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BOSCH Fuel Pressure Control Valve 0281002507/0281002625
FUNCTION
1. Metering & Flow Control: This system regulates the volume of fuel returning to the common rail via high-frequency opening and closing operations. It ensures that, regardless of fluctuations in engine speed or load, the pressure within the common rail remains consistently at the target value set by the ECU. If an injector were to seize, the rail pressure would surge instantaneously, potentially leading to the rupture of high-pressure lines; conversely, if the fuel return flow is excessive, insufficient rail pressure results, leading to a decline in engine power.
2. Multi-Stage Injection: *Pilot Injection* initiates combustion early, thereby mitigating the combustion shock during the main injection phase and significantly reducing engine noise. *Main Injection* is the primary phase that determines the engine's torque and power output. *Post Injection* involves injecting a small quantity of fuel after the main injection to elevate exhaust temperatures; this serves to facilitate the regeneration of the Diesel Particulate Filter (DPF) or to reduce nitrogen oxide (NOx) emissions.
3. High-Pressure Atomization: The finer the fuel atomization, the more uniformly the fuel mixes with air, resulting in more complete combustion. This improvement in combustion efficiency directly leads to reduced fuel consumption and lower emissions. Furthermore, complete combustion minimizes carbon deposits within the cylinders and reduces the accumulation of soot on the piston crowns.
Performance Advantages
| Comparison Dimension | 0281002507 (Classic) | 0281002625 (Upgraded) | Performance Advantage (02625 vs. 02507) |
|---|---|---|---|
| Drive Technology | Traditional High-Speed Solenoid | Piezo Actuator (or Optimized Solenoid) | 3x Faster Response: 02625 response time is only 50-100μs, enabling micro-liter injection with significantly higher control precision. |
| Rail Pressure Control Precision | Linear regulation, higher fluctuation | Non-linear optimized regulation, minimal fluctuation | Stable Idling: 02625 regulates return oil more delicately at low/idle speeds, eliminating vibrations and reducing noise. |
| Multi-Stage Injection Capability | 3-stage (Pre, Main, Post) | 5-stage (including Auxiliary Post) | Softer Combustion: 02625 supports micro pre-injection, significantly reducing cold start noise and knock risk. |
| Atomization Quality | Standard atomization, 4-hole nozzle | Optimized atomization, 4-5 holes, precise angle | Better Combustion: 02625 atomizes finer particles (<15μm), reducing fuel consumption by 3-5% and cutting black smoke. |
| Drip Control | Occasional dripping | Near-zero dripping (tight seal closure) | Reduced Carbon Buildup: 02625 closes faster, preventing post-injection fuel from diluting engine oil or clogging the DPF. |
DETAILS
| DESCRIPTION | Fuel Pressure Control Valve | PART NUMBER | 0281002507/0281002625 |
| WEIGHT |
0.7KG |
VOLUME | 200 mm x 60 mm x 60 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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