電流模式DC/DC轉換技術於電容式放電點火電路的應用

Applied the Current Mode DC/DC Converter Technology to the Capacitor Discharge Ignition Circuit

盧信宏(Shin-Hong Lu)

指導教授 ： 曾清標

崑山科技大學/工程學院/電子工程研究所/碩士(2009年)

摘要

現在由於單晶片微電腦技術與電子電路的純熟發展，使得在機車引擎電子點火技術上獲得更為廣泛的應用，進而取代了傳統機械式與類比電路式點火方式。為了提高引擎的效能與動力的提升、和改善引擎燃燒所排放的廢氣，所以開發出可變式點火角度的數位式電子點火系統。
　　現今機車所使用的點火系統大致上有分成CDI，TPS，和ECU三種；CDI(Capacitor Discharge Ignition)電容放電式點火系統，是現在最被廣泛應用在機車上的點火系統，能夠隨著引擎轉速的改變來控制點火的時間。TPS(Throttle Position Sensor)節流閥位置感知器，此裝置可以提供油門的即時資料來跟引擎轉速等資料作比較判斷當時引擎的負荷狀態，調整引擎的點火進角，來獲得較佳的燃燒效率，獲得較高的動力，並能達到省油的效果，但是成本比CDI來的高。ECU(Electronic control unit)電子控制單元或稱引擎控制(Engine Control Unit)是三種點火控制系統裡成本最高，被應用在最新的噴射系統機車。
本研究主要是以電容放電式點火系統為主，採用八位元單晶微電腦，讀取曲軸轉速信號和凸輪軸基準信號透過預先載入的引擎動力特性曲線與微電腦的智慧型判斷，來對引擎的點火角度進行控制。

關鍵字

電流模式

並列摘要

Now as a result of single-chip micro-computer technology and the skilled electronic circuit development of the electronic ignition engine in the locomotive was a wider range of technical applications, which replaced the traditional mechanical ignition circuit and the analog mode. In order to improve engine performance and power improvement, and improve the combustion engine emissions, so the development of the ignition point of the variable digital electronic ignition system.
Locomotive used in the present ignition system is divided into large, have CDI, TPS, and the ECU three Species; CDI (Capacitor Discharge Ignition) capacitor discharge ignition system is now the most widely used in the ignition system on the locomotive, able to change with the engine speed to control the ignition timing. TPS (Throttle Position Sensor) throttle position sensor, this device can provide real-time information to throttle with the engine speed information for comparison to determine engine load condition at the time, adjusting the engine ignition into the corner to get a better combustion efficiency to obtain a higher power, and to achieve the effect of fuel-efficient, but the cost of high CDI. ECU (Electronic control unit), said electronic control unit or engine control (Engine Control Unit) is the ignition control system for three years the cost of the highest, was used in the latest injection system locomotive.
The purpose of this study is based on capacitor discharge ignition systems and the use of 8 bit single-crystal microcomputer octet read camshaft crankshaft rotational speed signal and reference signal through the pre-loading characteristics of the engine power curve and intelligent micro-computer to determine, to the engine control of the ignition point of view.

並列關鍵字

Current mode

參考文獻

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