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汽車燃油供給系統(tǒng)故障檢測(cè)維修畢業(yè)設(shè)計(jì)論文-資料下載頁(yè)

2025-11-25 09:40本頁(yè)面

【導(dǎo)讀】隨著世界汽車整車產(chǎn)業(yè)的發(fā)展,汽車運(yùn)用技術(shù)的不斷成熟,人們對(duì)汽車的性能要求不斷的提高特別在燃油方面最為突出,人們大多喜歡采用節(jié)能環(huán)保的車型,針對(duì)這一發(fā)展趨勢(shì)汽車生產(chǎn)廠商必須在燃油供給方面下大功夫。并與實(shí)例結(jié)合分析燃油供給系統(tǒng)常出現(xiàn)故障進(jìn)行診斷排除。在汽車工業(yè)發(fā)達(dá)國(guó)家相繼制定了汽車燃油經(jīng)濟(jì)法規(guī),為解決節(jié)能環(huán)保與污染這一問題?! ∨艢庵械奶?xì)浠衔?,主要是由于氧氣不足和低溫激冷作用產(chǎn)生。當(dāng)a值大于1時(shí),混合氣因燃燒速度降低,而燃燒不完全即被排出,也使排氣中的HC含量增加?;旌蠚庠跉飧變?nèi)處于低溫區(qū)域時(shí),附在燃燒室壁表面的激冷層也會(huì)燃燒不完全而被排出。氮氧化合物是在混合氣燃燒過程中,空氣中少量的氮和氧在高溫條件下化合生成。其生成的數(shù)量與燃燒溫度,氧氣的濃度等因素有關(guān),燃燒溫度對(duì)NOx的生成影響很大,燃燒溫度高于1300℃開始生成NOx。隨著燃燒溫度升高,NOx生成量增加,氧氣濃度影響也很明顯,在使用濃混合氣時(shí)

  

