汽油機(jī)輔助控制系統(tǒng) (2)ppt課件

1、怠速控制安裝節(jié)氣門直動(dòng)控制式旁通空氣控制式步進(jìn)電動(dòng)機(jī)調(diào)理機(jī)構(gòu)旋轉(zhuǎn)電磁閥調(diào)理機(jī)構(gòu)占空比電磁閥控制機(jī)構(gòu)真空電磁閥控制機(jī)構(gòu) (a)節(jié)氣門直動(dòng)式 (b)旁通空氣方式 怠速控制執(zhí)行機(jī)構(gòu)的空氣控制方式 1節(jié)氣門； 2節(jié)氣門支配臂；3執(zhí)行元件 節(jié)氣門直動(dòng)控制安裝 1節(jié)氣門支配臂；2怠速執(zhí)行器；3、6節(jié)氣門；4噴油器；5調(diào)壓器；7防轉(zhuǎn)孔；8彈簧；9電動(dòng)機(jī)； 10、11、13齒輪；12傳動(dòng)軸；14絲杠 步進(jìn)電機(jī)怠速控制 1閥座；2閥軸；3定子線圈；4軸承；5進(jìn)給絲杠機(jī)構(gòu)；6旁通空氣進(jìn)口；7閥步進(jìn)電機(jī)與怠速控制閥做成一體，裝在進(jìn)氣總管內(nèi)。電機(jī)可順時(shí)針或逆時(shí)針旋轉(zhuǎn)，使閥沿軸向挪動(dòng)，改動(dòng)閥與閥座之間的間隙，調(diào)理流過節(jié)

2、氣門旁統(tǒng)統(tǒng)道的空氣量。該種怠速控制閥還可用來控制發(fā)動(dòng)機(jī)的快怠速，而不需求輔助空氣閥。步進(jìn)電機(jī)的控制電路步進(jìn)電機(jī)的控制電路步進(jìn)電機(jī)的轉(zhuǎn)動(dòng)方向可經(jīng)過改動(dòng)4個(gè)定子線圈的通電順序來實(shí)現(xiàn)。轉(zhuǎn)子一周分為32個(gè)步級(jí)進(jìn)展，每個(gè)步級(jí)轉(zhuǎn)動(dòng)一個(gè)爪的角度，即11.25(普通步進(jìn)電動(dòng)機(jī)為2到125個(gè)步級(jí))。 步進(jìn)電機(jī)式怠速控制機(jī)構(gòu)1怠速控制閥；2穩(wěn)壓箱；3節(jié)氣門體；4空氣流量計(jì) 旋轉(zhuǎn)電磁閥怠速控制機(jī)構(gòu)1閥；2雙金屬帶；3冷卻水腔；4閥體；5線圈；6永久磁鐵；7線圈L2；8軸；9旁通口；10固銷；11擋塊；12桿 占空比控制型電磁閥構(gòu)造1彈簧；2磁化線圈；3軸；4閥；5殼體；6波紋管；7傳感器；8進(jìn)氣總管；9節(jié)氣門真空電

3、磁閥怠速控制機(jī)構(gòu)氧化鋯氧傳感器及其輸出特性氧化鋯氧傳感器及其輸出特性a a構(gòu)造構(gòu)造b b輸出特性輸出特性11 法蘭法蘭22鉑電極鉑電極33氧化鋯管氧化鋯管44鉑鉑電極電極55加熱器加熱器 6 6涂層涂層77廢氣廢氣88套套管管99大氣大氣 給給ECU，用來確定實(shí)，用來確定實(shí)踐的空燃比。踐的空燃比。11二氧化鈦元件二氧化鈦元件22金金屬外殼屬外殼33陶瓷絕緣體陶瓷絕緣體 44接線端子接線端子55陶瓷元陶瓷元件件66導(dǎo)線導(dǎo)線77金屬維護(hù)金屬維護(hù)套套 (a) 剖面圖 (b) 外形圖 (c) 氣流走向 廢氣再循環(huán)閥構(gòu)造 可變廢氣再循環(huán)率系統(tǒng)1ECU；2節(jié)氣門開關(guān)；3廢氣再循環(huán)管路；4廢氣再循環(huán)閥；5定

4、壓閥；6真空控制電磁閥；7電磁閥 活性炭罐蒸發(fā)污染控制安裝1油箱蓋及真空泄放閥；2油箱；3單向閥；4蒸汽通氣管路；5廢氣再循環(huán)及炭罐控制電磁閥；6節(jié)氣門；7進(jìn)氣歧管；8真空室；9排放控制閥；10定量排放小孔；11活性炭罐只能在空氣室出口和進(jìn)氣門之間傳播，縮短了壓力波的傳播間隔，以滿足發(fā)動(dòng)機(jī)高速工況下的氣體動(dòng)力增壓要求。 (a) 翻開 (b) 封鎖 動(dòng)力閥控制系統(tǒng) 1真空室；2真空電磁閥；3ECU(ECCS)； 4單向閥；5動(dòng)力閥廢氣渦輪增壓控制系統(tǒng)任務(wù)原理圖1切換閥；2動(dòng)作器；3空氣冷卻器；4空氣濾清器；5ECU；6釋壓電磁閥水溫傳感器的任務(wù)和診斷原理圖 冷卻水溫度傳感器電路缺點(diǎn)OBD診斷座

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