本文選題：干式雙離合變速器 + 轉(zhuǎn)矩傳遞　； 參考：《上海交通大學(xué)》2014年碩士論文

【摘要】：雙離合自動變速器（DCT）在中國具有廣闊的發(fā)展前景。將先進(jìn)的自動變速器的控制技術(shù)與國內(nèi)傳統(tǒng)的手動變速器（MT）的制造生產(chǎn)相結(jié)合，有可能在短時間內(nèi)開發(fā)出擁有自主知識產(chǎn)權(quán)的雙離合器自動變速器，進(jìn)而逐步的取代國外自動變速器產(chǎn)品在中國市場的地位。開展DCT技術(shù)的研究對中國汽車自動變速器行業(yè)的發(fā)展有著重要的推動作用。 本文在分析干式雙離合器常開式離合器膜片彈簧載荷變形特性的基礎(chǔ)上，完成了對于內(nèi)、外膜片彈簧參數(shù)的選擇�？紤]了離合器波形彈簧片的軸向壓縮特性，通過試驗(yàn)得到了從動盤軸向壓縮特性曲線。推出了膜片彈簧結(jié)合指部分變形與壓緊力關(guān)系，建立了離合器轉(zhuǎn)矩與結(jié)合軸承位移間的關(guān)系模型。 通過發(fā)動機(jī)臺架試驗(yàn)，獲得了相關(guān)試驗(yàn)數(shù)據(jù)，利用修正系數(shù)法建立了發(fā)動機(jī)動態(tài)轉(zhuǎn)矩模型。分別建立了整車動力學(xué)模型、離合器行程控制模型、起步駕駛員意圖判斷模型和裝備有雙離合自動變速器汽車的系統(tǒng)動力學(xué)模型。并以汽車一檔穩(wěn)定運(yùn)行切換到二檔穩(wěn)定運(yùn)行為例，考慮了切換過程中同步器引起的轉(zhuǎn)動慣量的變化，將此切換過程分為五個階段，分別建立了雙離合自動變速器相應(yīng)階段的系統(tǒng)動力學(xué)方程。 針對雙離合自動變速器獨(dú)特的雙離合器結(jié)構(gòu)，探討了可能出現(xiàn)的不同起步模式。通過搭建起步模型，對爬行起步、正常起步和急起步這幾種典型的起步模式進(jìn)行了仿真分析�？紤]雙離合自動變速器不同的換擋情況，通過搭建換擋模型，，對正轉(zhuǎn)矩升高檔和正轉(zhuǎn)矩降低檔這兩種典型換擋工況進(jìn)行了分析與研究。 本論文旨在為建立精確的干式雙離合自動變速器轉(zhuǎn)矩傳遞模型提供一種可行的計(jì)算方法，并為起步、換擋控制提供理論依據(jù)。所得的研究結(jié)論以期能夠?yàn)楹罄m(xù)的干式雙離合器變速器的換擋品質(zhì)與動態(tài)特性綜合最優(yōu)控制的相關(guān)研究提供參考。
[Abstract]:Double clutch automatic transmission (DCT) has a broad prospect in China. By combining the advanced automatic transmission control technology with the manufacture and production of domestic traditional manual transmission (MTT), it is possible to develop a dual clutch automatic transmission with independent intellectual property rights in a short period of time. Then gradually replace the foreign automatic transmission products in the Chinese market position. The research of DCT technology plays an important role in the development of auto transmission industry in China. Based on the analysis of the load deformation characteristics of the diaphragm spring of the dry double clutch, the selection of the inner and outer diaphragm spring parameters is completed. The axial compression characteristic of the clutch wave spring plate is considered, and the axial compression characteristic curve of the driven disc is obtained by experiments. The relation between partial deformation and compression force of diaphragm spring and the relationship between clutch torque and bearing displacement are established. The engine dynamic torque model is established by means of the modified coefficient method, and the relevant test data are obtained through the engine bench test. The whole vehicle dynamic model, clutch stroke control model, starting driver intention judgment model and system dynamics model with dual clutch automatic transmission are established respectively. Taking the stable operation of the first and second gears as an example, the moment of inertia caused by the synchronizer is considered, and the switching process is divided into five stages. The system dynamics equations of dual clutch automatic transmission are established. Aiming at the unique double clutch structure of double clutch automatic transmission, different starting modes are discussed. The typical starting modes of crawling starting, normal starting and urgent starting are simulated and analyzed by building the starting model. Considering the different gear shifting conditions of double clutch automatic transmission, this paper analyzes and studies the two typical gear shifting conditions, namely, positive torque raising high grade and positive torque lowering gear, by setting up a shift model. The purpose of this paper is to provide a feasible calculation method for establishing accurate torque transfer model of dry double clutch automatic transmission, and to provide theoretical basis for starting and shifting control. The conclusions obtained are expected to provide a reference for the subsequent research on the integrated optimal control of the shift quality and dynamic characteristics of the dry double clutch transmission.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U463.2

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