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HOWO T5G HOWO T7H TRUCK Bosch Rail Pressure Sensor 0281002332 used for weichai WP10/WP12 engine
FUNCTION
1. Real-time monitoring of high-pressure common rail fuel pressure: Directly installed on the high-pressure common rail, it continuously and accurately measures the fuel pressure within the rail, linearly converting the pressure value into an analog voltage signal, and feeding it back to the engine ECU in real time.
2. Providing a closed-loop control basis for the ECU: Based on the pressure data fed back by the sensor, the ECU dynamically adjusts the opening of the high-pressure fuel pump's metering unit, as well as the injection pulse width and timing of the injectors, ensuring that the common rail pressure remains stable at the target set value.
3. Achieving precise multi-stage injection and combustion optimization: Stable rail pressure enables precise control of fuel injection quantity/timing, supporting multi-stage injection such as pre-injection, main injection, and post-injection, resulting in strong engine power, reduced fuel consumption, and significantly reduced emissions of black smoke/particulate matter/NOx.
4. Providing fault protection and safety mechanisms: When the rail pressure is abnormal, the sensor outputs an abnormal voltage, and the ECU immediately enters protection mode to prevent: Overly high rail pressure, leading to common rail pipe rupture and injector damage; underly low rail pressure, causing starting difficulties, insufficient power, and injector dry running.
Advantages
| Item | Performance Advantage Description |
|---|---|
| Measurement Accuracy | Full-range ±1–2%, extremely precise rail pressure reading, ensuring accurate control of injection quantity and timing |
| Response Speed | <1 ms, real-time pressure feedback under transient conditions, smoother acceleration/deceleration response |
| Pressure Range | 0–2000 bar, withstands extreme high pressure, suitable for high-load operating conditions |
| Operating Temperature Range | -40°C to +130°C, stable performance in extreme high/low temperature environments |
| Waterproof & Dustproof Rating | IP67, fully sealed, dustproof and waterproof, reliable in dusty/rainy/snowy conditions |
| Service Life | 500,000–800,000 km under heavy-duty conditions, resistant to fatigue and corrosion |
Installation Location
On the Common Rail: Directly threaded into the dedicated sensor mounting port on the high-pressure common rail (Fuel Rail)-typically located at the center or end of the rail.
Engine Compartment Location: On the right side or top of the engine (depending on the WP10/WP12 layout), situated near the high-pressure fuel pump or common rail, where the electrical connector and threaded interface are easily visible.
DETAILS
| DESCRIPTION | Rail Pressure Sensor | PART NUMBER | 0281002332 |
| WEIGHT |
0.15KG |
VOLUME |
L=80 mm D=25 mm |
| 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 |
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