0445110343
BOSCH 0445110343 for JAC Refine 4DA1 2.8L
1042200FA080, 0445110412F00VC01359DLLA150P18081600 barTechnical Specifications
| Specification | Value |
|---|---|
| INJECTOR TYPE | Common Rail Injector |
| SYSTEM PLATFORM | CRI |
| CONTROL VALVECore Spec | |
| NOZZLE CODECore Spec | |
| OPERATING PRESSURECore Spec |
Frequently Asked Questions
Which vehicle applications and engine models use Bosch common rail injector 0445110343?
Bosch 0445110343 is factory equipment on the JAC HFC 4DA1-2B1 2.8-liter turbocharged common rail diesel engine (Euro 4 and Euro 5 emissions). This powertrain powers commercial light-duty vehicles including the JAC Refine 2.8 CRDi MPV, JAC Shuailing light commercial truck, and JAC Junling commercial delivery truck. It is fully interchangeable with Bosch part number 0445110412 and JAC original equipment (OE) number 1042200FA080.
What internal sub-components (nozzle and control valve) are required to overhaul 0445110343?
Rebuilding the 0445110343 injector requires genuine Bosch sub-components: nozzle assembly 0433172102 (stamped DLLA150P1808) with a 150-degree spray pattern, and control valve set F00VC01359. Maintaining calibrated spring preload and valve lift tolerances is critical for meeting ISO 4008 multi-injection delivery targets at 1600 bar.
What are the hold-down clamp torque and copper washer specifications for JAC 4DA1 2.8L injectors?
Tighten the injector hold-down clamp bolt to 30 N·m in a smooth, continuous sequence. Always fit a new, annealed 1.50 mm copper combustion seal washer (OD 15.0 mm, ID 7.1 mm) under the nozzle seat. Torque the high-pressure fuel rail delivery line union nut to 25-30 N·m while counter-holding the injector inlet stud with a secondary backing wrench to prevent internal body deformation.
What are the back-leak flow limits and does 0445110343 require IMA calibration coding?
Yes, the Bosch CRI2.2 injector features an alphanumeric IMA calibration code stamped on the plastic electrical connector that must be programmed into the engine ECU to equalize cylinder delivery. Back-leak return flow must not exceed 15 ml during a 10-second starter crank test, 10 to 25 ml/min at 350 bar idle rail pressure, and 45 ml/min under maximum load at 1600 bar. Return rates above these limits indicate control valve seat erosion triggering fault code P0087.
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.