Good Quality Fuel Injection Pump 4063844 101062-9270

As a core component of the fuel system of an internal combustion engine, the performance of the fuel injection pump directly determines the power output, fuel economy and emission level of the engine. This article will take the fuel injection pump 4063844 101062 9270 as an example, to introduce you to the main performance parameters of the fuel injection pump and the factors that affect the performance of the fuel injection pump.

1. The main performance parameters of the fuel injection pump

(1) Fuel supply volume and uniformity: fuel supply volume refers to the amount of fuel supplied to the injector by the injection pump according to the requirements of the engine workload. For multi-cylinder engines, the difference between the fuel supply of each cylinder should not exceed 3% to ensure the smooth operation of the diesel engine. The fuel supply is controlled by the governor, which can automatically adjust the fuel supply within the specified speed range to adapt to load changes, thus maintaining the normal operation of the diesel engine. Insufficient oil supply will lead to starting difficulties, power loss; oil supply is too large may cause air-fuel ratio imbalance, resulting in black smoke.

(2) Fuel supply advance angle: The fuel supply advance angle refers to the angle of the crankshaft relative to the upper stop when the injection pump starts to supply fuel. Oil supply too early or too late will affect the combustion efficiency and power output of the diesel engine. Oil supply too early will lead to diesel engine work rough, startup difficulties, fuel consumption rate increases; oil supply is too late will make the combustion is not complete, exhaust smoke, also lead to a decline in power.

(3) fuel supply pressure: injection pump to the injector fuel supply needs to have a certain pressure to ensure that the fuel in the injector good atomization. Injector pressure is too low will lead to poor atomization, increase fuel consumption, exhaust smoke; injection pressure is too high will accelerate the wear and tear of the injector pump and injector parts, and even crack the high-pressure oil pipe expansion.

(4) oil supply law: the injection pump should supply oil to the injector in accordance with a reasonable oil supply law to ensure that the injection law of the injector and the formation of the mixture and the combustion process to match. The irrationality of the fuel supply law may lead to the drip phenomenon of the injector, affecting the combustion efficiency.

2. Factors affecting the performance of fuel injection pump 4063844 101062-9270

(1) Structural factors:

① parts wear: injection pump in the plunger coupling, outlet valve coupling and other parts of the wear will affect the sealing performance, resulting in oil supply pressure and oil supply decreased.

② parts tolerance: plunger, spray hole diameter tolerance, plunger oil control edge tolerance, high pressure oil pipe diameter, length tolerance and surface roughness, etc. will affect the uniformity and stability of oil supply.

③ Cam shape: the shape of the cam of the injection pump determines the movement speed of the plunger, which in turn affects the law of oil supply.

Utilization factors:

④ Fuel quality: the physical properties of fuel such as viscosity and density will affect the fuel supply performance of the injection pump.

⑤ Improper adjustment: Improper adjustment of the spring opening pressure of the outlet valve and the needle valve opening pressure, as well as improper calibration of the injection pump, can lead to uneven fuel supply or unreasonable fuel supply pattern.

⑥ Low-pressure oil circuit pressure: the oil delivery pressure of the low-pressure oil circuit affects the oil charging of the injection pump, and insufficient oil charging will lead to uneven oil supply to each cylinder and insufficient injection pressure.

(2) Environmental factors:

① temperature: high temperature environment, the viscosity of the fuel is reduced, may affect the sealing performance of the injection pump and fuel supply pressure.

② vibration: vibration during engine operation may affect the tight fit of the components of the injection pump, resulting in unstable fuel supply.

The performance of the fuel injection pump directly affects the combustion efficiency, power output and economic performance of the diesel engine. In order to ensure the long-term stable operation of the fuel injection pump 4063844 101062 9270, the daily calibration and maintenance should not be neglected as well, and regular inspection and maintenance are required, including checking the wear and tear of the parts, adjusting the fuel supply parameters, and maintaining the fuel quality.