前角是指活塞从喷油泵开始原油的瞬间,至活塞到达压缩上止点这一段时间的曲轴转角。不同型号的柴油机有不同的供油提前角。如S195柴油机的供油提前角为15°～18°,X195为18°～20°、165F为21°,170为22°～26°。检查方法是:拆掉喷油器与高压油管的连接,拧松高压油管与喷油泵的连接螺母,将高压油管口扭转朝上,再拧紧连接螺 Fuel supply advance angle is the piston from the fuel pump to start the moment of crude oil to the piston reaches the compression top dead center for a period of time crank angle. Different types of diesel engines have different fuel supply advance angle. Such as S195 diesel engine fuel advance angle of 15 ° ~ 18 °, X195 18 ° ~ 20 °, 165F 21 °, 170 22 ° ~ 26 °. Check the method is: remove the injector and high-pressure tubing connection, loosen the high-pressure tubing and injection pump connection nut, the high-pressure tubing port twisted up, and then tighten the screw