我队一辆CA1091型货车满载驶入成渝公路一个多小时,发动机突发杂异的响声。驾驶员未敢贸然行车,当即采取果断措施,牵引出高速公路畔诊断时,原症状又突然消失,且无怠速,排气管有突突声。 拆检缸盖,一缸活塞顶部有数十个小凹坑,火花塞中心电极与侧电极相触碰。该车平日多为半载和中低速行驶。在高速公路上,当发动机持续高转速,大负荷工况 Our team a CA1091 truck full load into the Chengdu-Chongqing Highway more than an hour, the engine suddenly strange noise. The driver did not dare to rush to traffic, immediately take decisive measures, traction out of the highway diagnosis, the original symptoms suddenly disappear, and no idling, the exhaust pipe has a sudden sound. Disassemble the cylinder head, a cylinder piston top dozens of small pits, spark plug center electrode and the side electrode touch. The car is usually more than half load and low-speed driving. On the highway, when the engine sustained high speed, high load conditions