1108200-SA01

Product Name: Electronic accelerator pedal

Part Number: 1108200-SA01

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Product Details

Dongfeng Dignity IX5 Electronic Accelerator Pedal (Part No.: 1108200 - SA01)

The Electronic Accelerator Pedal (EAP) 1108200 - SA01 is a core control component in the powertrain system of the Dongfeng Dignity IX5 (mainly applicable to 2019 - 2023 models, matching 1.5T/2.0L engines). It replaces the traditional mechanical throttle cable, converting the driver’s "acceleration intention" into precise electronic signals to control the engine’s air intake and fuel injection, directly affecting the vehicle’s power response and fuel economy. Below is its detailed description:

1. Core Function & Vehicle Adaptability

Core Role

It serves as a "bridge" between the driver and the engine: when the driver steps on or releases the pedal, the component collects the pedal’s stroke and speed signals, transmits them to the Engine Control Unit (ECU) in real - time, and the ECU then adjusts the opening of the electronic throttle valve (or electronic control unit injector) to control the engine’s output power. Unlike mechanical pedals, it has no physical cable connection, realizing more accurate and flexible power control.

Adaptability Scope

Target Models: Mainly used for Dongfeng Dignity IX5, and compatible with some Dongfeng same - platform models (such as Dongfeng Forthing T5 EVO) equipped with the same powertrain.
Engine Matching: It is perfectly matched with Dongfeng’s self - developed 1.5T turbocharged engine (model: DK15C) and 2.0L naturally aspirated engine (model: DFMB20), and is compatible with the vehicle’s OBD (On - Board Diagnostics) system to support fault self - diagnosis.

Working Principle and Signal Transmission

The system operates via a fully electronic signal chain, eliminating mechanical losses and enabling rapid response with high precision:

Collection: When the driver depresses the accelerator pedal, the pedal arm rotates about its base hinge. A magnet integrated within the pedal arm moves relative to the Hall-effect sensor. This sensor converts the angular displacement of the pedalSignal Collection: When the driver depresses the accelerator pedal, the pedal arm rotates about the base hinge. A magnet integrated within the pedal arm moves relative to the Hall-effect sensor. This sensor converts the angular displacement of the pedal (corresponding to pedal stroke) into two independent analog voltage signals. These signals typically range from 0.5 V to 4.5 V and maintain a fixed 1:2 proportional relationship—for example, 0.5 V (corresponding to pedal stroke) into two analog voltage signals. These signals typically range from 0.5 V to 4.5 V and maintain a fixed 1:2 proportional relationship—for example, 0.5 V and 1.0 V at idle, and 4.5 V and 2.25 V at full actuation.

Signal Transmission: The generated voltage signals are transmitted through a dedicated wiring harness via a signal connector to the Engine and 1.0 V at idle, and 4.5 V and 2.25 V at full actuation.

Signal Transmission: The voltage signals are transmitted through a dedicated wiring harness via the signal connector to the Engine Control Unit (EC Control Unit (ECU). The transmission delay is ≤ 50 ms, ensuring no perceptible lag in powertrain response.

ECU Control: Upon reception, the ECU performs cross-validation of the two signalU). The transmission delay is ≤ 50 ms, ensuring no perceptible lag in powertrain response.

ECU Control: Upon reception, the ECU performs cross-validation of the two signal channels. If the deviation channels. If the deviation between them exceeds 10%, the system identifies a fault condition and activates "limp-home mode," which limits engine output for safety. Once validated, the ECU calculates the required throttle opening or fuel injection quantity based on real between them exceeds 10%, a fault condition is detected, and the vehicle enters "limp-home mode" to restrict engine output. Once validated, the ECU calculates the required throttle opening or fuel injection quantity based on real-time parameters such as engine-time parameters such as engine speed, load, and temperature, then issues control commands to the electronic throttle body or fuel injectors accordingly.

Pedal Reset: Upon release of the pedal by the driver, a return spring repositions the pedal arm to its initial rest position. The Hall sensor output returns to the idle-state voltage (0.5 V / 1.0 V), and the ECU adjusts the throttle to the idle opening angle.

1108200 - SA01Key Performance Parameters

These speed, load, and temperature, then issues control commands to the electronic throttle body or fuel injectors.

Pedal Reset: Upon release of the pedal by the driver, a return spring repositions the pedal arm to its initial state. The Hall specifications directly influence the pedal’s operational feel and long-term reliability:

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Key Performance Parameters

These specifications directly influence pedal responsiveness, driving feel5, minimizing driver fatigue associated with excessively short or extended strokes.

Signal Precision: Angular detection accuracy achieves an error margin of ≤ ±1%, ensuring a linear relationship between pedal input and engine power delivery, without abrupt, and operational reliability:

Pedal Stroke: The effective travel range—from idle to wide-open throttle—is 15–18 mm. This range aligns with ergonomic design principles for the Dignity IX5, minimizing driver jumps or perceptible delays during acceleration.

Response Time: The interval from pedal actuation to ECU signal validation is ≤ 50 ms—approximately 30% faster than conventional mechanical throttle systems, which suffer from cable stretch and friction-induced fatigue associated with excessively short or long strokes.

Signal Precision: Angular detection accuracy achieves an error margin of ≤ ±1%, ensuring a linear relationship between pedal input and engine power delivery, without abrupt jumps or noticeable delays during delays.

1108200-SA01