The Simplest Inspection Method for Diesel Generators Not Generating Electricity

Diesel generators play an important role in daily life and are commonly used in households and factories. If we don’t use it in normal times, we must also carry out intensive maintenance and maintenance. Normal generators will produce no power generation and blockage of crossings when they encounter failures. At this time, if they are not properly repaired and maintained, they will cause Very serious consequences.The main feature of the power of diesel generators is that they are not running smoothly at low speeds, and the exhaust pipe emits black smoke at high speeds, and the sound is abnormal. When the diesel generator set has not reached the overhaul period, the insufficient power is mainly caused by the failure of the fuel supply system and the insufficient compression force of the cylinder. The following diesel generator manufacturer Dingbo Power will introduce you the easiest way to check if the generator does not generate electricity:

1. What warning characteristics have occurred before the failure. Under normal circumstances, before a diesel engine fails, its speed, sound, exhaust, water temperature, oil pressure, etc. will show some abnormal signs, that is, the failure warning feature. The staff can quickly make correct judgments based on the characteristics of the signs and take decisive measures to avoid accidents. For example, if the valve leaks, the engine will emit black smoke; if the crankshaft bush and journal are worn too much, the engine will emit a dull "boring" knocking sound.

2. Check the empty car first. If you increase the throttle and the empty car can reach the maximum speed, the fault lies in the working machinery. If the idling speed does not go up, the fault lies in the diesel generator.

3. Check the temperature of the root of the exhaust manifold. If the temperature of a certain cylinder is low, the cylinder does not work or does not work well. Fingers can be used for touch inspection at low speeds, but not at high speeds to prevent finger burns. At this time, you can spit saliva to the root of the exhaust manifold. If the saliva does not make a "click" sound, the cylinder is malfunctioning.

4. Pinch the high-pressure oil pipe with your fingers. If the pulsation is strong and the temperature is higher than that of other cylinders, it means that the oil pump is good, and the fuel injector may be seized in the fully closed position or the pressure of the pressure regulating spring of the oil nozzle is too large; if the high-pressure oil pipe has weak pulsation, The temperature is the same as that of other cylinders, which means that the fuel injector is seized or the pressure regulating spring is broken in the fully open position. If there is no pulsation in the high-pressure oil pipe at high speed and the temperature is higher than other cylinders, it indicates that the high-pressure oil pump is malfunctioning. If the exhaust pipe emits a smoke ring at low speed, it means that the outlet valve spring of the high-pressure oil pump is broken or the gasket is invalid. If the fuel system has no abnormal symptoms, the fault is poor compression of the cylinder.

5. During operation, if the blow-by under the engine oil port increases and the ambient oil smell is strong, the gap between the piston and the cylinder is too large and the seal is poor. If you use a screwdriver to turn the flywheel for two weeks when parking, and the number of times the hand feel resistance increases is not equal to the number of cylinders, you can judge that a certain cylinder has poor compression based on the hand feel. If there is a sound of air leakage at the junction of the cylinder head and the cylinder body, the ambient smoke is thick and there is a smoky smell, it means that the cylinder head gasket is leaking.If there is a metal knocking sound at the cylinder cover, which is related to the speed and is regular, it means that the gap between the rocker arm and the valve is too large. If there is a sound of air leakage at the cylinder head, at low speed, the temperature of the root of the intake manifold is high, and there is a sound of air leakage at the intake pipe when parking, it means that the intake valve is leaking; if the exhaust pipe emits black smoke at high speed, at night Flaming tongue in the exhaust pipe indicates that the exhaust valve is leaking.

6. What repairs and maintenance work have been carried out before this. Usually some improper repairs or maintenance will cause some failures, and the staff can find clues from these repairs or maintenance.

7. If the engine is still running, let it continue to rotate so that more checks are made for safety. When the diesel generator set has insufficient power, the user can troubleshoot according to the above methods.

If you have any other technical questions about diesel generator sets, please contact Dingbo Power by email dingbo@dieselgeneratortech.com, and our company will serve you wholeheartedly. Dingbo Power has a high-quality service attitude, integrity management, welcome to consult!