Cause Analysis and Solution of Diesel Engine Flying

The phenomenon of diesel engine flying is the phenomenon that during the operation of the diesel engine, especially in the process of medium and small load operation, the speed of the diesel engine increases sharply for some reason, the overspeed operation cannot be controlled automatically, the exhaust gas emits thick smoke, and the sound and vibration are large.

After the occurrence of "flying", with the increase of the speed of the diesel engine, the leakage between the plunger of the fuel injection pump and the plunger sleeve decreases, and the diesel oil entering the cylinder increases, causing the speed of the diesel engine to increase again, thus forming a vicious circle. The increasing speed of the diesel engine makes the temperature in the cylinder increase continuously, the expansion of the piston increases, the movement of each part of the piston connecting rod group intensifies, and the load increases. Severe accidents such as broken crankshafts and smashed pistons, cylinder liners and heads. Therefore, once the diesel engine "flying", measures must be taken to shorten the "flying" time and reduce losses.