Maintenance Keys for Diesel Fuel Injection Pump of Silent Generator Set 1

Today, we will briefly introduce the maintenance points of the diesel fuel injection pump of the silent generator set.

It is necessary to turn off the use and filtration of diesel oil to ensure that the diesel oil entering the fuel injection pump is highly clean: Generally speaking, the filtration requirements of diesel engines for diesel oil are much higher than those of gasoline engines for gasoline. Diesel, and at least 48h precipitation. Strengthen the cleaning and maintenance of the diesel filter, clean or replace the filter element in time; clean the diesel tank in time according to the operating environment conditions, completely remove the sludge and water at the bottom of the fuel tank, and any impurities in the diesel will affect the plunger of the fuel injection pump and the oil output. Serious corrosion or wear of valve couplers and transmission parts.

Always check whether the oil quantity and quality in the oil pool of the fuel injection pump meet the requirements: check the quantity and quality of the oil in the fuel injection pump before starting the diesel engine each time (except for the fuel injection pump that is forcibly lubricated by the engine) to ensure that the quantity of oil is sufficient , The quality is good. If the oil is deteriorated due to mixing with water or diesel oil, the lighter ones will cause early wear of the plunger and the oil outlet valve, resulting in insufficient power of the diesel engine, difficulty in starting, and corrosion of the plunger and the oil outlet valve in severe cases. Rust.

Due to internal leakage of the oil pump, poor operation of the oil outlet valve, wear of the tappet and the casing of the oil transfer pump, and damage to the sealing ring, diesel oil will leak into the oil pool and dilute the oil. Therefore, the oil should be replaced in time according to the quality of the silent generator set. It is necessary to thoroughly clean the oil pool, and remove the sludge and other impurities at the bottom of the oil pool, otherwise the oil will deteriorate after a short time of use. The amount of oil should not be too much or too little. Too much oil in the governor will easily lead to "speeding" of the diesel engine. Too little oil will cause poor lubrication. The oil dipstick or the oil plane screw shall prevail. In addition, when the diesel engine is not used for a long time, it is necessary to check whether there are impurities such as water and diesel oil in the oil in the oil pump oil pool. Pieces rusted stuck and scrapped.

It is necessary to regularly check and adjust the oil supply advance angle of the fuel injection pump and the oil supply interval angle of each cylinder: during use, due to the looseness of the coupling bolts and the wear of the camshaft and roller body parts, the oil supply advance angle and the supply of each cylinder are often caused. The change of the oil interval angle will make the diesel combustion worse, the power and economy of the diesel engine will deteriorate, and at the same time, it will be difficult to start, unstable in operation, abnormal noise and overheating. In actual use, most drivers pay attention to the inspection and adjustment of the overall fuel supply advance angle, but ignore the inspection and adjustment of the fuel supply interval angle (involving the adjustment of the single pump fuel supply advance angle). However, due to the wear of the camshaft and roller transmission components, the oil supply of the remaining cylinders is not necessarily timing, which will also lead to difficulty in starting the diesel engine, insufficient power, and unstable operation, especially for the fuel injection pump that has been used for a long time. It is said that more attention should be paid to the inspection and adjustment of the oil supply interval angle.

It is necessary to regularly check and adjust the fuel supply of each cylinder of the fuel injection pump: due to the wear of the plunger coupler and the oil outlet valve coupler, the internal leakage of diesel oil will cause the fuel supply of each cylinder to be reduced or uneven, resulting in difficulty in starting the diesel engine. Insufficient power, increased fuel consumption, and unstable operation. Therefore, it is necessary to regularly check and adjust the fuel supply of each cylinder of the fuel injection pump to ensure the performance of the diesel engine power. In actual use, the fuel supply amount of each cylinder can be determined by observing the exhaust smoke of the diesel engine, listening to the sound of the engine, and touching the temperature of the exhaust manifold.

Regularly check the camshaft clearance: the axial clearance of the camshaft of the fuel injection pump is very strict, generally between 0.03 and 0.15mm. If the clearance is too large, it will aggravate the impact of the roller transmission parts on the working surface of the cam, thereby increasing the cam The early wear of the surface changes the advance angle of oil supply; the camshaft bearing shaft and radial clearance are too large, which is easy to cause the camshaft to run unevenly, the oil volume adjustment rod shakes, and the oil supply volume changes periodically, which makes the diesel engine run unevenly. Therefore, Check and adjust regularly. When the axial clearance of the camshaft is too large, shims can be added on both sides for adjustment. If the radial clearance is too large, it is generally necessary to replace the new product.

Starlight Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.