Concept of Oil Circuit System of Diesel Generator Set

How much do you know about the oil system of diesel generator set? The west system of diesel generator set includes oil tank, diesel Frega filter, oil-water separator, high-pressure oil pipe, fuel delivery pump, fuel injection pump, fuel injector, low-pressure oil pipe and return oil pipe. The fuel tank is a container for storing diesel oil. The fuel tank is generally welded and connected by us using steel plate stamping technology. The oil filler is located at the top of the oil tank, and the filter screen is generally installed under the oil filler. In order to avoid some vacuum in the internal management of the tank, the upper part of the tank cap is generally equipped with a breather. Enterprises at the bottom of the oil tank are generally equipped with oil drain. Secondly, diesel filter is usually installed before the pump to remove large particulate impurities of diesel generator set. There is a paper filter type, slit metal, chip, and similar grid.

The fine filter of the diesel generating set is usually set after the pump is installed to remove a small amount of impurities, and the paper type of felt filter and metal mesh is used. The diesel oil from the fuel transfer pump enters the Frega filter and the gap between the shell and the paper filter technology from the oil inlet. Then we filter the system through the air filter element and flow out through the oil outlet through the central rod. A pressure limiting valve is set on the Flega filter cover. When the oil pressure exceeds a certain standard, the pressure limiting valve opens normally, and the excess diesel oil is directly returned to the diesel tank through the pressure limiting valve adjustment at the oil inlet.

Fuel injection pump, also known as high-pressure pump, has a complex structure and principle. The fuel injector is an assembly that emits low-pressure fuel into the combustion chamber of diesel generator. The injector nozzle and nozzle installed on the cylinder head are fixed by and embedded in the injector nozzle holder. The structural design of fuel injectors can be divided into two types: open type and closed type. The high pressure cavity of open type fuel injector can be directly connected with the combustion chamber through the injection holes, while the appearance of closed type fuel injector can be separated by adding a needle valve during the analysis. The function of oil-water separator is to separate the water mixed in the oil, which is made by using the light water weight principle of oil. When the buoy reaches or exceeds the red line, it is necessary to drain the oil drain plug and water. After the oil drain, the air in the fuel system should be discharged through the hand pump.

The fuel transfer pump is a primary component in the diesel generator set. Its function is to transfer the fuel tank to the injection pump. In order to ensure the circulation of diesel fuel in the low-pressure oil circuit in China, and to supply the fuel injection pump with sufficient capacity for enterprises and certain social pressure, the fuel delivery volume should be 3 to 4 times of the maximum fuel injection volume affected by the load, so as to ensure the normal operation of the national machinery. It can be divided into linear type and distributed type. The direct-discharge oil pump is composed of inlet check valve, piston, piston spring, plunger tappet, push rod, outlet check valve, hand oil pump and pump body. The side fuel pump of the fuel pump is installed. The eccentric cam of the camshaft reciprocates the piston in the injection pump by plunger and tappet push rod, pressurizing the fuel until the fuel injection pump is driven.

As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via sales@dieselgeneratortech.com.