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1.装配间隙增加间隙的目的是为了减少机械损失,提高机械效率,但不能降低使用寿命。 2.控制压缩比 (1)控制气门下陷量在1.4～1.6毫米,极限为2.5毫米,否则,要更换新气门或镶配气门座圈。 (2)活塞位于上止点时,其顶平面应凸出缸体上平面0.50～0.79毫米,若凸出量小于0.3毫米,应及时修复。 (3)活塞在气缸中不得有偏缸现象。 (4)进气管道、气门镶圈不能错位;空气滤清器,消声器要畅通无阻。 (5)安装镶块时,要注意起动孔中心与主喷孔对称中心的连线,应偏向进气孔2°18′。这样有利于柴油机起动和充分燃烧。 (6)喷油器的回油应进入空气滤清器。 (7)在机油泵与主轴承处测柴油压力为0.029～
1. Assembly gap The purpose of increasing the gap is to reduce the mechanical loss, improve the mechanical efficiency, but can not reduce the service life. 2. Control of compression ratio (1) control valve sag in the 1.4 ~ 1.6 mm, the limit of 2.5 mm, otherwise, to replace the new valve or with valve seat. (2) When the piston is at the top dead center, the top plane of the piston should protrude from 0.50 to 0.79 mm on the upper plane of the cylinder. If the protrusion is less than 0.3 mm, it should be promptly repaired. (3) Pistons in the cylinder may not bias cylinder phenomenon. (4) Intake pipe, valve alignment can not be dislocation; air filter, muffler to be smooth. (5) When installing the insert, pay attention to the connection between the center of the starting hole and the symmetrical center of the main spray hole, and should be biased towards the air intake hole 2 ° 18 ’. This is good for diesel starting and full combustion. (6) Injector oil return should enter the air filter. (7) at the oil pump and the main bearing diesel pressure measured at 0.029 ~