The development and study of the engine electronic control technology , which is regarded as one important method to reduce the exhaust emissions and improve the power and economy performance , is paid more and more attention 發(fā)動機(jī)電控技術(shù)作為降低發(fā)動機(jī)排氣污染,提高其動力性和經(jīng)濟(jì)性的一個重要手段,它的研究和開發(fā)越來越受到人們的重視。
The key of the engine electronic control is to develop the hardware and software of ecu . the need of more accutive control for the vehicle electronics is satisfied gradually through the gradual development of the hardware and software 汽油機(jī)電子控制的關(guān)鍵技術(shù)是汽油機(jī)電子控制單元( ecu )的軟件、硬件的開發(fā),通過對其硬件電路和軟件程序的不斷改進(jìn),逐步滿足汽車電子各方面更加精確控制的要求。
Research made in this thesis is the primary but important step in developing the actual controller , but the key point is the bringing forward and the experience on a new methodology , thus can support the future work with theory and software . by doing this , we can understand and master the design steps , preselect and optimize the controller ' s parameters , shorten the developing time , so will absolutely has great positive effects on the diesel engine electronic control engineering 本文的研究是開發(fā)實(shí)用的柴油機(jī)控制器的前期工作,更重要的是提出和實(shí)踐了一種較為先進(jìn)的設(shè)計(jì)思路,可為后續(xù)的研究提供軟件和理論的支持及方法論的指導(dǎo),從而進(jìn)一步認(rèn)識和掌握發(fā)動機(jī)控制器的設(shè)計(jì)步驟,方便地進(jìn)行控制器參數(shù)的優(yōu)化,縮短其開發(fā)周期,也必然對柴油機(jī)電控技術(shù)的發(fā)展起到積極的作用。
This paper discusses the designing and making of the dynamic testing systems of engine electronic control system . base on the construction and operation principle of santana 2000gsi m3 . 8 . 2 engine electronic control systems , design and manufacture led circuit of dynamic testing and fault imitating electronic control unit . on the inspect board , design and equip with motronic 3 . 8 . 2 ecu i / o measuring joints , design and set up obd - ii diagnostic communication link , design and install fuel pressure inspecting meter . depend on the obd - ii diagnostic communication link and ecu i / o measuring joints , this dynamic testing system can inspect engine electronic fuel injection system , distributorless ignition system , idle speed control system and evaporative emission control system , and can inspect m3 . 8 . 2 sensors , ecu and actuators , and can interrogate fault memory and erase fault memory ; and can analyse data stream ; and can carry out fault imitating . besides , this paper analyses sensors and actuators typical fault w aves 2電控單元電路連接器設(shè)計(jì)制成輸入輸出電子控制檢測端子,并在檢測面板上布置了obd -診斷插座和燃油壓力表。使該動態(tài)測試系統(tǒng)能實(shí)現(xiàn)對電噴發(fā)動機(jī)的燃油系統(tǒng)、直接點(diǎn)火系統(tǒng)、怠速控制系統(tǒng)和燃油蒸氣排放控制系統(tǒng)的動態(tài)檢測;并通過obd -診斷座、 ecu輸入輸出檢測端子和故障模擬處理單元實(shí)現(xiàn)對電噴發(fā)動機(jī)電控系統(tǒng)各傳感器、電控單元、執(zhí)行器進(jìn)行故障碼讀取與清除;動態(tài)數(shù)據(jù)讀取和波形測試和故障模擬等。此外,本論文還分析了傳感器和執(zhí)行器典型故障波形。