【正文】 d is dai soon the hour main oil road is hydraulicpneumatic high, explain the main oil road adjust to press valve or solar division powerful families exsits breakdown。The up slope hour have no dint, launching the machine turn to run high soon very high. (2) break down the reason The liquid presses the oil oil too low。Clutch or system move the machine seals pletely a damage causes leak the oil。t rise 2 files and superspeed file。Adjust soon the machine oil road leaks the oil。The check car spreads to feel soon machine。Outputting the stalk ascends to adjust soon the machine passes in and out the oil bore seals pletely turn damage。Decline the file switch short circuit pulsory。At D hour car can39。Choosing the file hand handle adjusts not appropriate. (3) expel the method The check adjusts to choose the file hand handle the main oil in file in headway road hydraulicpneumatic too low( the main oil in elucidation road is hydraulicpneumatic low), dismantle the automatic gearbox , replace the headway file oil on the road to seal pletely everywhere check goes forward the file clutch, if rub the slice burns the or wears away the excessiveness should the main oil road is hydraulicpneumatic with go forward the clutch all normal, should dismantle the go forward single the direction oversteps the clutch. That automatic gearbox in have no exclusion to exceed the speed limit the file to break down (1) break down the phenomenon 河北工程大學(xué)設(shè)計(jì)說明書 (論文 ) ]] 9 The car drives the inside, can39。Exceeding the speed limit the electromagism valve breaks down。The liquid presses the oil temperature spreads to feel the machine breaks down。At OFF hour, exceed the speed limit the file switch order and should shut to match, instructioning the light should be to exceed the speed limit the file electric circuit or replace to exceed the speed limit the file switch otherwise. The check exceeds the speed limit the work circumstance of the file electromagism to light the fire switch, do not start to launch the machine, press the O/ the switch of D, exceed the speed limit the file electromagism valve should have the coalescence have no the coalescence voice, should check to control the electric circuit or replace the electromagism valve. Use to raise to rise the machine raise the vehicle, making fourwheeler to launch the machine, make the gearbox of auto worked in the file of D, check the automatic gearbox to rise the file circumstance while having no the appearance of can rise the person exceed the speed limit the file, and the car is soon normal, elucidation control system work is can39。t drive. (2) break down the reason Choosing the file hand handle adjusts not appropriate。The control system electric circuit breaks down。