Fuel Lift Pump 2641728

Products Description

  1. According to the engine model
  Different models of Perkins diesel engines have differences in power, displacement, fuel injection system, and require different parameters such as flow rate and pressure of the lift pump. If the flow rate and pressure of the pump cannot meet the needs of the engine, it will lead to insufficient power, unstable speed, and even engine stalling. Therefore, when selecting a lift pump, it is necessary to strictly refer to the engine model and technical parameters, and choose a lift pump that matches it to ensure that the engine's performance is fully utilized.

2. Consider work environment factors
  a. High temperature environment: In high temperature environments, the viscosity of diesel will decrease and the volatility will increase, which puts higher demands on improving the sealing performance of pumps and the high temperature resistance of components. For example, Perkins diesel engines operating in desert areas often have ambient temperatures as high as 40 ° C-50 ° C. In this case, high-temperature resistant sealing materials and special heat dissipation structures should be selected for the lift pump. High temperature resistant sealing materials can maintain good elasticity and sealing performance at high temperatures, preventing diesel leakage; The special heat dissipation structure can effectively reduce the temperature during the operation of the lift pump, avoiding component damage caused by high temperature. Some lift pumps will add heat sinks on the surface of the pump body to increase the heat dissipation area and improve heat dissipation efficiency; Alternatively, forced air or water cooling can be used to ensure stable operation of the lift pump in high-temperature environments. If the lifting pump does not have good high temperature resistance, the sealing components may age and deform due to high temperature, resulting in diesel leakage, which not only causes fuel waste but also may lead to safety accidents; At the same time, high temperatures may cause the components inside the pump to expand and get stuck, affecting the normal operation of the lift pump.

  b. High cold environment: In high cold areas such as polar regions and high-altitude mountainous areas, the ambient temperature is extremely low, and diesel is prone to become viscous and have poor fluidity, which poses difficulties for the oil suction and delivery of the lift pump. The Perkins diesel engines used in these areas require a lift pump with good low-temperature starting performance and cold resistance. The internal structure and materials of the lifting pump should be specially designed and selected to adapt to low-temperature environments. Some lift pumps use rubber seals with excellent low-temperature performance to prevent the seals from hardening and losing elasticity at low temperatures, leading to seal failure; In terms of pump body materials, choose low-temperature resistant metal materials to avoid damage caused by low-temperature embrittlement. Heating devices can also be installed inside the lift pump to preheat the diesel before starting the engine, reduce its viscosity, improve its fluidity, and ensure that the lift pump can smoothly absorb and deliver oil. If the lift pump cannot adapt to the high cold environment, there may be problems such as difficulty starting and poor oil suction, which may prevent the engine from working properly.

  c. High altitude environment: As the altitude increases, atmospheric pressure decreases and the air becomes thin, which can affect the intake volume and combustion efficiency of the engine. Perkins diesel engines operating in high-altitude areas require a lift pump to provide higher pressure to ensure that diesel can smoothly enter the engine's fuel injection system. Generally speaking, for every 1000 meters increase in altitude, the output pressure of the pump may need to be increased by 0.05-0.1MPa. In high-altitude areas above 4000 meters, the pressure requirement for lifting the pump may be 0.2-0.3 MPa higher than in plain areas. At the same time, due to the thin air, the combustion process of the engine may not be complete, producing more carbon deposits and exhaust gases, which also poses a challenge to the reliability and durability of the lifting pump. Therefore, lift pumps used in high-altitude areas should not only have high pressure output capacity, but also have good anti pollution and self-cleaning capabilities to ensure stable operation in harsh working environments.

3. Compatibility with other parts
  The lift pump in the fuel system of Perkins diesel engines does not work in isolation, but works in conjunction with other components such as fuel filters and high-pressure fuel pumps. It is crucial to improve the matching between the pump and fuel filter. The function of a fuel filter is to filter impurities and moisture from diesel and protect the engine's fuel system. If the flow rate of the pump is increased too much, exceeding the filtering capacity of the fuel filter, it will cause some impurities to be unable to be effectively filtered and directly enter the high-pressure fuel pump and injection system, accelerating the wear of these components and reducing their service life; On the contrary, if the flow rate of the lift pump is too small to meet the normal working requirements of the fuel filter, it will cause the internal pressure of the fuel filter to be too low, affecting the filtering effect and even leading to filter blockage. Therefore, when selecting a lift pump, it is necessary to choose the appropriate flow rate lift pump based on the specifications and filtering capacity of the fuel filter to ensure a good match between the two. The matching between the lifting pump and the high-pressure oil pump cannot be ignored. The high-pressure fuel pump is responsible for pressurizing the fuel to a sufficiently high pressure so that the fuel can be accurately injected into the combustion chamber of the engine through the injector. The output pressure and flow rate of the pump must match the input requirements of the high-pressure oil pump. If the output pressure of the booster pump is insufficient to meet the oil suction demand of the high-pressure oil pump, it will cause the high-pressure oil pump to work unstably, affecting the accuracy and uniformity of fuel injection, thereby reducing the power performance and fuel economy of the engine; If the output pressure of the lift pump is too high, exceeding the bearing range of the high-pressure oil pump, it may damage the high-pressure oil pump. Therefore, when choosing a lift pump, full consideration should be given to its compatibility with the high-pressure fuel pump to ensure the efficient and stable operation of the entire fuel system.

Why Chose Us

Contact Us