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Welcome to the website of Guangzhou Songge Electromechanical Equipment Co., Ltd.

松格机电

Professional generator set manufacturer sales lease maintenance

minshencao@hotmail.com Songge Electromechanical Consulting Hotline 020-84851836 minshencao@hotmail.com

Contact Songge Mechanical

Contact Songge Mechanical

Cummins generator set-Yuchai generator set-Silent diesel generator-Guangzhou Songge Mechanical and Electrical Co., Ltd.

020-84851836 Consulting Hotline: 020-84851836

曹先生 Contact: Mr. Cao

13609022338 Mobile: 13609022338

020-34865288 Fax: 020-34865288

342958639@qq.com Email: 342958639@qq.com

广东省广州市沙湾镇大涌口第二工业区1号 Address: No. 1 Second Industrial Zone, Dayongkou, Shawan Town, Guangzhou City, Guangdong Province

Cummins Diesel Generator Frequently Asked Questions

Common problems of diesel generators

I. What are the parts that need to be replaced during a regular repair of a Cummins diesel engine?

Answers: 1. Piston ring; 2. Intake valve; 3. Exhaust valve; 4. Intake valve seat; 5. Intake and exhaust valve duct; 6. Active cooling nozzle; 7. Upper repair kit; 8. Supercharger repair kit; 9.Valve lock plate; 10.Link rod; 11.Oil pan gasket; 12.Injector adjustment and accessories; 13.PT oil pump adjustment and accessories; 14.Cylinder liner .

Diesel generator sets

Silent diesel generator set

2. What are the reasons for diesel black smoke?

Answer: 1. The turbocharger fails to work; 2. The valve assembly is not well sealed; 3. The injector or the high-pressure oil pump precision coupler fails to work; the camshaft components are excessively worn; 5. The intercooler is too dirty and the air intake is insufficient; 6. Poor rubber ring seal of fuel injector; 7. Pull cylinder of cylinder assembly; 8. Poor quality of diesel oil; 9. Blocked air filter.

3. What are the causes of diesel white smoke?

Answers: 1. Failure of the precision parts of the fuel injector or high-pressure oil pump; 2. Diesel engine oil (ie, turbocharger oil); 3. Excessive wear of valve guides and valves, oil leaking into the cylinder; 4. Water in diesel oil; 5. The copper sleeve of the fuel injector leaks into the cylinder; 6. The piston ring wears excessively or the oil ring is installed reversely, and the cylinder burns engine oil. 7. The exhaust breathing tube has not been cleaned or blocked for a long time.

4. What are the reasons for redness of the exhaust pipe and supercharger under high load?

Answers: 1. The fuel injector or high-pressure oil pump precision coupling fails; 2. The camshaft, follower arm assembly, and rocker arm assembly are excessively worn; 3. The intercooler is too dirty, and the air intake is insufficient; 4. The supercharger works Failure; 5. Poor sealing of valve components.

V. Under what circumstances does a diesel engine have a large power loss when working?

Answer: 1. Excessive wear of the cylinder components; 2. Failure of the injector or high-pressure oil pump precision coupling; 3. Failure of the PT oil pump; 4. Failure of the timing mechanism; 5. Failure of the supercharger; 6. Medium The cooler is too dirty; 7. The valve assembly is not well sealed; 8. The diesel grid and air grid are too dirty.

What is the cause of the low engine oil pressure?

Answer: 1. The clearance between the bearing bush and the crankshaft is too large, that is, the bearing bush and the crankshaft are worn too much; 2. The various bushings and shafting are worn too much; 3. The cooling nozzle or the oil pipe leaks oil; 4. The oil pump works Failure; 5, oil pressure sensor failure; 6, the oil cooler is too dirty and the oil temperature is too high; 7, poor oil quality.

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What are the reasons for the high water temperature of the diesel engine?

Answers: 1. The water pump is damaged; 2. The thermostat is damaged; 3. The fan belt and the water pump belt are too loose; 4. The water tank is too dirty (internal or external).

