Bosch 0445110574 CRI 2.0 Injector – The Reliable Baseline for Ford Duratorq & GM/Opel CDTi Diesel Engines
1. Product:0445110574
2. Compatible Equipment: Diesel Fuel Injection Systems
3. Manufacturer: Aftermarket OEM Replacement
4. Condition: Brand New, Fully Tested
5. Origin: ABOSEDE Diesel
6. Shipping period: 3-5 business days
7. Payment terms: T/T, Western Union, PayPal
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Product Introduction
While many diesel technicians focus primarily on static flow rates and rail pressure limits when evaluating common rail injectors, the Bosch 0445110574 distinguishes itself through a less visible but equally critical attribute: actuation repeatability. This CRI 2.0-generation injector maintains an opening delay of 230 µs ± 5% across its entire service life – a tolerance that ensures the ECU's injection timing commands are translated into hydraulic events with minimal drift. In common rail systems, where rail pressure is regulated by the high-pressure pump, the injector's consistent response directly determines the stability of the air-fuel ratio during transient load changes. The 0445110574 is factory-calibrated for a maximum rail pressure of 1,800 bar (26,100 psi) with a static flow of 950 cc/min at 100 bar, placing it in the mid-flow tier of Bosch's solenoid injector portfolio. Its defining specification, however, is the holding current stability – the injector maintains a consistent magnetic force during the PWM-controlled holding phase, ensuring that the nozzle needle remains seated between injection events without unintended after-dribble, a common issue in earlier CRI designs that contributes to particulate emissions and nozzle coking.
█ Application Coverage – Ford, Opel, and the Euro 4/5 Diesel Era
The 0445110574 is a widely deployed injector across multiple European platforms from the Euro 4 and early Euro 5 emissions era:
Ford – 2.0L Duratorq (engine codes G6DE, G6DG, G6DD, QXWA, QXWB) in Focus Mk2, Mondeo Mk4, Galaxy, S-Max, and Transit 2.0
GM/Opel – 2.0L CDTi (engine codes Z20DTH, Z20DMH, Z20DTR) in Vectra, Signum, Zafira, Astra, Insignia
Saab – 2.0L TiD (engine code D223L) in 9-3, 9-5
Fiat – 2.0L JTDm in some applications
The injector's 7-hole nozzle with 0.190 mm diameter orifices and 150° spray angle provides a droplet SMD of approximately 23 µm – coarser than the 0.185 mm injectors used in higher-pressure systems, but offering improved resistance to clogging in EGR-heavy urban cycles. It directly replaces Bosch part numbers 0445110575, 0445110576, and 0445110577, as well as Ford OEM number 4M5Q-9K546-CA and GM number 55189513.
◼ Technical Specifications – Electrical and Hydraulic Parameters
| Parameter | Specification |
|---|---|
| Maximum Rail Pressure | 1,800 bar (26,100 psi) |
| Actuator Type | Solenoid CRI 2.0 |
| Coil Resistance (20°C) | 0.80 – 0.95 Ω |
| Peak Pull-in Current | 18 A |
| Holding Current (PWM) | 5.5 – 6.0 A |
| Static Flow @ 100 bar | 950 ± 30 cc/min |
| Nozzle Holes / Diameter | 7 × 0.190 mm |
| Spray Angle | 150° |
| Needle Lift | 0.23 mm |
| Hydraulic Opening Pressure | 220 bar |
| Leak-off Rate (new, idle) | ≤ 20 ml/min |
| Max. Engine Speed | 5,000 rpm |
| Solenoid Inductance | 2.1 mH |
The 2.1 mH inductance, slightly higher than the 0445110601's 2.0 mH, results in a marginally slower pull-in (230 µs vs. 220 µs) but provides a more stable holding current, reducing the risk of unintended needle movement during the PWM-hold phase – a characteristic valued in applications requiring stable low-load combustion.
◆ Construction Features – The Hydraulic Damping Mechanism
The CRI 2.0 architecture incorporates a hydraulic damping chamber integrated into the injector body, which absorbs pressure waves generated by the solenoid armature closing. This chamber, a calibrated volume of approximately 0.8 mm³, prevents secondary needle bounce that can cause unintended after-injection – a phenomenon that contributed to particulate emissions in earlier CRI designs:
→ DLC-Coated Needle Guide: The nozzle needle receives a 1.2 µm DLC (diamond-like carbon) coating, providing a hardness of 2,200 HV and reducing friction with the guide bore. This coating is particularly effective in EGR-equipped engines, where soot particles would otherwise accelerate wear on the uncoated guide surfaces found in earlier injectors.
→ Sintered Stainless Steel Inlet Filter: The 20 µm nominal pore size filter is permanently integrated into the fuel entry port, protecting the precision needle-nozzle pair from particulates. This filter is non-serviceable and requires a 5 µm absolute filter upstream to maintain the rated service life.
→ Nickel-Plated Solenoid Housing: The solenoid housing is nickel-plated to resist corrosion from fuel seepage and under-hood moisture – a detail that extends the service life in coastal or humid climates.