The Bosch diesel injector with part number 0445110944 is a common rail fuel injector used in various diesel engines. Here’s some key information about it:

Applications (Common Vehicles):

• Volkswagen (VW) / Audi / Skoda / Seat:

• Used in some 1.6 TDI (CR) and 2.0 TDI (CR) engines.

• Other European Diesel Models with Bosch common rail injection systems.

Key Features:

• Type: Piezoelectric or solenoid-operated (depending on variant).

• Pressure Range: Typically used in high-pressure common rail systems (up to 1800+ bar).

• Compatibility: Must match the exact engine calibration; coding may be required when replacing.

Common Issues:

• Clogging / Nozzle Deposits: Can cause poor spray pattern, misfires, or rough idle.

• Leaking Injectors: May lead to fuel dilution in oil or hard starts.

• Electrical Failures: Wiring or solenoid issues can trigger fault codes.

Replacement Notes:

• Coding Required: Many modern diesel injectors need coding to the ECU using a diagnostic tool (e.g., VCDS, Bosch KTS, or dealer software).

• Sealing Washers/O-rings: Must be replaced during installation to prevent leaks.

  The Bosch diesel fuel injector (0445110944) is a high-precision component in common rail diesel systems. Below is a breakdown of its structure and key features:

• 1. Structure of the Bosch 0445110944 Injector

• The injector consists of several critical components, each playing a role in fuel delivery:

• A. Nozzle Assembly (Spray Tip)

• Multi-hole nozzle (typically 5-8 holes) for precise fuel atomization.

• Tight tolerances (µm-level precision) to ensure optimal spray pattern.

• Sac volume design (mini-sac or VCO – Valve Covered Orifice) to reduce emissions.

• B. Solenoid or Piezo Actuator (Depending on Model)

• Solenoid-controlled injectors use an electromagnetic coil to open/close the needle.

• Piezo injectors (faster response) use piezoelectric crystals for ultra-precise fuel metering (though 0445110944 is typically solenoid-driven).

• C. Hydraulic Servo System

• Control piston & pressure chamber for needle lift regulation.

• High-pressure fuel inlet (connected to the common rail).

• Leakage return line (returns excess fuel to the tank).

• D. Electronic Control Components

• Integrated ECU connector for receiving signals from the engine control unit.

• Wiring harness with high-temperature-resistant insulation.

• E. Mechanical Components

• Spring-loaded needle valve for quick closure.

• Pressure-balanced design to handle 1800+ bar rail pressures.

• Precision shims for calibration adjustments.