【正文】 eaks in transmission and drive shaft and damage。(6) Check the battery acid is to meet the requirements, if necessary, add distilled water。(7) Check the engine cooling system antifreeze antifreeze liquid height and ability to replace them when necessary and conduct stress tests。(8) Check the engine hood lock, door hinges, door pull with the lubrication。(9) Check the front brake lining thickness.2. repair and maintenance(1) lubrication maintenance once per driving 7500km。(2) routine maintenance once every driving 15000km。(3) brake fluid every two years or mileage driving more than 50000km per replacement. maintenanceLubrication maintenance of the following major elements:(1) whether the visual motor oil, antifreeze, gasoline and air conditioning system leakage。(2) Check the cooling system antifreeze antifreeze liquid height and ability, if necessary, replacement, and stress tests。(3) lubrication of engine cover, and the lower part of the catch。(4) lubricant cover door hinge, door pull belt。(5) visual brake any leaks and damage。(6) Check the steering head of the space bar, fixed level and dust cover damage.A power steering system, hydraulic power steering system should also check whether the joint leakage。(7) Check the drive shaft dust cover for damage。(8) visual gearbox, main shaft, shaft jacket any leaks and damage。(9) Check the brake lining thickness.4. regular maintenanceIn addition to routine maintenance of the contents of the lubrication maintenance projects, there are the following items:(1) Check the lighting, warning flash devices, the performance of speaker。(2) Check wiper and washer system performance, where necessary, by adding washing fluid。(3) Check the clutch stroke, when the adjustment failed。(4) Check battery acid fluid levels, if necessary, filling of distilled water。(5) Check the static state of the Vbelt and tension degree, if necessary, tension or replaced。(6) cleaning the air filter housing and replace the filter。(7) the replacement of oil filter。(8) Check the exhaust for damage。(9) Check the control system for any leaks and damage the bellows。(10) Check the hand brake, if necessary, adjusted (nonautomatic adjustment)。(11) Check all tires (including spare tire) tread depth and fill in a form, check all the tire tread type, adjust tire pressure。(12) Check brake fluid condition, friction lining wear。(13) under a fixed wheel bolt torque, check whether the firm fixed wheels。(14) Check the ignition timing is correct, and necessary adjustments。(15) Check idle speed is correct, if necessary, adjustments。(16) Check and adjust the idle speed when the CO content (EFI engine without adjustment)。(17) Check the headlight light necessary adjustments。(18) test checks foot, hand brake, switch control and air conditioning equipment performance. maintenanceEvery car driving 30000 km, maintenance should be the following project:(1) Check the camshaft drive belt condition and tension degree, if necessary, tension。(2) replace the carburetor engine petrol filter。(3) visual inspection for damage bottom layer of protection.Every car driving 80000 km, maintenance should be the following project:(1) the replacement of fuel filter fuel injection engine。(2) replace the λ sensor.In addition, the Shanghai Santana 2000Gsi car longterm storage, each 2 to 3 months should be running an engine, time, 3 ~ 5min.附 錄(中文)桑塔納轎車的維護(hù)規(guī)范汽車行駛里程在7500km~10000km時(shí),或行駛里程不足7500km但行駛時(shí)間已達(dá)到 6個(gè)月時(shí),須到設(shè)在各地的上海大眾汽車特約維修站去進(jìn)行維護(hù)。 該項(xiàng)維護(hù)主要內(nèi)容如下: (1)檢查發(fā)動(dòng)機(jī)有無滲漏機(jī)油、防凍液、汽油以及空調(diào)系統(tǒng)有無滲漏。 (2)檢查發(fā)動(dòng)機(jī)的點(diǎn)火正時(shí)是否正確,必要時(shí)調(diào)整。 (3)檢查發(fā)動(dòng)機(jī)怠速運(yùn)轉(zhuǎn)時(shí)的CO含量,必要時(shí)調(diào)整。 (4)更換機(jī)油和機(jī)油濾清器。 (5)檢查變速箱及傳動(dòng)軸有無滲漏及損壞。 (6)檢查蓄電池酸液是否符合要求,必要時(shí)添加蒸餾水。 (7)檢查發(fā)動(dòng)機(jī)冷卻系統(tǒng)的防凍液液面高度及防凍能力,必要時(shí)更換并進(jìn)行壓力測(cè)試。 (8)檢查發(fā)動(dòng)機(jī)蓋鎖、門鉸鏈、門拉帶的潤(rùn)滑情況。 (9)檢查前制動(dòng)摩擦片的厚度。 (1)潤(rùn)滑維護(hù)每行駛7500km進(jìn)行一次。 (2)常規(guī)維護(hù)每行駛15000km進(jìn)行一次。 (3)制動(dòng)液每行駛兩年或者行駛里程每超過50000km進(jìn)行更換。 潤(rùn)滑維護(hù)主要內(nèi)容如下: (1)目測(cè)發(fā)動(dòng)機(jī)有無機(jī)油、防凍液、汽油及空調(diào)系統(tǒng)滲漏。 (2)檢查冷卻系統(tǒng)防凍液液面高度及防凍能力,必要時(shí)更換,并進(jìn)行壓力測(cè)試。 (3)潤(rùn)滑發(fā)動(dòng)機(jī)蓋上、下部以及搭鉤。 (4)潤(rùn)滑門蓋鉸鏈、門拉帶。 (5)目測(cè)制動(dòng)裝置有無滲漏及損壞。 (6)檢查轉(zhuǎn)向拉桿頭的間隙、固定程度及防塵罩有無損壞。有動(dòng)力轉(zhuǎn)向系統(tǒng)的,還應(yīng)檢查轉(zhuǎn)向助力系統(tǒng)液壓泵各接頭是否滲漏。 (7)檢查傳動(dòng)軸防塵罩有無損壞。 (8)目測(cè)傳動(dòng)箱、主傳動(dòng)軸、軸護(hù)套有無滲漏及損壞。 (9)檢查制動(dòng)摩擦片的厚度。 常規(guī)維護(hù)的內(nèi)容除潤(rùn)滑維護(hù)的項(xiàng)目外,還有以下項(xiàng)目: (1)檢查照明、警告閃光裝置、喇叭的性能。 (2)檢查刮水器和清洗裝置的性能,必要時(shí)加入清洗液。 (3)檢查離合器行程,不合格時(shí)進(jìn)行調(diào)整。 (4)檢查蓄電池酸液液面高度,必要時(shí)加注蒸餾水。 (5)檢查靜止?fàn)顟B(tài)的V形帶及其張緊度,必要時(shí)張緊或更換。 (6)清洗空氣濾清器的外殼,并更換濾芯。 (7)更換機(jī)油濾清器。 (8)檢查排氣裝置有無損壞。 (9)檢查操縱系統(tǒng)的波紋管有無滲漏與損壞。 (10)檢查手制動(dòng),必要時(shí)調(diào)整(非自動(dòng)調(diào)整)。 (11)檢查全部輪胎(包括備用胎)花紋深度并填表,檢查全部輪胎的花紋類型,調(diào)整輪胎氣壓。 (12)檢查制動(dòng)液狀態(tài),摩擦片襯面磨損程度。 (13)根據(jù)車輪固定螺栓力矩,檢查車輪固定是否牢靠。 (14)檢查點(diǎn)火提前角是否正確,必要時(shí)調(diào)整。 (15)檢查怠速是否正確,必要時(shí)調(diào)整。 (16)檢查并調(diào)整怠速時(shí)CO含量(電噴式發(fā)動(dòng)機(jī)不必調(diào)整)。 (17)檢查前照燈燈光,必要時(shí)調(diào)整。 (18)試車檢查腳、手制動(dòng)器,開關(guān)操縱及空調(diào)裝置的性能。 km,應(yīng)進(jìn)行下述項(xiàng)目的維護(hù): (1)檢查凸輪軸傳動(dòng)帶的狀態(tài)及張緊度,必要時(shí)張緊。 (2)更換化油器式發(fā)動(dòng)機(jī)汽油濾清器。 (3)目測(cè)檢查底板保護(hù)層有無損壞。 km,應(yīng)進(jìn)行下述項(xiàng)目的維護(hù): (1)更換汽油噴射式發(fā)動(dòng)機(jī)汽油濾清器。 (2)更換λ傳感器。此外,上海桑塔納2000Gsi型轎車長(zhǎng)期存放時(shí),每2~3個(gè)月應(yīng)運(yùn)轉(zhuǎn)一次發(fā)動(dòng)機(jī),時(shí)間3~5min。37
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