本文選題：電控發(fā)動機 + 傳感器�。� 參考：《吉林大學》2016年碩士論文

【摘要】：隨著汽車電子控制信息技術的飛速發(fā)展,現(xiàn)代電控發(fā)動機內(nèi)部結構越來越復雜,面臨電控發(fā)動機故障的復雜性和信號的多變性,獲得準確故障參數(shù)和信息更加困難,發(fā)生的故障更加繁雜,意味著對電控系統(tǒng)故障維修診斷難度增加,對發(fā)動機診斷技術提出更高的要求,以往傳統(tǒng)單一的電控系統(tǒng)故障檢測診斷技術或維修方法無法滿足當前電控發(fā)動機故障維修診斷的需要,為提高電控發(fā)動機的檢測、診斷速度和維修水平,以實現(xiàn)快速、準確判斷發(fā)動機故障原因,將波形分析和故障診斷技術相結合應用到發(fā)動機故障診斷過程中具有重大的意義。本文以K3電控發(fā)動機(1.3L)為研究對象,對K3發(fā)動機常見的故障類型和故障原因進行闡述,對傳感器和執(zhí)行器的典型故障產(chǎn)生機理進行分析,按照發(fā)動機電控系統(tǒng)故障原因診斷程序和試驗方法,采用DISⅡ示波器、X431電腦故障診斷儀和K3發(fā)動機故障模擬試驗臺組建試驗平臺,利用示波器存貯多次測試的傳感器和執(zhí)行器正常和異常波形進行對比分析,重點針對傳感器和執(zhí)行器的幾個典型故障進行波形診斷分析研究,對執(zhí)行器和傳感器輸出的正常和異常波形以及記錄的故障現(xiàn)象進行分析,得出故障原因與波形異常變化之間的對應關系和規(guī)律,進而提出波形診斷分析技術在K3發(fā)動機故障診斷上應用的可行性。
[Abstract]:With the rapid development of automotive electronic control information technology, the internal structure of modern electronic control engine is becoming more and more complex, and it is more difficult to obtain accurate fault parameters and information because of the complexity of fault and the variability of signal. The faults occurred are more complicated, which means that it is more difficult for the maintenance and diagnosis of the electronic control system, and higher requirements for the engine diagnosis technology are put forward. In order to improve the detection, diagnosis speed and maintenance level of electronic control engine, the traditional single fault detection and diagnosis technology or maintenance method can not meet the need of fault maintenance diagnosis of electronic control engine. It is of great significance to accurately judge the cause of engine fault and apply waveform analysis and fault diagnosis technology to the process of engine fault diagnosis. In this paper, the common fault types and causes of K3 engine are described, and the typical fault generation mechanism of sensors and actuators is analyzed. According to the fault diagnosis program and test method of engine electronic control system, a test platform was constructed by using DIS 鈪，

本文編號：1908717