三菱4G64型发动机气缸体破裂分析

Analysis for Mitsubishi Model 4G64 Engine Broken Cylinder Block

一辆三菱帕杰罗（Ｐａｊｅｒｏ）越野汽车，在其行驶 ３． ４万 ｋｍ时，发动机缸体被连杆击破。经解体检查，该车发动机的损坏，是因为用户长期不进行保养、维护，没有定期更换发动机机油和机油滤清器，使机油变质，造成第３缸连杆击破缸体的事故。

This article describes the troubles of a Pajero off-road truck engine cylinder block which is broken by the connecting rod after running 34 000 kilometers. After disassembled and inspected, found that the engine damage was caused by the user who did not take care of the engine maintenance for a long time, having no replacement of engine oil in regular time specified, and no replacement of oil filter that caused the oil deterioration, and the event was happened due to cylinder block broken by the connecting rod in the 3rd cylinder.