What is the reason for the sudden flameout during the operation of the diesel generator set

First, the diesel generator set in the operation of the sudden flameout of the cause of the following four points:

1. The driving teeth of the fuel injection pump are broken and the transmission gear is faulty.

2. The shaft of the fuel injection pump is broken.

3. The internal moving parts of the diesel generator set are stuck.

4. The fuel injection pump controls the lever and the connecting pin to fall off.

2. Diagnosis and treatment methods.

1. Use the starter to drive the diesel generator set, if it can rotate normally, observe whether the camshaft of the fuel injection pump rotates, if it rotates normally, it means that the fuel injection pump is faulty. It should be checked whether the manipulation mechanism is working properly. You can pull the throttle rod to check whether the connection between the control arm and the control shaft is good.

2. If the camshaft of the fuel injection pump does not rotate, it is the camshaft gear fastening bolt is loose, the camshaft is broken or the gear in the gear chamber is faulty.

3. If the starter drives the diesel generator set to fail, it means that the diesel generator set is an internal fault. For example, the piston and the cylinder are stuck, the crankshaft and the bearing are crushed, the plunger of the fuel injection pump is stuck, and the mechanical failure of the valve mechanism is stuck. Under normal circumstances, the valve chamber cover should be opened first.

If the oil pressure is too low or the temperature is too high from the gauge during operation, it needs to be overhauled directly for the specific situation.

Hello, (1) The diesel vehicle slowly turns off itself during operation (for reference only: (Fujian Yanan diesel generator set) Yaxiaonan answers for you) Fault phenomenon: gradually weak during operation, and finally until it slowly turns off by itself.

Cause of failure: The main reason for the failure is the interruption of oil supply and the lack of fuel supply. The specific reasons are: no oil in the oil tank, blocked air vent of the oil tank, no work of the output pump, blocked oil circuit, air in the oil circuit, and relief valve.

damage, etc. Fault judgment: first check whether there is oil in the oil tank, whether the ventilation hole of the fuel tank is unblocked, then loosen the gas release screw of the fuel injection pump, pump the oil with an electric fuel pump or hand oil pump, check whether the air intake in the oil circuit, whether the oil circuit is unblocked, find out the air leakage or blockage if necessary, and finally check whether the oil pump and the overflow valve are working normally, and replace the assembly to repair if necessary.

2) Diesel vehicles suddenly turn off by themselves during operation.

Fault phenomenon: The engine suddenly stalls and is difficult to start.

Cause of failure: The fault refers to the absence of abnormal symptoms before the flameout, and the main reason is mostly caused by the sudden cessation of oil supply by the fuel injection pump after the damage of related parts. If the semi-circular key of the drive shaft of the fuel injection pump is sheared, or the bakelite transmission plate of the coupling is broken, so that the fuel injector can not work, the fuel injection pump operation rod and its connecting pin are loosened, and the fixing bolt of the fuel injection pump drive shaft and the driving disc is loosened, and the fuel injection pump cannot be driven to work

Diesel engine cylinder or burning bearing shaft, as well as fuel injection pump drive chain breakage, etc.

Fault judgment: Start the engine first, such as the engine crankshaft.

It can be rotated, which is caused by the failure of the fuel injection pump to work, and the coupling should be checked.

Whether the part is in good condition, and then check whether the semi-circular key of the drive shaft of the fuel injection pump is damaged, and repair it if necessary, if the engine crankshaft does not move, the piston holding the cylinder, burning the bearing holding shaft and the drive chain may be broken, etc., and the cause should be found out and repaired.

3) Measures to prevent diesel engine self-extinguishing failure.

Regularly inspect the oil circuit and dredge it with high-pressure air.

If the tubing is found to be ruptured, it should be welded and repaired or replaced with new parts in time.

Clean the outlet valve and replace the broken outlet valve spring.

Inspect the oil pump plunger and injector needle valves, and grind or replace worn parts if necessary.

Overhaul the oil pump springs, speed regulating springs and valve springs, and replace them in time if they are found to be broken.

Check whether there is water leakage and oil leakage, and repair it if necessary, so as to avoid the engine cylinder and bearing shaft caused by engine overheating or poor lubrication and causing self-stalling.

There are many reasons why the diesel generator stalls out after starting, such as a gradual decrease in speed, unstable operation, and white smoke from the exhaust, which indicates that there is water in the diesel, the cylinder gasket is washed out, or the automatic decompression is damaged.

When the automatic flame-off, the operation is continuous and unstable, accompanied by abnormal knocking sound, this phenomenon is a sudden mechanical failure, and the common causes are: crankshaft breakage, piston pin breakage, connecting rod bolt loosening or breaking, valve lock plate, valve spring break, valve stem break, valve spring break, valve stem break, resulting in valve falling off, etc. Once the generator is found to be in this situation during the work, it should be stopped immediately for inspection to avoid major mechanical accidents, and can be sent to the relevant maintenance point for comprehensive inspection.

There are more than one or two reasons for the diesel generator to turn off after starting, and when there is a problem, it is necessary to find a solution according to the specific cause.

Users are not familiar with the failure and treatment of the unit, and should contact the manufacturer in time for after-sales!

1. When the diesel generator set is automatically turned off, the speed gradually decreases, the operation is unstable, and the exhaust emits white smoke, which indicates that there is water in the diesel, the cylinder gasket is washed out, or the automatic decompression is damaged. Measures: Replace the cylinder gasket and adjust the pressure reducing mechanism.