8. Under what circumstances will the diesel burn out?

Answers: 1. The oil pump fails to work; 2. The bearing gap is too large, causing the oil pressure to be too low; 3. The diesel engine is short of water and high temperature occurs; 4. The oil grid is blocked; 5. The oil quality is poor.

Nine, what are the reasons for the large turbidity under the diesel engine or the discharge of white smoke from the lower turbidity gas pipe?

Answer: 1. Excessive wear of the cylinder components; 2. Water in the oil pan (cylinder head rupture, injector copper sleeve water, cylinder sleeve rotten, cylinder liner rubber ring leakage, cylinder body leakage); 3. pull cylinder phenomenon.

10.What causes the unstable speed of the diesel engine?

Answer: 1. The diesel engine has a fault with excessive power loss; 2. The electronic actuator of the PT pump is excessively worn and the internal parts of the PT pump are faulty; 3. The EFC electronic speed governor fails; 4. The speed measuring head is damaged; 5. The diesel The grid is too dirty; 6. Diesel pipeline leaks air.

Eleven, under what circumstances does the diesel oil pan have water?

Answers: 1. The cylinder liner is broken or the rubber ring is damaged; 2. The cylinder is broken; 3. The cylinder head is broken; 4. The copper sleeve of the injector is leaking.

Diesel generator sets

Diesel generator sets

What is the cause of abnormal noise in diesel engines?

Answers: 1. Collision between valve and piston; 2. Loosening of connecting rod screws, collision between piston and cylinder head; 3. Failure of EFC board; 4. Instability of oil supply caused by failure of PT oil pump; 5. Injector dropping oil and exploding cylinder; 6, diesel engine bearing gap is too large; 7, diesel pipeline leaks.

Thirteen, what is the cause of diesel oil in the diesel oil pan?

Answer: 1. The O-ring of the injector is damaged; 2. The atomization of the injector is poor and the oil drips; 3. The injector is not installed properly; 4. The O-ring is not replaced when the injector is reinstalled.

What is the cause of excessive diesel engine vibration?

Answers: 1. Excessive bearing clearance of the diesel engine or excessive axial clearance. 2. Insufficient atomization of the injector and knocking on the cylinder. 3. Deformation of the connection between the diesel engine and the electric ball. 4. Improper installation of the flywheel assembly. 5. Crankshaft and connecting rod. Various fastening screws are loose; 6. The supercharger fails to work.

15. What is the economic value of using a capacitor compensation cabinet to improve the power factor?

Answers: 1. Improve the power supply capacity of power generation equipment; 2. Save investment in power generation equipment and increase the utilization rate of power equipment; 3. Reduce voltage loss in the power system, reduce voltage fluctuations, and improve power quality; 4. Reduce transmission and transformation 5. The current in the power distribution equipment, thereby reducing the power loss in the power transmission process; 5. Reducing electricity costs and costs.

Cummins diesel generator set

Cummins diesel generator

16.What is the reason for the failure of the diesel generator to start?

Answers: 1. The battery is dead; 2. The starter motor is faulty; 3. The magnetic starter is faulty; 4. The fuel shut-off valve is faulty; 5. The DC monitoring board is faulty; 6. The diesel pipeline has air; 7. The oil pump is faulty.

17.Under what circumstances does the generator have no voltage output or excessive voltage fluctuations?

Answer: 1. PMG stator or rotor is damaged; 2. AVR board is damaged; 3. Diode component is damaged; 4. Exciter rotor or stator is damaged; 5. Main electric ball stator or rotor is damaged; 6. P2, P3, P4 wire is short-circuited Or open circuit; 7, P6, P7, P8 lines are short or open; 8, X, XX lines are short or open.

18.What causes the oil pressure alarm when the oil pressure is normal?

Answer: 1. Failure of oil pressure alarm; 2. Ground contact of oil pressure alarm; 3. DC monitoring board failure.

XIX. What is the reason for the high water temperature alarm when the water temperature is normal?

Answer: 1. The water temperature alarm is faulty; 2. The water temperature alarm wiring touches the ground; 3. The DC monitoring board is faulty.