Diesel generator set west road system includes fuel tank, diesel Fleetguard filter, oil-water separator, high pressure fuel pipe, fuel transfer pump, fuel injection pump (including governor), fuel injector, low pressure fuel pipe and fuel return pipe. The tank is filled with precipitated filtered diesel.. It is the diesel fuel pump drawn from the fuel tank and the pumped person. After the diesel Fleetguard filters out impurities, it enters the injection pump. The high pressure output from the fuel injection pump and diesel fuel are injected into the combustion chamber through the high pressure system fuel pipe and the fuel injector. Since the fuel supply of the pump is much greater than the fuel supply of the fuel injection pump, the excess diesel is returned to the pump through the return pipeline.. The fuel pump from the fuel tank to the population of this fuel is called low-pressure fuel. The low-pressure control oil circuit is only used to supply filtered fuel to the fuel injection pump. The oil pressure from the fuel injection pump to the fuel injector is established by the fuel injection pump, and is generally greater than 10MPa, so this section of the oil circuit is called the high-pressure oil circuit. Based on the fuel mist sprayed into the combustion chamber through the injector, mixed with air to form a combustible mixture.
1. Injector
Fuel injector is an assembly that emits low-pressure fuel to the combustion chamber of a diesel generator. According to the request of different diesel generators, the atomized diesel oil from the low-pressure fuel pump is sprayed into the combustion chamber at a certain injection pressure, spray fineness, fuel injection discipline, range and spray cone angle to a specific position in the combustion chamber, and mixed and burned with air. The injector nozzle and the nozzle installed in the cylinder head are fixed by the embedded injector nozzle holder. The structural design of the fuel injector can be divided into two types: open and closed. The high pressure cavity of the open fuel injector can directly communicate with the combustion chamber through the fuel injection hole, while the closed fuel injector can be directly connected to the combustion chamber. During the analysis, a needle valve was added to give some isolation. The modern diesel generators and diesel generators are based on closed injectors, which are divided into hole injectors and pin injectors, which are used in separate combustion chambers.
2. Oil-water separator
The role of the oil-water separator is to separate the water mixed in the oil, which is made using the principle of light water weight of the oil. When the buoy reaches or exceeds the red line, the drain plug should be released and the water should be drained. After draining, the air in the fuel system should be discharged through the hand oil pump..
3. Fuel pump
Fuel transfer pump is an indispensable primary component in diesel generators. Its role is to deliver the fuel tank to the injection pump. To ensure that our country’s diesel fuel circulates in the low-pressure oil circuit, and to provide fuel injection pumps with a sufficient number of companies and a certain social pressure, the fuel delivery volume should be 3 to 4 times the maximum fuel injection volume affected by the load to ensure the national machinery’s Operate normally. It can be divided into two types: linear type and distributed type. The straight-discharge oil pump is composed of imported check valve, piston, piston spring, plunger tappet, push rod, outlet check valve, hand oil pump and pump body.. Installed in In the side fuel pump of the fuel pump, the eccentric cam of the camshaft is driven by a plunger and a tappet in the injection pump to move the piston back and forth to pressurize the fuel to the fuel injection pump. This kind of fuel transfer pump sometimes needs to discharge the air in the fuel from the low pressure side of the traditional fuel management system (from the fuel transfer pump to the fuel injection pump), so we have prepared a manual fuel transfer pump that delivers the fuel pressure to the fuel injection pump. According to the fuel path, the fuel pump can be divided into two types: horizontal type and vertical type.
Post time: Jul-22-2021