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挖掘機電噴發動機故障排除方法

2020/8/27

EFI發動機故障(zhang)的(de)排除方法挖(wa)掘機鏟EFI發動機故障(zhang)排除步(bu)驟，現代汽(qi)車的(de)系(xi)(xi)(xi)(xi)統(tong)(tong)的(de)電(dian)子(zi)控制系(xi)(xi)(xi)(xi)統(tong)(tong)的(de)自(zi)(zi)我診(zhen)斷(duan)功能都配備有自(zi)(zi)診(zhen)斷(duan)系(xi)(xi)(xi)(xi)統(tong)(tong)中，ECU的(de)自(zi)(zi)診(zhen)斷(duan)系(xi)(xi)(xi)(xi)統(tong)(tong)主要用于檢測(ce)所(suo)述(shu)電(dian)子(zi)控制的(de)各(ge)個部(bu)件工作(zuo)的(de)系(xi)(xi)(xi)(xi)統(tong)(tong)。挖掘機維修最重(zhong)要的三個(ge)參數：操作重(zhong)量(liang)（質量(liang)），發動機(ji)功(gong)率和(he)鏟斗斗容(rong)。挖掘機修理最初挖(wa)掘(jue)(jue)機(ji)是手動(dong)(dong)的，從發明到現在已(yi)經有一百三十多(duo)年了，期間經歷了由(you)蒸汽驅(qu)動(dong)(dong)斗回(hui)轉挖(wa)掘(jue)(jue)機(ji)到電力驅(qu)動(dong)(dong)和(he)內燃機(ji)驅(qu)動(dong)(dong)回(hui)轉挖(wa)掘(jue)(jue)機(ji)、應用機(ji)電液一體化技術的全自動(dong)(dong)液壓挖(wa)掘(jue)(jue)機(ji)的逐步(bu)發展過程。修理挖掘機常(chang)(chang)(chang)(chang)見(jian)的(de)(de)(de)(de)(de)挖(wa)掘機(ji)結構(gou)包(bao)括，動(dong)(dong)(dong)(dong)(dong)力(li)裝置(zhi)(zhi)，工(gong)(gong)作裝置(zhi)(zhi)，回轉機(ji)構(gou)，操縱機(ji)構(gou)，傳(chuan)動(dong)(dong)(dong)(dong)(dong)機(ji)構(gou)，行(xing)走機(ji)構(gou)和(he)輔(fu)(fu)助(zhu)設施等。自診(zhen)斷系統(tong)(tong)(tong)(tong)具有以下功(gong)能(neng)：故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)檢(jian)(jian)測①電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子控制(zhi)系統(tong)(tong)(tong)(tong)。 ②存儲在(zai)ECU單元(yuan)的(de)(de)(de)(de)(de)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)存儲。 ③提示(shi)(shi)(shi)駕駛員ECU檢(jian)(jian)測到故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)，應(ying)(ying)(ying)小(xiao)(xiao)心駕駛。 ④啟(qi)用(yong)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)保護(hu)功(gong)能(neng)，確(que)保車輛的(de)(de)(de)(de)(de)安(an)全運行(xing)。 ⑤幫助(zhu)維修人員排(pai)除(chu)(chu)(chu)(chu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)，提供(gong)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)排(pai)除(chu)(chu)(chu)(chu)信息。其次，診(zhen)斷步驟供(gong)給(gei)系統(tong)(tong)(tong)(tong)發生故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)，例如，應(ying)(ying)(ying)由(you)工(gong)(gong)作油(you)壓表檢(jian)(jian)查(cha)系統(tong)(tong)(tong)(tong)，EFI發動(dong)(dong)(dong)(dong)(dong)機(ji)油(you)系統(tong)(tong)(tong)(tong)通常(chang)(chang)(chang)(chang)為0.25MPa，如油(you)壓低(di)于(yu)預定(ding)值時(shi)，檢(jian)(jian)查(cha)油(you)泵，壓力(li)調節器和(he)工(gong)(gong)作的(de)(de)(de)(de)(de)窮人線(xian)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣控制(zhi)系統(tong)(tong)(tong)(tong)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)檢(jian)(jian)查(cha)下列步驟：清(qing)除(chu)(chu)(chu)(chu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)癥(zheng)狀(zhuang)代(dai)(dai)(dai)碼(ma)(ma)校驗碼(ma)(ma)以確(que)認