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Causes and Solutions of Chongqing Cummins Diesel Generator Set

阅读:160次 发表时间:2019-08-28 Article Source: Wuhan Generator Leasing Company Read: 160 Times : 2019-08-28

Various problems will occur when the Cummins diesel generator set in Chongqing is used for many times. After a fault occurs, the unit will respond greatly and directly display the unit failure. The faults used in Chongqing Cummins diesel generator set are not terrible. What is terrible is that they do not know the cause of the fault and how to solve it.

1. The gas phase of the diesel generator of Chongqing Cummins Diesel Generator is incorrect. Pour the oil into the combustion chamber and burn slowly in the turbocharger. Diesel fuel has impurities, poor fuel injection quality or oil droplets; when the fuel is over-injected or the nozzle is atomized, the combustion period will be prolonged. Air filter plugged, intake, exhaust manifold gaskets or leaks, resulting in insufficient intake; fuel injection timing is incorrect, ignition time is too late; cylinder liners, piston rings are worn or broken, cylinder gaskets leak, valves are not tight Causes insufficient cylinder pressure; too high water temperature, blocked oil cooler or insufficient oil pressure. The turbocharger of Chongqing Cummins diesel generator set is overheating and the exhaust temperature is too high. When the situation is severe, it can ignite the lubricating oil in the supercharger, causing bearing death and burned seal rings.

2. In the Cummins diesel generator set in Chongqing, the oil return pipe is blocked, and the inner hole of the sealing gasket of the pipe joint is smaller than the inner diameter of the oil pipe, which results in poor oil production. The crankcase has poor ventilation or the tightness of the cylinder, gas enters, and the pressure in the crankcase rises; the seal ring is damaged or the end of the compressor is damaged due to the aging of the 0-shaped seal; the turbocharger lubricating oil inlet pressure is too high (normal pressure (0.25-0.4 MPa). Generator turbocharger and compressor seals are close to the oil leak near the impeller.

3. The diesel generator of Chongqing Cummins Diesel Generator often works under overheating, low temperature and high speed. Excessive cylinder wear, pistons and piston rings, generating a large amount of exhaust gas, carbon particles will crank the crankcase; oil changes are not timely; after replacing the turbocharger and diesel engine overhaul, the filter element of the oil filter is improperly installed or blocked; cooling water or diesel Enter the lubrication system. Generator oil is deteriorated or seriously polluted. This phenomenon is the oil hole clogging and oil leakage behind the front neck of the steam turbine. Steam turbine front bearing and journal wear.

4. The filter cleaning agent of Chongqing Cummins diesel generator set is dirty, the medium cooler, the impeller, and the blade diffuser are dirty. The turbocharger turbine contains more carbon, which increases the rotation resistance. Because the exhaust pipe is blocked and deformed, the rotor speed is not high. If the turbocharger outlet pressure drops suddenly, usually due to bearing damage, the bearing should be replaced immediately. The generator booster pressure has decreased.

5. External intake and exhaust system of Chongqing Cummins diesel generator set. In general, the air cleaner element or the connection pipe between the air cleaner and the supercharger is disconnected; the intake and exhaust system connections are loose; the intake manifold exhaust pipe gasket is ablated or the fixing bolts are loose; the turbine Loosening of the fastening bolts of the inlet flange of the turbocharger or the lining is broken. The generator impeller and blade are abnormally damaged or broken.

The above is a brief introduction to the causes and solutions of Chongqing Cummins diesel generator set. I hope this knowledge will help you!