Check control the system is each to connect the line carries 河北工程大學(xué)設(shè)計(jì)說明書 (論文 ) ]] 13 the sub electric voltage. That have no breakdown exclusion to launch the mechanism to move (1) break down the phenomenon The car drives the inside, winning an election the file hand handle locate 2,1 or S, L file, loosen to open the pedal of acceleration, launch the machine turn to decline to the soon, but the car decelerates the unknown showing。2 file pulsory the system moves the machine beats slippery or low file and pour the file system move the machine beats slippery。The oil consumes the aggrandizement. (2) break down the reason Lock the electromagism valve breaks down。If the control system have no breakdown, then should replace to change the machine of. The can39。Decline the file electromagism valve short circuit or break the road pulsory。 (2)故障原因 發(fā)動(dòng)機(jī)怠速過高；節(jié)氣門拉線或節(jié)氣門位置傳感器調(diào)整不當(dāng)，主油路油壓高；升檔過遲；真空式節(jié)氣門閥真空軟管破損；主油路調(diào)壓閥故障，使主油路油壓過高；減振器活塞卡住，不起減振作用；單向閥球漏裝，制動(dòng)器或離合器接合過快；換檔組件打滑；油壓電磁閥故障；電控單元故障。如果怠速時(shí)主油路油壓高，說明主油路調(diào)壓閥或節(jié)氣門閥存在故障；如果怠速油壓正常，而起步?jīng)_擊大，說明前進(jìn)離合器、倒檔及高檔離合器的進(jìn)油單向閥損壞或漏裝。 檢查油壓電磁閥的工作是否正常；檢查電控單元在換檔瞬間是否向油壓電磁閥發(fā)出控制信號(hào)。 河北工程大學(xué)設(shè)計(jì)說明書 (論文 ) ]] 18 (3)排除方法 檢查液壓油油面高度和油的品質(zhì)；若液壓油變色或有燒焦味，說明離合器或 制動(dòng)器的摩擦片燒壞，應(yīng)拆檢自動(dòng)變速器。若在 3 檔時(shí)打滑，原因?yàn)榈箼n及高檔離合器故障。 在前進(jìn)檔或倒檔都打滑，說明主油路油壓低。 (2)故障原因 節(jié)氣門拉線或節(jié)氣門位置傳感器調(diào)整不當(dāng)；調(diào)速器存在故障；調(diào)速器油路漏油；車速傳感器故障； 2 檔制動(dòng)器或高檔離合器存在故障；換檔閥卡滯或檔位開關(guān)故障。如果控制系統(tǒng)無故障，應(yīng)拆檢自動(dòng)變速器，檢查換檔執(zhí)行組件是否打滑，用壓縮空氣檢查各離合器、制動(dòng)器油缸或活塞有無泄漏。檢查、調(diào)整節(jié)氣門拉線或節(jié)氣門位置傳感器，測(cè)量節(jié)氣門位置傳感器電阻，如不符合標(biāo)準(zhǔn)應(yīng)更換。采用真空式節(jié)氣門閥的自動(dòng)變速器，應(yīng)用減少節(jié)氣門閥推桿長(zhǎng)度的方法進(jìn)行調(diào)整。此時(shí)應(yīng)拆檢自動(dòng)變速器，檢查調(diào)速器固定螺釘是否松動(dòng)，調(diào)速器油路密封環(huán)是否損壞，閥芯是否卡滯或磨損過度。 (2)故障原因 前進(jìn)離合器打滑；前進(jìn)單向超越離合器打滑；前進(jìn)離合器油路泄漏；選檔手柄調(diào)整不當(dāng)。檢查前進(jìn)檔離合器，如果摩擦片燒損或磨損過度應(yīng)更換。 (3)排除方法 對(duì)電控系統(tǒng)自動(dòng)變速器應(yīng)進(jìn)行故障診斷，檢查有 無故障碼輸出。在 ON 位時(shí)，超速檔開關(guān)觸點(diǎn)應(yīng)斷開，指示燈不亮；在 OFF 位時(shí)，超速檔開關(guān)觸點(diǎn)應(yīng)閉合，指示燈應(yīng)亮。若無接合聲音，應(yīng)檢查控制電路或更換電磁閥。如果不能升人超速檔是因?yàn)槌僦苿?dòng)器打滑，所以在有負(fù)荷情況下不能升人超速檔。 (2)故障原因 選檔手柄調(diào)整不當(dāng)；倒檔油路泄漏；倒檔及高檔離合器或低檔及倒檔制 河北工程大學(xué)設(shè)計(jì)說明書 (論文 ) ]] 21 動(dòng)器打滑。 如果倒檔油路油壓正常，應(yīng)拆檢自動(dòng)變速器，更換損壞的離合器或制動(dòng)器摩擦片或制動(dòng)帶。 測(cè)量節(jié)氣門位置傳感器；測(cè)量車速傳感器。 (3)排除方法 對(duì)電控自動(dòng)變速器進(jìn)行故障診斷。 檢查控制發(fā)動(dòng)機(jī)制動(dòng)作用的電磁閥是否存在故障。 液力變矩器離合器無鎖止故障的排除 (1)故障現(xiàn)象 汽車行駛中，車速、檔位已經(jīng)滿足離合器鎖止條件，但鎖止離合器仍沒有鎖止作用；油耗增大。 (2)故障原因 節(jié)氣門拉線或節(jié)氣門位置傳感器調(diào)整不當(dāng)；強(qiáng)制降檔開關(guān)損壞；強(qiáng)制降檔電磁閥短路或斷路；強(qiáng)制降檔閥卡滯。如果加速踏板踩到底時(shí)，強(qiáng)制降檔開關(guān)觸點(diǎn)沒有閉合，可用手動(dòng)開關(guān)。