The Bosch fuel injector 0445110917 is a common rail diesel fuel injector used in various diesel engines, particularly in European vehicles. Here’s what you need to know about it:

Part Number: 0445110917 (Bosch OEM)

Type: Common Rail Solenoid Injector

Application: Used in multiple diesel engines, including some from Volkswagen, Audi, Skoda, Seat, and others.

Compatible Vehicles:

• VW/Audi Group (1.9 TDI, 2.0 TDI, etc.)

• Some Mercedes-Benz & BMW diesel models (verify compatibility before purchase)

  The Bosch fuel injector 0445110917 is a solenoid-controlled common rail diesel injector designed for high-pressure direct injection systems. Below are its key structural characteristics:

• 1. Main Components & Structure

• A. Nozzle Assembly (Injection Tip)

• Multi-hole nozzle (typically 5-7 precision-drilled holes) for fine fuel atomization.

• Needle valve controlled by hydraulic pressure and solenoid actuation.

• Tight sealing to prevent fuel leaks when closed.

• B. Solenoid Actuator

• Electromagnetic coil that opens the injector when energized.

• Fast response time (typically <1 ms) for precise fuel metering.

• High-force actuation to overcome rail pressure (up to 2,000+ bar in some systems).

• C. Control Valve (Hydraulic Servo System)

• Two-stage operation:

• Solenoid opens a pilot valve, releasing control chamber pressure.

• Hydraulic pressure lifts the needle for fuel injection.

• Precision-machined surfaces for minimal leakage.

• D. High-Pressure Connections

• Common rail inlet (for high-pressure fuel supply).

• Leak-off return line (returns excess fuel to the tank).

  Sealing washers & O-rings (copper crush washer for rail connection, Viton seals for leak-off).

• 2. Material Composition

  Body & Nozzle Holder: High-strength steel (hardened for durability).

  Needle & Nozzle: Wear-resistant alloys (e.g., tungsten carbide-coated).

  Solenoid Core: Ferromagnetic materials for rapid magnetic response.

  Seals: High-temperature-resistant polymers (Viton, PTFE).

• 3. Key Functional Features

• High-Pressure Tolerance: Designed for 1,600–2,500 bar rail pressure.

• Precision Fuel Metering: Microsecond-level injection timing control.

• Multi-Injection Capability: Supports pilot, main, and post injections for cleaner combustion.

• Integrated Filter: Some models include a micro-filter to protect the nozzle.

• Maintenance Tips

• Use ultra-low-sulfur diesel (ULSD) to prevent deposits.

• Replace fuel filters regularly to avoid contamination.

• Clean injectors professionally (ultrasonic cleaning for severe deposits).