Electronic Throttle Body 4H239F991BC 4H23-9F991-BD LR006142 For Land Rover

Product Specification

Electronic Throttle Body 4H239F991BC 4H23-9F991-BD LR006142 For Land Rover

1.Vehicle Compatibility Table

    Please note that part compatibility can vary based on vehicle production date and market region. This table is compiled from available data, but before purchase and installation, it is essential to verify the final fit using your Vehicle Identification Number through a professional parts catalog or by consulting your supplier.

2. Vehicle Compatibility

• Primary Applications: Designed specifically for certain Land Rover models, typically compatible with:

  • Land Rover Range Rover Sport - specific model years with the 3.0L supercharged petrol engine, among others.

  • Land Rover Discovery - corresponding model years sharing the same platform and engine.

  • Note: Always verify fitment for your specific model year and engine code using official parts catalogs or professional repair systems, as ECU software can vary between model years.

3. Product Overview (Features)

• OEM Quality: A high-quality replacement part built to original equipment specifications, ensuring perfect integration with the vehicle's Engine Control Unit (ECU) and performance.

• Precision Engineering: Utilizes high-accuracy sensors and a durable DC motor for precise throttle opening control and fast response.

• Robust Construction: The housing, often made from aluminum alloy, offers excellent heat dissipation and structural strength. The internal gear mechanism is designed for reliability.

• Integrated Design: Combines the drive motor, position sensors, throttle valve, and control circuitry into a single, compact unit for a streamlined installation.

4. Technology

• Core Components: Includes a DC motor, two high-precision throttle position sensors (for redundancy and safety), a return spring, and a gear reduction mechanism.

• Signal Type: Receives a Pulse Width Modulation (PWM) signal from the ECU to control the motor and returns two analog voltage signals to report the real-time valve position.

• Operating Voltage: Typically operates on the standard 12V vehicle electrical system.

5. Principle of Operation
Its working principle is "electronic drive, feedback control":

1. Command Reception: The driver presses the accelerator pedal, and the pedal position sensor sends this signal to the engine ECU.

2. Integrated Calculation: The ECU synthesizes this signal with other data (engine speed, coolant temperature, air conditioning load, etc.) to calculate the optimal throttle opening.

3. Motor Actuation: The ECU sends a control current to the throttle body's DC motor, which actuates the throttle valve plate to the target angle via a gear set.

4. Real-Time Feedback: The position sensors continuously monitor the actual throttle plate angle and send this data back to the ECU.

5. Closed-Loop Adjustment: The ECU compares the actual opening with the target opening and continuously fine-tunes the motor current, creating a closed-loop control system for precise positioning.

6. Purpose

• Core Function: To precisely regulate the volume of air entering the engine's combustion chambers. This is a critical factor determining engine power output, fuel economy, and emissions.

• Driving Experience: Enables smooth idling, responsive acceleration, and linear power delivery.

• System Integration: As an actuator of the engine management system, it works in concert with features like cruise control, traction control (TCS), and electronic stability control (ESC) for coordinated vehicle dynamics management.