故障原因 一辆奥迪100轿车,装有波许K型机械控制汽油喷射系统。发生发动机热车不易启动故障。究其原因,发动机热车启动困难,怠速不良与进入汽缸的可燃混合气过浓有关。混合气过浓的原因:一是空气量太少;二是供油量过多,雾化质量差。 检查与分析 检查附加空气阀,结果表明该阀工作正常,说明空气供给正常。再对喷油器的喷雾质量、喷油嘴的密封性进行检查, Fault reason An Audi 100 sedan, equipped with Bo Xu K-type mechanical control gasoline injection system. Occurrence of engine hot car is not easy to start fault. The reason, the engine hot car starts difficult, poor idle speed and into the cylinder combustible mixture is too thick. Mixed gas too thick reason: First, too little air; Second, excessive fuel supply, poor quality of atomization. Inspection and analysis Check additional air valve, the results show that the valve is working properly, indicating normal air supply. And then on the injector spray quality, nozzle sealing to check,