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The so-called diesel generator set speed is the loss of control of the speed of the diesel engine, greatly exceeding the specified maximum speed. The main basis for judging the genset's coaster is the change of the sound when the diesel engine is working; with the increase of the rotation speed, the sound (especially the exhaust sound) emitted by the diesel engine becomes denser and even becomes whistling. The phenomenon of rapidity occurs suddenly and it will cause serious harm in a very short time. The main reason for this phenomenon is to analyze the supply system of kerosene. Too much oil supply and the governor high-speed limit screw change will cause a sharp rise in the speed. The following is a brief introduction to the causes of the accidents of the diesel generators and their handling methods.
Cause one: Fuel Supply System Failure
(1) The flyweights of the governor fall off, the spring breaks are adjusted, and the high-speed limit screw is changed.
(2) The rack of the fuel injection pump is stuck at the maximum fuel supply position, the rack and the tie rod are loosely connected, and the meshing position of the rack and the gear is wrong.
Cause two: The combustion chamber enters a large amount of oil
(1) Too much oil in the sump.
(2) The piston, piston ring, and cylinder liner wear badly, the oil ring is installed wrongly, and a large amount of oil enters the combustion chamber.
When encountering a speeding vehicle, emergency measures should be taken to try to stop the diesel engine quickly. Emergency shutdown methods include:
The first is to cut off the oil circuit, which is to pull the throttle to the stop position and turn off the throttle switch. However, most of the reasons for the production of the vehicle are the loss of control of the fuel pump plunger and the presence of oil in the low pressure oil circuit. Such measures often fail to stop the diesel engine quickly. If the high pressure tubing connection nut is unscrewed, the diesel generator set's diesel engine will immediately “broken upâ€, and in most cases it can be quickly shut down;
The second is to cut off the gas line. For small diesel generators , the intake air duct is small, and the air filter can be directly wrapped with cotton cloth or the like, or the air filter can be quickly removed to directly block the air inlet. In any case, as long as it does block the air intake path, it can be stopped quickly.
Shanghai Ito Power Generator Co., Ltd. reminds users :
(1) When the throttle is cut off, the speed of the diesel engine is reduced or extinguished, and the governor malfunctions. After stopping, remove the governor cover for detailed inspection. If the flying hammer falls off, it should be re-installed, the spring break should be replaced, and the high-speed limit screw should be readjusted. If necessary, the adjuster can be removed for repair.
(2) If the injection pump is faulty, it should be examined in detail, find the cause, re-adjust the assembly, and if necessary, replace a certain part, or remove the injection pump for repair.
(3) Excessive oil in the sump of the diesel generator set should be reduced. Pistons, piston rings, and cylinder liners are severely damaged and should be replaced and repaired. The oil ring should be installed incorrectly.
In short, according to the different structures of various models, all measures can be taken to quickly cut off the oil and gas lines of the generator set, thereby avoiding accidents caused by the on-the-fly vehicles. It should be particularly pointed out that after the occurrence of a coaster failure, it is absolutely forbidden to reduce or remove the load. This will cause the diesel engine speed to rise sharply and cause greater damage. After stopping the machine, analyze the cause of the vehicle and eliminate it in time to avoid recurrence of the vehicle. More Diesel Generator Sets / Diesel Generator Sets / Diesel Generators Latest Quotes Welcome to inquire