機車噴射引擎管理系統之設計與驗證

Design and Verification for Engine Management System of EFI Scooter Engines

林信傳(Hsin-Chuan Lin)

指導教授 ： 吳浴沂

國立臺北科技大學/機電學院/車輛工程系所/碩士(2007年)

摘要

本論文主要建立一個完整機車噴射引擎控制策略平台，是從無到有的全新設計，用來發展與驗證引擎控制策略，很方便的將引擎控制策略於實車上實現，以改善機車引擎之油耗及污染排放，同時提升引擎之動力輸出。引擎管理系統主要分為引擎運轉模式判斷、引擎供油控制、點火控制、怠速控制、等四大部分。其中引擎運轉模式判斷主要是在定義引擎在不同運轉狀況下的條件。噴油控制則是讓引擎可以依據引擎的狀況，調整噴油所需之角度與噴油量。點火控制為控制引擎最佳點火角、充磁時間。怠速控制主要的控制為空燃比( , Air Fuel Ratio)、積碳、大氣壓力補償與點火角等等。 在軟硬體則是應用Mototron所開發ECU-based快速成型系統來設計引擎控制策略，同時配合The Mathworks, Inc.所推出的MATLAB/Simulink Model-Based作為控制策略發展平台。接著使用Mototune引擎調校工具在引擎動力計與底盤動力計上進行引擎點火與噴油參數調校，並測試實車加速性、油耗與引擎性能，最後經實驗結果驗證本論文引擎控制策略在穩態或暫態測試結果都能與原廠的性能幾乎一樣。

關鍵字

機車噴射引擎 ； 引擎管理系統 ； 引擎控制策略

並列摘要

The purpose of this thesis is to develop an engine management system (EMS) for scooter engine to improve fuel consumption and exhaust emissions. The proposed EMS is consisted of engine operation mode switch, fuel injection, ignition, and idle speed control (ISC) strategies. The engine operation mode switch strategy is used to judge current state of the engine, such as key on, run, idle, fuel cut off, etc. the fuel injection control strategy is designed to control the injection duration and start injection angle based on engine operation conditions, such as engine speed, intake manifold pressure, etc. The ignition control strategy is utilized to control the magnetization time and ignition timing at optimal operating points. The ISC strategy is employed to control the airfuel ratio, carbon deposition, ambient pressure compensation, ignition timing, etc. The Motortron is used as a hardware ECU for developing ECU-based rapid-prototype system and for designing engine control strategy. The MATLAB/Simulink Model-Based is employed as a control strategy development platform. Finally, the Mototune is utilized as an engine calibration tool to regulate the injection and ignition control parameters at engine dynamomoter and chassis dynamomoter. The preliminary experimental results show that the vehicle acceleration, fuel consumption and engine performance of the proposed algorithm including transient and steady state tests are close to the original performance of the scooter.

並列關鍵字

EFI scooter engines ； engine management system ； engine control strategy

參考文獻

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