相同的(de)(de)(de)(de)(de)代(dai)(dai)(dai)碼(ma)(ma)擊穿碼(ma)(ma)的(de)(de)(de)(de)(de)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)狀(zhuang)況的(de)(de)(de)(de)(de)癥(zheng)狀(zhuang)再檢(jian)(jian)查(cha)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)顯(xian)示(shi)(shi)(shi)癥(zheng)狀(zhuang)所指(zhi)(zhi)示(shi)(shi)(shi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)正(zheng)常(chang)(chang)(chang)(chang)碼(ma)(ma)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)不(bu)是(shi)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)是(shi)指(zhi)(zhi)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)仍然存在(zai)顯(xian)示(shi)(shi)(shi)，在(zai)另一(yi)個的(de)(de)(de)(de)(de)衰竭癥(zheng)狀(zhuang)的(de)(de)(de)(de)(de)點(dian)沒有顯(xian)示(shi)(shi)(shi)出正(zheng)常(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)代(dai)(dai)(dai)碼(ma)(ma)首先被(bei)顯(xian)示(shi)(shi)(shi)的(de)(de)(de)(de)(de)正(zheng)常(chang)(chang)(chang)(chang)碼(ma)(ma)的(de)(de)(de)(de)(de)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)歷史(shi)顯(xian)示(shi)(shi)(shi)癥(zheng)狀(zhuang)，不(bu)顯(xian)示(shi)(shi)(shi)正(zheng)確(que)診(zhen)斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)的(de)(de)(de)(de)(de)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)，但癥(zheng)狀(zhuang)沒有顯(xian)示(shi)(shi)(shi)的(de)(de)(de)(de)(de)一(yi)個正(zheng)常(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)的(de)(de)(de)(de)(de)存在(zai)沒有診(zhen)斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)已被(bei)消除(chu)(chu)(chu)(chu)1讀(du)(du)(du)取(qu)靜態模(mo)式和(he)清(qing)除(chu)(chu)(chu)(chu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)碼(ma)(ma)。 2.確(que)認癥(zheng)狀(zhuang)。 3.癥(zheng)狀(zhuang)模(mo)擬(ni)。 4.動(dong)(dong)(dong)(dong)(dong)態故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)檢(jian)(jian)查(cha)。該電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)的(de)(de)(de)(de)(de)檢(jian)(jian)查(cha)。 6.部(bu)件檢(jian)(jian)查(cha)。 7.調整設置(zhi)(zhi)，激活(huo)或(huo)維護(hu)。 8.測試(shi)試(shi)驗。挖(wa)掘機(ji)EFI發動(dong)(dong)(dong)(dong)(dong)機(ji)的(de)(de)(de)(de)(de)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)診(zhen)斷，音(yin)符1，禁止(zhi)使用(yong)的(de)(de)(de)(de)(de)高(gao)功(gong)率設備(bei)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣控制(zhi)單元(yuan)，以避免無(wu)線(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)干擾。 2，前接地線(xian)從(cong)所述電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池移除(chu)(chu)(chu)(chu)時(shi)，第一(yi)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)碼(ma)(ma)讀(du)(du)(du)取(qu)在(zai)ECU。 3，修復燃料系統(tong)(tong)(tong)(tong)中(zhong)，第一(yi)油(you)壓被(bei)釋放。