1. EJBR4701D Diesel Injection Technical Support
1.1.EJBR04701D Diesel Injection Part Number Location
E.g.：See the diesel injection part number as follows:
Pic No.1
| No. |
Name |
| A |
brand, logo, part number,
series number |
| B |
nozzle part number |
2.EJBR04701D Diesel Injection Technical Support
2.1.EJBR04701D Diesel Injection Application Scenarios
Common rail system is an oil supply method refers to the fuel oil from the fuel tank sucked out by the gear pump through the oil-water separator and the gear pump to Fuel fine filter, high-pressure pump, common rail pipe, and diesel injection, all together with the closed-loop fuel supply system composed of sensors and ECU that completely separates the generation of injector pressure and the injector process from each other.
| No. |
Name |
No. |
Name |
No. |
Name |
No. |
Name |
| 1 |
Tank |
5 |
Common Rail
Pressure Sensor |
9 |
Engine Crankshaft Sensor |
A |
High Pressure Oil Circuit |
| 2 |
Fuel Filter |
6 |
Common Rail Pipe |
10 |
Camshaft Sensor |
B |
Low Pressure Oil Circuit |
| 3 |
High-Pressure Pump |
7 |
Diesel Injection |
11 |
ECU Electronic Control Unit |
/ |
/ |
| 4 |
Fuel Gear Pump |
8 |
Accelerator Pedal |
/ |
/ |
/ |
/ |
3.EJBR04701D Diesel Injection Installation Precautions
- The replacement of the diesel injectormust strictly follow the electrical system, the approved pressure of the low-pressure fuel intake system, the approved pressure of the high-pressure fuel circuit system, and fuel system replacement consumables requirements (including the low-pressure fuel circuit system filter and the high-pressure fuel circuit) specified in the vehicle engine maintenance manual;
- Replacement of wearing parts of the fuel system, cleaning requirements for the connection between the fuel system and the diesel injector, the fitting clearance of the fuelinjector connection, the installation angle and tightening torque of the diesel injector, the fitting clearance of the intake system, and the fitting clearance of the exhaust system to ensure the service life of the engine and the normal operation of the diesel injector.
- When installing thediesel injector on the engine, it is necessary to clean the engine block, cylinder head and other parts connected to the fuel injector, and ensure that there is no dust, carbon deposits, water, rust spots, etc.
- Before installing, check whether the diesel injectornozzle gasket has been replaced and installed on the diesel injector.
- When installing the diesel injector, apply lubricant between the diesel injector, fuel nozzle sealing gasket and O-ring.
- Failure to replace the gasket with a new one may result in:deformation of the tight cap of nozzle, deformation of nozzle, deformation of nozzle orifice, oil leakage and air leakage, which will cause serious damage to the diesel injector and nozzle to break and cause damage to the engine.
- When installing the diesel injectoron the engine, please carefully check the components related to the installation of the diesel injector, such as the diesel injector pressure plate, screw, diesel injector rod and other accessories are not deformed, and install it in strict accordance with the operation steps of the engine maintenance manual.
- It is forbidden to operate the bare diesel injectorfor a long time in an environment with serious dust pollution and corrosion to iron products.
- It is forbidden to operate the bare diesel injectorfor a long time in a strong magnetic field environment.
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