Case of internal grinding wheel for Injector
As the “heart” of the car, the engine plays a key role in the overall performance of the car, and the fuel injector is one of the key components of the engine. Its working quality will seriously affect the performance of the engine. The main function of the fuel injector is to completely atomize the fuel and evenly distribute it to the entire fuel chamber, and fully mix it with the compressed air in the cylinder to obtain good combustion. As one of the key components of the engine, if the fuel injection nozzle is not working properly, it will cause severe carbon deposits in the cylinder; accelerated wear of the cylinder barrel and piston rings will cause unstable idling, increased fuel consumption, weak acceleration, difficulty in starting and excessive emissions, which can lead to serious It will completely block the fuel injector and damage the engine. As a precision component of automobiles, fuel injectors have high-precision process requirements.
The fuel injection system, commonly known as the oil pump nozzle, is known as the heart of the diesel engine. The needle valve, plunger, and oil outlet valve are its three major parts. The processing accuracy is extremely high and it is very difficult to grind.
As the “heart” of the car, the engine plays a key role in the overall performance of the car, and the fuel injector is one of the key components of the engine. Its working quality will seriously affect the performance of the engine. The main function of the fuel injector is to completely atomize the fuel and evenly distribute it to the entire fuel chamber, and fully mix it with the compressed air in the cylinder to obtain good combustion. As one of the key components of the engine, if the fuel injection nozzle is not working properly, it will cause severe carbon deposits in the cylinder; accelerated wear of the cylinder barrel and piston rings will cause unstable idling, increased fuel consumption, weak acceleration, difficulty in starting and excessive emissions, which can lead to serious It will completely block the fuel injector and damage the engine. As a precision component of automobiles, fuel injectors have high-precision process requirements.
The fuel injection system, commonly known as the oil pump nozzle, is known as the heart of the diesel engine. The needle valve, plunger, and oil outlet valve are its three major parts. The processing accuracy is extremely high and it is very difficult to grind.
The fuel injection process of the fuel injector:
1. Fuel passes through the hole in the needle valve body and pours into the high-pressure oil gun installed above the needle valve seat in the fuel injector.
2. The fuel pressure in the injection pipe acts on the cone surface of the needle valve. The pressure rises until it overcomes the pressure of the spring and lifts the needle valve from the valve seat. High-pressure fuel is sprayed into the engine at high speed atomization.
3. When the fuel injection pump has finished delivering fuel, the pressure on the cone surface drops, and the spring force pushes the needle valve to seat, cutting off the power of the fuel engine.
Moresuperhard center hole seat surface grinding CBN internal grinding wheel is suitable for center hole seat surface grinding of fuel injection nozzles. It is a high-precision grinding product used for grinding the center hole and seat surface of workpieces. The product has good grinding consistency and a processing accuracy of 2.0 Within microns, it has successfully replaced imported grinding wheels and can be customized and tested.
Features of vitrified CBN grinding pins for injector:
The ceramic CBN internal grinding wheel has good heat dissipation during the grinding process, does not burn the workpiece, has a large grinding ratio, is easy to trim, and has a long service life.
Recently, we had a Turkish customer who asked us for a grinding solution for injector workpieces. We provided the customer with a set of grinding solutions:
| Machine | ULTRA(BAHMULLER) |
|
Dimensions of grinding wheel |
Hole : 1A1W 4×6×2×14.5×M2 |
Seat：1A1W–Z/60°3.3×9×1.5×23.5×M2 |
|
| Speed of grinding wheel | Hole: 95000 RPM |
| Seat:85000 RPM | |
| Grinding allowance | Hole: Ф0.02~0.03mm |
| Seat:Ф0.1~0.15mm | |
| Dressing method | Sintered diamond dresser |
| Dressing period | Hole： 8pcs |
| Seat: 6pcs | |
| Workpiece material | 18CrNi8 HRC≥57 |
