Shandong Shengyue Technology Development Co.,Ltd is one of the most professional sinotruk howo trucks common rail pressure sensor vg1034080003-1 45pp3-4 manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
SINOTRUK HOWO TRUCKS Common Rail Pressure Sensor VG1034080003-1 45PP3-4
FUNCTION
1. High-Pressure Fuel Accumulation: The high-pressure fuel pump continuously pumps diesel at extremely high pressure into the common rail. Thanks to its thickened alloy steel walls, the common rail temporarily stores this high-pressure fuel, ensuring that an ample supply of high-pressure fuel is available at all times to feed the injectors of each cylinder.
2. Real-Time Rail Pressure Monitoring: The sensor houses an extremely sensitive internal steel diaphragm. When the diesel pressure within the common rail undergoes even minute fluctuations, the diaphragm deforms, causing a corresponding change in its electrical resistance. The sensor is responsible for converting these dynamic pressure signals from the common rail into precise electrical signals.
3. System Overpressure and Safety Protection: Should an anomaly in the fuel system cause the pressure within the rail to surge abnormally, the 45PP3-4 sensor immediately transmits an "overpressure warning" to the ECU. The ECU then promptly limits engine speed, illuminates the malfunction indicator lamp, and may even forcibly cut off the fuel supply or trigger the pressure relief valve to open, thereby preventing the common rail from rupturing under excessive pressure or sustaining damage to the injectors.
DETAILS
| DESCRIPTION | Common Rail Pressure Sensor | PART NUMBER | VG1034080003-1 45PP3-4 |
| WEIGHT | 0.05 kg | VOLUME | 6.0 cm × 6.0 cm × 6.0 |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Common Faults and Diagnostic Methods
1. Measurement Range and Signal Output: This sensor utilizes a 3-pin connector. Under normal idling conditions, the voltage at the signal terminal typically ranges from approximately 1.0V to 1.5V; as the throttle is opened and rail pressure increases, the output voltage rises linearly to approximately 4.5V.
2. Common Fault Symptoms: The pressure limiting valve is forced open (resulting in a massive return flow of fuel through the return line and a lack of engine power); the dashboard illuminates the "Check Engine" light, and the vehicle enters a "limp-home" mode with restricted speed; difficulty starting the engine when cold, or severe lack of power.
3. Replacement Precautions: The rail pressure sensor is a high-pressure sealing component. Removal and installation procedures must be performed only after the engine has been completely shut down and there is no residual pressure remaining within the common rail. During installation, the sensor must be tightened strictly to the specified torque to prevent high-pressure diesel leaks, which could lead to a fire hazard.
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