本文選題：貨車 + 動力性�。� 參考：《青島理工大學(xué)》2016年碩士論文

【摘要】：貨車是人們?nèi)粘Ｉ畈豢苫蛉钡呢浳镞\輸工具,是國民經(jīng)濟發(fā)展的重要組成部分。動力性和經(jīng)濟性是貨車重要的性能指標(biāo),直接影響貨車的運輸效率和成本,動力傳動系統(tǒng)匹配直接影響其動力性和經(jīng)濟性。貨車動力傳動系統(tǒng)的開發(fā)基本為匹配后橋主減速比,發(fā)動機和變速箱的選型基本在市場調(diào)研和項目立項階段已選定。后橋主減速比的選定原則為在滿足動力性和經(jīng)濟性的國家標(biāo)準(zhǔn)和設(shè)計要求的前提下,具備最低的燃油消耗量。本文以某二類底盤改裝的載貨汽車、廂式運輸車和倉柵式運輸車為研究對象,匹配多個不同的后橋主減速比,運用AVL-Cruise進行仿真計算,通過評價選擇優(yōu)選后橋主速比。同時對優(yōu)選的后橋主減速比的車型進行實車測試,進行綜合評價對比。本文研究的工作主要如下:1、查閱大量文獻,對動力性評價指標(biāo)參數(shù)進行解析,了解美國、歐洲和日本燃油經(jīng)濟性指標(biāo)控制思路,重點分析國內(nèi)工信部C-WTVC循環(huán)油耗限值和交通部營運貨車油耗限值,制定本文研究貨車的動力性和經(jīng)濟性設(shè)計評價指標(biāo)。2、深入研究動力傳動系統(tǒng)設(shè)計計算理論,對發(fā)動機數(shù)學(xué)模型、阻力理論模型和動力性、經(jīng)濟性參數(shù)計算進行詳細研究,同時針對AVL-Cruise軟件的仿真計算進行研究,對影響計算結(jié)果準(zhǔn)確度的參數(shù)進行了著重分析。3、對同一底盤改裝的三類貨車匹配的后橋主減速比進行AVL-Cruise仿真計算,針對計算的結(jié)果進行評價,通過數(shù)據(jù)對比和圖表類比,選出符合三類貨車的最優(yōu)后橋主減速比。4、對三類貨車的最優(yōu)后橋主減速比的樣車進行實車測試,通過測試結(jié)果對比驗證AVL-Cruise仿真計算的符合性,對本文的研究進行綜合評價。研究結(jié)果表明,后橋主減速比為貨車動力傳動系統(tǒng)匹配的關(guān)鍵參數(shù),直接影響動力性和經(jīng)濟性的評價指標(biāo)。同時AVL-Cruise仿真計算可為貨車動力傳動系統(tǒng)匹配提供較為快捷和準(zhǔn)確的計算。
[Abstract]:Freight car is an indispensable means of cargo transportation in people's daily life and an important part of the development of national economy. Power and economy are important performance indexes of freight cars, which directly affect the transportation efficiency and cost of freight cars, and the matching of power transmission system directly affects its power performance and economy. The development of truck power transmission system is basically the main deceleration ratio of the matching rear axle. The selection of engine and gearbox has been basically selected in the stage of market research and project establishment. The principle of selecting the main deceleration ratio of rear axle is to have the lowest fuel consumption under the premise of satisfying the national standards and design requirements of power and economy. In this paper, a modified truck with a second type chassis, a van transport vehicle and a silo grille transport vehicle are taken as the research objects. The main deceleration ratio of the rear axle is matched with several different rear axle main deceleration ratios, and the simulation calculation is carried out by using AVL-Cruise, and the main speed ratio of the rear axle is selected through evaluation and selection. At the same time, the optimal rear axle main deceleration ratio of the vehicle model was tested and comprehensive evaluation was made. The main work of this paper is as follows: 1, referring to a large number of documents, analyzing the index parameters of power performance evaluation, and understanding the control ideas of fuel economy indicators in the United States, Europe and Japan. The C-WTVC cycle fuel consumption limit of the Ministry of Industry and Information Technology in China and the fuel consumption limit value of the operating freight car in the Ministry of Communications are analyzed emphatically, and the evaluation index of the power and economy design of the freight car is established in this paper, and the design and calculation theory of the power transmission system is deeply studied. The mathematical model of engine, the theoretical model of resistance and the calculation of dynamic and economic parameters are studied in detail. At the same time, the simulation calculation of AVL-Cruise software is studied. The parameters affecting the accuracy of the calculation results are analyzed emphatically. The AVL-Cruise simulation calculation of the main deceleration ratio of the rear axle matched by the three types of freight cars modified with the same chassis is carried out. The results of the calculation are evaluated through data comparison and chart analogy. The optimal rear axle main deceleration ratio of three kinds of freight cars is selected. The test results of the model cars with the optimal rear axle main deceleration ratio are carried out. The conformance of the AVL-Cruise simulation calculation is verified by comparing the test results, and the research in this paper is evaluated synthetically. The results show that the main deceleration ratio of rear axle is the key parameter of the matching of truck power transmission system and directly affects the evaluation index of power performance and economy. At the same time, AVL-Cruise simulation calculation can provide a faster and more accurate calculation for the matching of truck power transmission system.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：U463.2

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