News & Events
The famous enterprises of the Cummins generator set are Shandong comler and Commins engine, which are sold all over the country, and become the high-end products in the market. The utility model has the advantages of convenient operation, high efficiency, low fuel consumption, long service life, low carbon and environmental protection, etc. The perfect maintenance service system and the respected international brand will provide better service to the customers and contribute to the development and progress of China's mechanical and electrical industry as a whole. The analysis of the rough fault phenomena of the unit is summarized by the manufacturers of the comler generator group.
1.failure phenomenon
The engine is unstable, accompanied by the smoke of the exhaust pipe to produce a knocking sound like metal. The percussion sound intensifies when acceleration is accelerated, and the percussion sound decreases or disappears at high speed, and the knocking sound is reproduced at idle speed.
2.The cause of the failure
(1) due to the loosening of the fixed bolts of the fuel injection coupling, the advance angle is too large.
(2) the fuel quality is poor or the fuel supply of each cylinder is uneven, and the oil supply of individual cylinders is too large.
(3) for a long period of high speed operation, the engine temperature is too high or deflagration occurs.
(4) the coke in the combustion chamber is also severely deflagration.
T3.roubleshooting
Adjust the fuel advance angle in time and use the correct fuel.
Maintenance and maintenance techniques for diesel engines
Engine is the core component of a machine, so the maintenance and repair of engine is very important. Let's talk about diesel engine protection four, diesel engine's "flying car" phenomenon and emergency measures.
"Speeding" or speeding is a unique phenomenon of the engine. When the "flying car", the diesel engine speed lost control, and more and more quickly, even more than the allowed * speed and accompanied by a huge sound, serious damage to the scrap machine. There are two main reasons that cause the "flying car": one is the failure of the fuel injection pump governor itself, which makes it lose the normal adjustment characteristics; on the other hand, the change of the speed regulation characteristic of the diesel engine is that the fuel injection pump governor itself has no fault, and the diesel engine has extra diesel or oil into the combustion chamber during the operation. Burn. Emergency measures should be taken for the phenomenon of "flying car", and malfunctions will occur when the engine speed reaches a certain level. Emergency measures to stop speeding are:
(1) quickly retract the pedal to the parking area.
(2) with a deceleration device, the pressure relief handle is quickly pulled to the stop position (or decompression position).
(3) hang up the high speed gear in time, step down the brake pedal, slowly lift the clutch, and cause the engine to stall.
(4) quickly disconnect the high pressure oil pipe and stop the oil supply.
(5) quickly tighten the air filter with clothes to make the engine stop air and stall.
The above five steps are referred to as "deceleration, decompression, braking, and cut-off".
