Liwei M0031P145 Diesel Injector Nozzle – Narrow-Angle High-Penetration Component for Deep-Bowl Combustion Chambers
1. Product:M0031P145
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
In large-bore diesel engines – those with cylinder diameters exceeding 90 mm – the distance between the injector nozzle and the piston bowl wall is substantial, requiring a fuel spray with sufficient penetration to reach the combustion zone without losing momentum. The Liwei M0031P145 is a precision-ground nozzle engineered with a narrow 145° spray angle – 5° narrower than the industry-standard 150° – specifically calibrated for deep-bowl combustion chambers where a more directed, higher-velocity fuel plume is required to achieve complete air utilisation. This nozzle features a 7-hole configuration with 0.180 mm diameter orifices and a static flow of 760 cc/min at 100 bar, a specification that positions it as a high-efficiency component for 2.0L to 2.2L diesel engines with aggressive swirl ratios and deep piston bowls – including certain Peugeot/Citroën 2.0/2.2 HDi variants, early Ford Duratorq 2.0L engines, and Toyota D-4D applications with high-swirl combustion geometries. The defining metric of the M0031P145 is its spray tip penetration – a 10% increase over nozzles with 150° spray angles at identical rail pressures – ensuring the fuel reaches the bowl's outer radius before the combustion event concludes.
█ Application Coverage – Deep-Bowl Diesel Platforms
The M0031P145 is designed to replace nozzles in the following common rail injector families:
Bosch CRI 2.0 – Injectors with 7-hole × 0.180 mm nozzle geometry, including 0445110414, 0445110415, and similar part numbers
Denso G2 / G3 – Injectors with 7-hole × 0.180 mm configuration in high-swirl applications
Vehicle Applications – Peugeot/Citroën 2.0/2.2 HDi (early DW10 variants), Ford 2.0 Duratorq (pre-2005), Toyota 2.0 D-4D, Opel 1.7/2.0 CDTi, and certain Asian-market diesel platforms
The nozzle is a direct replacement for Bosch part numbers 0445110414, 0445110415, and Denso nozzles with the 7 × 0.180 mm configuration. It is supplied as a bare nozzle – the needle and nozzle must be lapped together during assembly to achieve the 3–5 micron clearance.
▐ Technical Specifications – Dimensional and Flow Data
| Parameter | Specification |
|---|---|
| Nozzle Type | Inward-opening, differential pressure |
| Number of Holes | 7 |
| Orifice Diameter | 0.180 mm |
| Spray Angle | 145° |
| Needle Diameter (guide) | 4.0 mm |
| Needle-to-Nozzle Clearance | 3 – 5 µm |
| Material | High-speed steel (M42-grade) |
| Surface Coating | DLC (diamond-like carbon) on guide, 1.2 µm |
| Surface Hardness | 60 – 64 HRC |
| Surface Finish (guide) | Superfinished (Ra ≤ 0.08 µm) |
| Max. Rail Pressure Compatibility | 1,800 bar (26,100 psi) |
| Hydraulic Opening Pressure | 215 ± 10 bar |
| Static Flow @ 100 bar | 760 cc/min |
| Spray Penetration (at 1,600 bar) | 48 mm (vs. 44 mm for 150° nozzles) |
| Seat Angle | 60° (conical) |
| Seat Diameter | 3.6 mm |
| Needle Lift | 0.20 mm |
| Matching Requirement | Lapped to specific injector body |
◆ Construction Details – Deep-Bowl Optimisation
→ 145° Narrow Spray Angle: Provides 10% greater spray penetration, delivering fuel to the outer radius of deep-bowl combustion chambers.
→ M42 High-Speed Steel: Manufactured from cobalt-containing steel, providing hot hardness up to 650°C.
→ DLC Coating: The needle guide receives a 1.2 µm diamond-like carbon coating, reducing friction and extending service life.
→ Superfinished Guide Surface: The guide is superfinished to Ra ≤ 0.08 µm, ensuring smooth needle movement.