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Development of Integrated ECU and Investigation of Simulation System for Small EFI Engine

Author: HanJiFeng
Tutor: HuChunMing
School: Tianjin University
Course: Power Machinery and Engineering
Keywords: small EFI engine integrated ECU programmable equipment hardware-in-loop simulation gasoline engine model
CLC: TK417
Type: Master's thesis
Year: 2010
Downloads: 97
Quote: 0
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Abstract


Facing the aggravating energy crisis and environment pollution, the emission regulations for small gasoline engine are increasingly stringent. EFI technology is the most direct and effective means to solve the problem of high fuel consumption and heavy pollution which following small gasoline engine. with the increasingly severity of the market competition, the development cycle must be shortened and costs must be reduced. There must be an advanced development platform and miniaturize the EFI system in order to speed up process, reduce costs and improve security.Basing on the research status and development trend of the small EFI gasoline engine, the development of integrated ECU and design of hardware-in-loop simulation system of ECU for small EFI engine are studied in this paper. The main contents of this paper are shown as below.1. A low cost integrated ECU is designed according to the request of EFI system of small gasoline engine,. The integration and miniaturization of ECU, throttle body, TMAP sensor and TPS are realized, and the ECU is water-proof and shock- proof. The MCU of the ECU is the 16-bit MCU XC2785X104F80L of Infineon. The power and driver IC is L9177 which is highly integrated. Furthermore the TPS is designed with a linear hall sensor so there is no friction. By using modular circuit2. The programmable equipment and software for calibration of variable conditions of EFI engine are designed. It is based on high-torque stepping motor, high-performance motor driver and motion control card. The software can control the motion of throttle required and response quickly. It is only need 56ms to control the throttle form 0% to 100%. It is very useful in reducing the development difficulty of EFI system and improving its calibration quality effectively.3. A low cost hardware-in-loop simulation system for the ECU of small EFI engine is developed and established. The hardware is base on 8-bit MCU XC888CLM of Infineon. The software is programmed with C language and compiled with Keil. The control interface is developed by Labview. The gasoline engine model is simulated by MATLAB/SIMULINK and is converted to C code to ensure the real-time processing ability of SMC. The functions of the simulation ECU include sending cam shaft signal, crank shaft signal, switch signal and the simulative sensor signals to the target ECU, and measuring the fuel injection signal, ignition signal and switch signal of the target ECU, and the CAN bus communication is accomplished at the same time.

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Gasoline > Run test
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