Troubleshooting:
According to convention, it is generally believed that the Cummins diesel generator oil system is caused by air, blockage or loose seal. However, specifically for this diesel generator, maintenance. The staff first checked the oil system, filter element and other related components, and found no leaks or engine blockages. They also checked the fuel pump, fuel injector, etc. and found no problems. . Malfunctions in generator valve clearance, injection advance angle, etc. still exist.
Analysis of the causes of failure:
Then the technical staff analyzed that the check valve of the generator was not damaged, but only a little dust or dirt. dust particles adhered to the one-way engine oil return valve. The steel ball and sealing belt of the valve are on the upper surfaceer, which prevents the valve from closing tightly, which will cause the generator set to malfunction. It sounds simple, but it took several days from when the problem occurred to when it was resolved. Actually, I first suspected that there was something wrong with the oil return bolt, but when I pumped oil with a manual oil pump, I felt that the pressure in the oil system was basically normal, and there was also clear oil return. noise coming from single oil return bolt.
The diesel engine generator suddenly stalls and does not start
When adding load, you need to increase the throttle to increase the power output if the The accelerator is throttled and the engine. hold, you can check if the air intake is insufficient, resulting in insufficient combustion. If the problem still cannot be resolvedolu, the fuel injection timing may have a problem, resulting in insufficient power and blowing noise. Besides, if everything is normal with your diesel engine at no load, then it is likely that there is a problem with the generator windings and excessive resistance. This is not necessarily a problem with the diesel engine!
The diesel generator set turns off automatically after working normally for a while, what should I do?
If there is enough diesel in the fuel tank of the generator set, the diesel generator set may usually be equipped with a self-protection device. When the oil pressure is too low, it will do it automatically. Check the diesel engine oil level. If the engine oil level is normal, the diesel engine oil pump may be defective or the leak may be too large, preventing the engine from operating properly.establishing oil pressure. . If this still cannot be ruled out, you can ask questions.
1. Diesel power generation When the unit automatically stalls, the speed gradually decreases, operation is unstable, and white smoke is emitted. of the exhaust. This phenomenon indicates that there is water in the diesel, the cylinder seal is washed, or the automatic pressure relief is damaged. ?
Measures: Replace the cylinder seal and adjust the pressure reducing mechanism.
Other extinction phenomena and solutions:
1. During automatic shutdown, operation is continuously unstable and accompanied by abnormal knocking noises. This phenomenon is a sudden mechanical failure.
Common causes: broken crankshaft, broken piston pin, loose or broken connecting rod bolts, valve lock piece, valve circlip falling off, valve spring breakage or ruptureure of the valve stem, causing the valve to fall, etc.
Measures: Stop the machine immediately for inspection to avoid major mechanical accidents. It can be sent to a professional maintenance point for multiple inspections.
2. When automatic shutdown, the speed suddenly decreases and black smoke is seriously emitted from the exhaust pipe. This phenomenon is mainly caused by engine failure.Caused by sudden strong obstruction of engine operation.
Reasons: lack of water in the cooling system, engine overheating, causing voltage and blocking of the piston in the cylinder liner, poor friction lubrication. pair, burning tiles and holding the shaft or valve mechanism. Parts are seized, causing the engine to stall.
Measures: strengthen the maintenance of the lubrication system and the cooling system, and add sufficientlubricating oil and cooling water.
Extinction:
Also called extinction. When the reactor is operating at a significant reaction rate, if the temperature of the feed inlet is lowered so as to reach the lower limit of the multiplet region, the reaction rate will suddenly drop significantly and the reaction will proceed. will practically stop. This phenomenon is called extinction. The corresponding inlet temperature is called the extinction point. Usually refers to the car stalling.