2. The exhaust pipe emits black smoke and the gas throttle cannot work normally, which is mostly caused by poor diesel combustion in the diesel generator, the main reason is that the air filter and the intake tract are seriously blocked by impurities, resulting in insufficient air intake, the air filter should be cleaned, the intake pipe should be dredged to ensure sufficient air. 3. When the automatic flame-off, the operation is continuous and unstable, accompanied by abnormal knocking sound, this phenomenon is a sudden mechanical failure, and the common reasons are: crankshaft breakage, piston pin breakage, connecting rod bolt loosening or breaking, valve lock plate, valve circlip falling off, valve spring breaking or valve stem breaking, resulting in valve falling off, etc.

Once the generator is found to be in this situation during the work, it should be stopped immediately for inspection to avoid major mechanical accidents, and can be sent to a professional maintenance point for a comprehensive inspection. 4. When the engine is automatically turned off, the speed is suddenly reduced, and the exhaust pipe is seriously emitted black smoke, which is mostly caused by the sudden and strong obstruction of the engine operation, and the reasons are: lack of water in the cooling system, overheating of the engine, resulting in the piston being strained in the cylinder liner, stuck, poor lubrication of the friction pair, and the burning tile holding shaft or the parts of the valve mechanism are bitten, etc., so that the engine is suffocated.

The maintenance of the lubrication system and cooling system should be strengthened, and sufficient lubricating oil and cooling water should be added. 5. When the engine is automatically turned off, the sound of the diesel engine is muffled, the operation is difficult, and black smoke is emitted. This indicates that the diesel engine is overloaded.

6. There is no abnormality before automatic flame-out, and the flame is suddenly extinguished, which indicates that the fuel injection pump or fuel injector suddenly stops supplying oil. The reasons are: the plunger spring is broken, the plunger is stuck by impurities, the injector needle valve is stuck, the compression spring is broken, the fuel injection pump control lever and its connecting pin fall off, the fixing bolt of the fuel injection pump drive shaft and the driving disc is loosened, the key on the shaft is cut flat due to looseness, resulting in the sliding of the drive shaft or the driving disk, so that the drive shaft can not drive the fuel injection pump to work, etc.

7. When automatic flame-off occurs, the speed gradually decreases, and there is no abnormal phenomenon in the running sound of the diesel engine and the exhaust smoke. This shows that the horizontal bar diesel engine should not be used, because the diesel in the fuel tank is used up, or the fuel tank switch is open, or the fuel tank vent, fuel filter and fuel pump are blocked, or the oil circuit is not sealed into the air, resulting in "air resistance" (accompanied by unstable speed before the flameout) Measures: The low-pressure oil circuit should be checked, first check whether the fuel tank, fuel tank switch, filter, and fuel pump are short of oil, blocked or the switch is not opened, etc., and then loosen the air release screw on the fuel injection pump, and press the fuel pump button. Observe the oil flow at the vent screw, if there is no oil outflow, the oil circuit is blocked, if there are bubbles in the flowing oil, it is the air entering the oil circuit, which should be checked and eliminated section by section.

In the operation of the shared diesel engine, the causes and treatment of sudden flame-off can be divided into the following points: 1. Check whether the fault indicator is lit. If it is lit, look for the fault manual, check the possible faults, and check and eliminate them one by one; 2. Check whether the instrument indication or the fuel tank diesel fuel is used up.

If so, add fuel of the corresponding specification for the diesel engine; 3. Check whether there is diesel oil leakage in the appearance of the diesel engine, such as the rupture of the high-pressure oil pipe, the aging and damage of the rubber oil pipe, etc., the diesel oil can leak, and the oil pipe enters the air to extinguish the fire and stop; 4. Before the shutdown, I feel that the power is insufficient, black smoke is emitted, it is getting more and more serious, the air filter is too dirty, the air intake is insufficient, and the filter may be replaced; 5. Check whether each sensor is not working properly, whether it is shut down due to false alarm, if so, replace the corresponding sensor; 6. Check whether the oil quantity of the oil pan is sufficient. When the amount of oil is consumed a lot, follow-up inspection will be carried out; 7. Use the manual steering wheel to check whether the crankshaft and cylinder liner piston enter whether there is a cylinder or rubber fault, if so, the engine must be disassembled for inspection; 8. The parts of the oil pump may be adhered and damaged, and the diesel may become dirty, causing the diesel engine to shut down. Special Attention:

1. If the diesel engine suddenly turns off and stops, do not start the engine urgently, wait for the troubleshooting and then run the diesel engine again! 2. When the diesel engine is equipped with an electronic control unit (ECU), it is best to ask a professional manufacturer's engineer to use a special computer testing equipment for diagnosis!

Wall quietly noisy Xiangwo generator set.

Sudden flameout during work is a fault of the unit, and the diesel generator set cannot be extinguished normally after the correct flame-out operation, which is also a fault.

1. Failure of exhaust brake button valve. Air leakage or pipeline rupture and no ventilation, resulting in the butterfly valve power cylinder not working, so the butterfly valve valve core can rotate without touching and block the exhaust pipe; The stop oil cylinder is not ventilated and leaks, the oil volume is still at a certain position, and the engine cannot be turned off.

2. The power cylinder of the exhaust brake butterfly valve is faulty. It does not work, and the air leaks, although the exhaust brake button valve is pressed, but due to the leakage of the power cylinder, the piston stroke is not large, and the exhaust pipe cannot be blocked, so the ignition cannot be turned off.

3. The linkage mechanism between the exhaust brake butterfly valve and the power cylinder is loose, and although the power cylinder moves, the exhaust pipe cannot be blocked.

4. The plunger of the fuel injection pump bites, the plunger spring is broken, and although the cylinder is stopped, the throttle cannot be pulled to adjust the lever, causing the engine to rotate at a certain speed.

5. The throttle cable is stuck, does not return, and cannot stop the oil supply, so it cannot be turned off.

What is the reason for the sudden stalling of a small gasoline engine generator during operation? You can't think of this reason.