如圖4所示(shi)(shi)(shi)，除(chu)(chu)(chu)(chu)去插塞和(he)連(lian)接器線(xian)或(huo)元(yuan)件之前，點(dian)火開關必須放置(zhi)(zhi)在(zai)ON位置(zhi)(zhi)。其次，清(qing)除(chu)(chu)(chu)(chu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)讀(du)(du)(du)取(qu)方法(fa)(fa)(fa)1.制(zhi)備(bei)：①張緊停車制(zhi)動(dong)(dong)(dong)(dong)(dong)器，在(zai)中(zhong)性(xing)的(de)(de)(de)(de)(de)傳(chuan)輸。由(you)發動(dong)(dong)(dong)(dong)(dong)機(ji)控制(zhi)系統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)目視檢(jian)(jian)查(cha)②方法(fa)(fa)(fa)全面檢(jian)(jian)查(cha)。 ③檢(jian)(jian)查(cha)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓值應(ying)(ying)(ying)大于(yu)11V以上。 ④起動(dong)(dong)(dong)(dong)(dong)發動(dong)(dong)(dong)(dong)(dong)機(ji)怠速(su)(su)時(shi)，發動(dong)(dong)(dong)(dong)(dong)機(ji)達到正(zheng)常(chang)(chang)(chang)(chang)工(gong)(gong)作溫(wen)度(du)。 ⑤關閉所有的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子控制(zhi)系統(tong)(tong)(tong)(tong)和(he)輔(fu)(fu)助(zhu)設備(bei)。 ⑥檢(jian)(jian)查(cha)發動(dong)(dong)(dong)(dong)(dong)機(ji)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)指(zhi)(zhi)示(shi)(shi)(shi)符是(shi)正(zheng)常(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)。 2，故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)讀(du)(du)(du)取(qu)和(he)結算方法(fa)(fa)(fa)：①靜態代(dai)(dai)(dai)碼(ma)(ma)讀(du)(du)(du)取(qu)方法(fa)(fa)(fa)。打(da)開點(dian)火開關，用(yong)短跳(tiao)線(xian)端(duan)子TEL診(zhen)斷和(he)E1，根(gen)據檢(jian)(jian)查(cha)燈閃(shan)爍(shuo)，故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)讀(du)(du)(du)取(qu)。 ②的(de)(de)(de)(de)(de)讀(du)(du)(du)取(qu)動(dong)(dong)(dong)(dong)(dong)態方法(fa)(fa)(fa)。關閉點(dian)火開關，跳(tiao)線(xian)短接端(duan)子TE2和(he)El的(de)(de)(de)(de)(de)診(zhen)斷。打(da)開點(dian)火開關，檢(jian)(jian)查(cha)燈應(ying)(ying)(ying)快速(su)(su)閃(shan)爍(shuo)。然后路(lu)(lu)(lu)(lu)(lu)試(shi)中(zhong)，車速(su)(su)比10公里每小(xiao)(xiao)時(shi)不(bu)是(shi)更少(shao)。路(lu)(lu)(lu)(lu)(lu)試(shi)，然后將跳(tiao)線(xian)E1電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)話短路(lu)(lu)(lu)(lu)(lu)端(duan)子經診(zhen)斷，故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)讀(du)(du)(du)取(qu)依法(fa)(fa)(fa)CHECK指(zhi)(zhi)示(shi)(shi)(shi)燈閃(shan)爍(shuo)。 ③清(qing)除(chu)(chu)(chu)(chu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)代(dai)(dai)(dai)碼(ma)(ma)。故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)排(pai)除(chu)(chu)(chu)(chu)后，應(ying)(ying)(ying)清(qing)除(chu)(chu)(chu)(chu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)碼(ma)(ma)。如果該信號是(shi)外部(bu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)的(de)(de)(de)(de)(de)預定(ding)范圍時(shi)，系統(tong)(tong)(tong)(tong)確(que)定(ding)該診(zhen)斷信號線(xian)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)。
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