【正文】 attention by major motor panies at home and abroad because of the advantages of its good shift quality, vehicle dynamics, economic performance and low fuel consumption. Many Wellknown domestic and foreign automobile manufacturers start to make this design. At present, The transmission conyroled by Hydraulic and electronic technology is the mainstream in this products,But DCT transmission Test Bench is an indispensable measure to the development of such new products, The vehicle transmission hydraulic test stand Introduced in the subject is designed for this purpose,This subject used puter technology control technology using a variety of control in the hydraulic test system,developed a multifunction hydraulic test Bench,After a thorough study of hydraulic testing technology Control technology and puter technology at home and abroad, This test benth is mainly used for function test of automatic dual clutch transmission hydraulic system .There are mainly two aspects of test: Pump performance test and valve block performance test. The specific tests which the contents of the pump are mechanical efficiency of the pump test, Volumetric efficiency of the pump test etc. And the specific tests which the contents of the valve block are: Valve characteristics test, Valve leakage test, a bination of functional testing of each valve on valve block, valve block life test,etc.Key words：Automatic transmission system；Hydraulic；valve block；benth目 錄摘要………………………………………………..…….….…………….. .IABSTRACT………………………………………….……………………..…………….II1 前言……….…………………………………………………………….….……………..1 選題背景與意義..................... ….......…….........…… …….………….………..1 液壓技術(shù)的現(xiàn)狀及發(fā)展趨勢............……….......……… …….………….………..1 國外液壓技術(shù)的發(fā)展趨勢.....................…………………….…....……….1 國內(nèi)液壓技術(shù)的現(xiàn)狀....... ... .................…………………….…....……….1 選題的目的及意義............... .......…………………………….…....……..………22 試驗臺的設(shè)計內(nèi)容及方案.............……..….………………………….…..….………….3 引言……………………………………… ………………………………………..3 液壓性能綜合試驗臺設(shè)計方案……………….……… ………...………………..3 液壓性能綜合試驗臺組成……………….……… ………...………………..4 液壓系統(tǒng)……………………………………….… ………………………...4 數(shù)顯系統(tǒng)……………………………………….… ………………………...5 電氣控制系統(tǒng)………………………………….… ………………………...5 循環(huán)加熱系統(tǒng)………………………………….… ………………………...5 主要技術(shù)指標(biāo)………………………………………………...…………………...53 液壓系統(tǒng)的設(shè)計….…………………………………………………….….……………..6 液壓系統(tǒng)工況分析…………………………………………...…………………...6 擬定液壓系統(tǒng)工作原理圖…………………………………...…………………...6 確定供油方式………………………………….… ………………………...6 調(diào)壓及調(diào)速方式選擇………………………….… ………………………...6 泵及閥組試驗油路切換方式選……………….… ………………………...6 流量測量方式選擇…………………………….… ………………………...6 循環(huán)加熱油路的選擇………………………….… ………………………...7 液壓系統(tǒng)的計算和液壓元件的選擇………………………...…………………...8 確定試驗油泵的流量、壓力………………….… ………………………...8 與試驗油泵匹配的電動機(jī)的選定…………….… ………………………...9 輔助油路和輔助電機(jī)的選定………………….… ………………………...9 液壓閥的選擇………………………………….… ………………………..9 液壓元件的選定…………………………….… ………………………...9 連接件的確定………………………………….… ………………………..11 液壓油箱的設(shè)計……………………………….… ………………………..124 試驗臺液壓系統(tǒng)工作原理.…………………………………………….….……………14 被試油泵進(jìn)出油路…………………………………………...………………….14 泵試驗油路和閥組試驗油路………………………………...………………….14 流量測量油路………………………………………………...………………….15 循環(huán)加熱油路………………………………………………...………………….155 試驗臺操作面板各設(shè)計功能的實現(xiàn)…………….………..….……...…..….………...16 液壓控制旋鈕的使用………………………………………...………………….16 電氣控制旋鈕的使用………………………………………...………………….16 開機(jī)前各控制開關(guān)位置選擇………………………………...………………….17 報警與超壓保護(hù)功能………………………………………...………………….186 結(jié)論......................……….………….……………………..….……...…..….………...20參考文獻(xiàn)......................…………….…………………..….…..……………….………….21致謝......................………………….……………………..…….…………...…………….221 前 言 選題背景與意義隨著汽車工業(yè)的迅速發(fā)展, 現(xiàn)代汽車的車型不斷增加, 性能不斷提高, 電子化程度不斷提高, 新結(jié)構(gòu)和裝置相繼涌現(xiàn),變速器就是其中之一。試驗臺主要用于汽車雙離合器液壓變速系統(tǒng)的性能試驗，試驗內(nèi)容主要包括二個方面：泵性能試驗和閥組性能試驗。目前，采用液壓與電子技術(shù)操縱控制的變速器是此類產(chǎn)品的方向主流，而 DCT 變速器試驗臺是研發(fā)此類新產(chǎn)品不可缺少的手段，本課題所介紹的汽車變速器液壓試驗臺是基于此目的而設(shè)計。畢 業(yè) 設(shè) 計題 目 汽車變速系統(tǒng)液壓性能綜合 試驗臺的設(shè)計 摘 要汽車自動變速系統(tǒng)作為一種新興的變速器技術(shù)，因其具有良好的換擋品質(zhì)和車輛動力性、經(jīng)濟(jì)性以及油耗低的優(yōu)點，正受到國內(nèi)外各大汽車公司的重視。國內(nèi)外的著名汽車制造廠商對此展開研究設(shè)計。本課題在經(jīng)過充分研究國內(nèi)外液壓測試技術(shù)、控制技術(shù)和計算機(jī)技術(shù)后，將計算機(jī)技術(shù)及采用多種控制方式的控制技術(shù)運用于液壓測試系統(tǒng)中，開發(fā)出多功能液壓測試試驗臺。其中泵的具體試驗內(nèi)容有：泵的機(jī)械效率測試