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一汽奥迪100型轿车装用的JW型发动机为四缸四冲程直列化油器式汽油机,不仅动力性、经济性皆佳,而且还具有良好的可靠性和工作稳定性。由于该发动机采用了大量的“低维护技术”,从而减少了维护作业量,降低了维护费用。 1.机体与曲柄连杆机构 (1)气缸盖 JW型发动机气缸盖采用铝合金材料,顶置气门机构,结构较为复杂。 在使用中,气缸盖损伤形式主要包括缸盖的裂纹、磨损和变形。 缸盖裂纹会出现在气门座或气门座圈及火花塞螺纹孔之间。如裂纹宽度最大不超过0.5mm或火花塞螺纹孔虽有裂纹但仍不超过头圈范围,则
The JW engine used in the FAW-100 Audi sedan is a four-cylinder four-stroke inline carburetor, which not only has good power and economy but also has good reliability and working stability. As the engine uses a large number of “low maintenance technology”, thus reducing the maintenance workload and reduce maintenance costs. 1. Body and crank rod mechanism (1) cylinder head JW engine cylinder head aluminum alloy material, the top valve mechanism, the structure is more complex. In use, the cylinder head damage forms mainly include cylinder head cracks, wear and deformation. Cylinder head cracks may occur between the valve seat or valve seat ring and plug threaded hole. If the maximum width of the crack does not exceed 0.5mm or spark plug screw hole cracked but still not exceed the scope of the first ring, then