【正文】 .......................344． 高速電磁轉(zhuǎn)換開關(guān) .......................................35第五章 柴油機(jī)的其他電控系統(tǒng) ......................................37 可變噴嘴渦輪增壓系統(tǒng)電控技術(shù) ................................375．2 可變氣門區(qū)動系統(tǒng) ...........................................385．2．1 可變氣門驅(qū)動機(jī)構(gòu)在柴油機(jī)上的應(yīng)用 ......................385．2．2 可變氣門驅(qū)動機(jī)構(gòu)的實現(xiàn) ................................395．3 柴油機(jī)的廢氣再循環(huán)控制 .....................................41結(jié)論 .............................................................43致謝 .............................................................44附錄 1............................................................45附錄 2............................................................46參考文獻(xiàn) .........................................................47IIContentsAbstract .....................................................................................................................IIThe first chapter diesel electronic control technology ...........................................1 The development and current situation of diesel electronic control system ......1 Technical characteristics and difficulties of diesel electronic control technology................................................................................................................2 Development trend in the future of diesel electronic control technology..........3Chapter 2 design of diesel engines unit....................................................................5 The structure of electronic control diesel and calibration technique .................5 Diesel electronic control system and electric power source support design......7 Commonly used input and output circuit design in diesel electronic control system ......................................................................................................................9 Electronic control unit (ECU) input stage .................................................10 Electronic control unit input stage.............................................................12 The output channel of the quantity of switch value and the power amplifier..14Chapter 3 sensor in diesel electronic control system............................................20 Accelerator pedal position sensor ....................................................................20 Contactless (hall) accelerator pedal position sensor..................................20 Pressure pickup ................................................................................................22 Piezoresistance pressure transducer ..........................................................223．3 Thermistor temperature sensor ......................................................................24 Within the engine temperature turn circuit used frequency ....................25 Temperature measurement and alarm system design of diesel electronic IIIcontrol system.....................................................................................................26Chapter 4 diesel electric fuel injection system and actuator ...............................28 Control principle of diesel electric fuel injection system ................................28 Spray driving circuit ..................................................................................29 Electronic fuel injection system in converter parameters on the performance of the injector .............................................................................................................31 DCDC converter parameters influences on erformance of the injector ...31 PWM control circuit ..................................................................................32 Converting base of Electricity – machine........................................................344． Highspeed solenoid switch ....................................................................35Chapter 5 Other electronic control system of Diesel.........................................37 Variable nozzles turbocharging system Electronic control technology...........375．2 Variable valve system ...................................................................................385．2．1 The application of Variable valve driving mechanism in Diesel ........385．2．2 Realization of Variable valve driving mechanism ..............................395．3 Emission control of Diesel engine ................................................................41Conclusion................................................................................................................43Thanks ......................................................................................................................44Appendix 1 ..........................................................................................................45Appendix 2 ..........................................................................................................46References ................................................................................................................470第一章 柴油機(jī)電子控技術(shù)柴油機(jī)電控技術(shù)源于上世紀(jì)八十年代，首先應(yīng)用的是燃油噴射系統(tǒng)的電子控制。如Wart Si la、MAN Bamp。MAN Bamp。我國對柴油機(jī)電子控制技術(shù)的研究起步較晚，多家單位對車用柴油機(jī)高壓共軌系統(tǒng)進(jìn)行了研究。與此同時在 20 世紀(jì) 80 年代中期采用電控技術(shù)、增壓技術(shù)和三元催化器使汽油機(jī)的燃油經(jīng)濟(jì)性和升功率有了進(jìn)一步提高，HC、CO、和 NO 的排放量均可滿足日趨嚴(yán)格的排放法規(guī)要求?？刂迫蝿?wù)從簡單到復(fù)雜逐步發(fā)展起來。電控單元在硬件方面相似在整車管理系統(tǒng)的軟件方面也很近似。因此柴油機(jī)電控技術(shù)的關(guān)鍵是執(zhí)行器,也即是電控柴油噴射機(jī)構(gòu), 各個國家都在致力于開發(fā)研制各種類型的電控柴油噴射機(jī)構(gòu), 以尋求最佳方案, 這也是柴油電控技術(shù)的難點所在。2)電控標(biāo)定系統(tǒng)的硬件設(shè)計。目前在國外，發(fā)動機(jī)電控系統(tǒng)的優(yōu)化標(biāo)定方法越來越多地采用自動優(yōu)化標(biāo)定方法，2這樣可以縮短標(biāo)定周期，降低標(biāo)定費用，同時能得到更好的標(biāo)定結(jié)果。 柴油機(jī)電控技術(shù)未來的發(fā)展趨勢能源危機(jī)，環(huán)境污染，使人們對柴油機(jī)的經(jīng)濟(jì)性、有害排放、可靠性提出了更高的要求，這需要多種改進(jìn)措施，對柴油機(jī)進(jìn)行高精度、全工況的優(yōu)化控制。高壓噴射可提高燃油經(jīng)濟(jì)性，顯著地減少微粒和煙度；合理地控制噴油定時和噴油量可減少NOx和HC排放；電控燃油噴射系統(tǒng)能根據(jù)發(fā)動機(jī)工作要求實現(xiàn)噴油量、噴油定時、噴油壓力以及噴油速率的綜合控制，在滿足排放法規(guī)的同時獲得最佳的經(jīng)濟(jì)性。(3)改善可靠性。獨立的噴射壓力控制，傳統(tǒng)柴油機(jī)的供油系統(tǒng)的噴射壓力與柴油機(jī)3的轉(zhuǎn)速負(fù)荷有關(guān)。高噴射壓力、獨立的噴射壓力控制、小噴孔、高平均噴油壓力等措施都能降低燃油消耗率，從而提高了柴油機(jī)的燃油使用經(jīng)濟(jì)性。(5)可變的預(yù)噴射控制能力預(yù)噴射可以降低顆粒排放，又不增加NOx排放，還可改善柴油機(jī)冷啟動性能、降低冷態(tài)工況下白煙的排放，降低噪聲，改善低速扭矩。當(dāng)供油系統(tǒng)具有預(yù)噴射能力后將會使控制小油量的能