High Efficiency Fuel Injection Pump 1 465 134 793 1465134793 Diesel Injector Pump Engine Parts

The manufacturing of high-pressure fuel injection pumps involves a series of complex and precise processes. The following are some common manufacturing processes:
1. Precision machining:
2. Processing of plungers and plunger sleeves: extremely high precision is required to ensure that the matching clearance between the two meets strict requirements, usually using grinding, honing and other processes.
3. Processing of oil outlet valves and valve seats: through turning, grinding and other methods, ensure sealing performance and precise opening pressure.
4. Heat treatment: quenching, tempering and other treatments are performed on key components such as plungers and cams to improve their hardness, strength and wear resistance.
5. Casting and forging: Larger components such as the outer shell of the oil pump may use casting processes to obtain complex shapes. Some parts with large forces, such as camshafts, may be forged to improve the density and strength of their internal organization.
6. Surface treatment: electroplating, chemical plating and other processes are used to provide corrosion resistance and wear resistance to the surface of parts. For example, chrome plating is performed on the surface of the plunger.
7. Assembly process: Assemble in a clean and constant temperature environment to ensure the installation accuracy and good fit of each component. Use special assembly tools and equipment to perform torque control and sealing tests.
8. Testing and quality control: Use three-coordinate measuring instruments, hardness testers, pressure testing machines and other equipment to test the size, hardness, pressure and other parameters of parts. Perform performance tests on the oil pump, including oil supply pressure, flow rate, injection timing, etc., to ensure that it meets the design requirements.For example, in the manufacture of plungers, the blank is first obtained by forging, then rough turning is performed, followed by heat treatment to increase hardness, and then precision grinding is performed to achieve the required size and surface roughness. During the assembly process, the screws are tightened according to the specified torque using a torque wrench. After the assembly is completed, the sealing test and performance test are performed. If there are unqualified products, they need to be reworked or scrapped.