Fuel Injection Components
Injectors, nozzles, injection pumps, unit pumps, high-pressure lines, rails and lift pumps for mechanical and electronically controlled diesel engines.
Features
- Injectors are tested on a bench for opening pressure and spray pattern rather than judged from engine symptoms.
- Common rail systems demand clean fuel and correct secondary filtration, and repeat injector failures usually trace back to water or filtration.
- Some electronically controlled injectors carry a calibration code that must be written to the control unit after fitting.
- High-pressure lines are not reused on common rail systems, because the sealing cone deforms on first tightening.
- Exchange and remanufactured units are available where a full new injector set is out of proportion to the machine's remaining hours.
Specifications
| Figure | Typical range | Unit | Why it matters |
|---|---|---|---|
| Injection system | mechanical / unit injector / common rail | Determines part family and handling. | |
| Rail pressure | 1 200 - 2 000 | bar | Filtration and line requirements. |
| Nozzle code | as marked on the existing nozzle | Spray pattern must match the combustion chamber. | |
| Supply form | new / remanufactured exchange | Cost against remaining machine life. | |
| Calibration code required | yes / no | Decides whether a diagnostic session is needed on fitting. |