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12180ZL 型柴油机(以下简称180柴油机)是机车用的高速强化柴油机,缸套穴蚀是目前影响该机型使用寿命的主要问题之一。资阳内燃机车工厂生产的东方红〈5〉型调小内燃机车一般在运用3000余小时后与四方机车车辆工厂生产的东方红〈3〉型内燃机车一般在运行12～20万公里后,柴油机缸套便严重穴蚀。穴蚀位置有明显的规律性,面对柴油机飞轮端,柴油机逆时针方向旋转,穴蚀仅发生在左排的内侧和右排的外侧,而且主要集中在上部距缸套支承端面约60毫米的地方,穴蚀分布面积约在φ40毫米范围内,穴蚀孔洞大而深,直径为φ2～φ5毫米。从柴油机运动学和动力学分析,穴蚀部位正是连杆摆动平面内的主推力侧,而且是在膨胀冲程开始时侧推力作用的位置
12180ZL Diesel Engine (hereinafter referred to as 180 Diesel Engine) is a high-speed enhanced diesel engine used in locomotives. Cylinder liner cavitation is one of the major problems that affect the service life of this model. Dongfanghong Diesel locomotives produced by Ziyang Diesel Locomotive Factory generally use Donghonghong <3> diesel locomotive produced by Sifang Locomotive and Rolling Stock Plant for more than 3,000 hours after running for 200,000 to 200,000 km and diesel engine cylinder Set will be a serious erosion. In the face of the flywheel end of the diesel engine, the diesel engine rotates in the counterclockwise direction, and cavitation occurs only on the inside of the left row and the outer row of the right row, and is mainly concentrated on the upper part about 60 mm from the end surface of the cylinder liner support Where, pitting distribution area of about φ40 mm range, cavitation holes large and deep, diameter φ2 ~ φ5 mm. From diesel kinematics and dynamics analysis, cavitation site is the main thrust side of the connecting rod swing plane, but also in the expansion stroke at the beginning of the side thrust position