本文選題：動力傳動系 + 匹配　； 參考：《吉林大學(xué)》2016年碩士論文

【摘要】：隨著我國汽車行業(yè)的飛速發(fā)展,汽車成為了我們?nèi)粘Ｉ町?dāng)中有著不可替代的交通工具,但隨之給我們的環(huán)境帶來了惡劣的影響。據(jù)統(tǒng)計分析可知,我國重型商用車消耗著大量的能源,并且其數(shù)量在穩(wěn)步增加,重型商用車的油耗大成為了急需解決的問題。隨著環(huán)保意識的增強(qiáng),各地區(qū)的環(huán)衛(wèi)車的數(shù)量也不斷增加,按照2015年的政府采購信息可知,采購額已占專用車的50%。然而由于環(huán)衛(wèi)車的裝載變化大等工作特點(diǎn),動力傳動系統(tǒng)很難兼顧在各個工況時的動力性與經(jīng)濟(jì)性。本文以一款配置10檔變速箱的環(huán)衛(wèi)車為研究對象,在滿足環(huán)衛(wèi)車的行駛需求的前提下,通過優(yōu)化傳動比參數(shù)與換擋規(guī)律的方式優(yōu)化環(huán)衛(wèi)車的燃油經(jīng)濟(jì)性。本文首先利用Cruise軟件根據(jù)環(huán)衛(wèi)車的動力傳動系統(tǒng)搭建了整車模型,建立了滿足環(huán)衛(wèi)車駕駛需求的評價指標(biāo),并根據(jù)研究需求,建立了計算任務(wù),對比了仿真結(jié)果與實(shí)驗(yàn)結(jié)果,驗(yàn)證了模型的可靠性；計算了六工況的燃油消耗量,比較了Cruise軟件的仿真結(jié)果；根據(jù)對仿真結(jié)果的分析了環(huán)衛(wèi)車的動力性,經(jīng)濟(jì)性,確定了優(yōu)化傳動比及制定最佳換擋規(guī)律的優(yōu)化方案。利用Cruise軟件GSP模塊,分別計算了動力性為主和經(jīng)濟(jì)性為主的換擋規(guī)律,對比了根據(jù)車速的單參數(shù)換擋規(guī)律的仿真結(jié)果；接著利用ISIGHT——CRUISE聯(lián)合仿真,建立了優(yōu)化數(shù)學(xué)模型,選取變速箱齒比與主減速比作為設(shè)計變量,設(shè)定C—WTVC循環(huán)工況的燃油消耗量為目標(biāo)函數(shù),優(yōu)化了環(huán)衛(wèi)車的動力傳動系統(tǒng)參數(shù)；最后利用GSPOptimization計算任務(wù),基于C—WTVC循環(huán)工況與優(yōu)化后的齒比,計算得出了最佳經(jīng)濟(jì)性換擋規(guī)律,并與原車的仿真結(jié)果做了對比。本文研究說明,根據(jù)不同的循環(huán)工況以及駕駛需求,設(shè)計傳動系統(tǒng)參數(shù),制定合理的換擋規(guī)律可有效發(fā)揮車輛的節(jié)油潛力,提高車輛的燃油經(jīng)濟(jì)性。
[Abstract]:With the rapid development of automobile industry in China, automobile has become an irreplaceable means of transportation in our daily life, but it has brought us a bad impact on the environment. According to the statistical analysis, heavy commercial vehicles in China consume a lot of energy, and the number of heavy commercial vehicles is increasing steadily, the fuel consumption of heavy commercial vehicles has become a problem that needs to be solved urgently. With the increasing awareness of environmental protection, the number of sanitation vehicles in various regions is also increasing. According to the information of government procurement in 2015, the purchase amount has already accounted for 50 percent of the total number of special vehicles. However, due to the working characteristics of the environmental sanitation vehicle, it is difficult to give consideration to the power performance and economy of the power transmission system under various working conditions. In this paper, the fuel economy of a 10 speed gearbox sanitation vehicle is optimized by optimizing the transmission ratio parameters and gear shifting rules under the premise of satisfying the driving demand of the sanitation vehicle. In this paper, the whole vehicle model is built by Cruise software according to the power drive system of the sanitation vehicle, and the evaluation index to meet the driving requirement of the sanitation vehicle is established. According to the research demand, the calculation task is established, and the simulation results are compared with the experimental results. The reliability of the model is verified, the fuel consumption under six working conditions is calculated, and the simulation results of Cruise software are compared. The optimal transmission ratio and the optimal shift law are determined. The GSP module of Cruise software is used to calculate the shift law of power and economy respectively, and the simulation results based on the single parameter shift law of speed are compared, and then the optimization mathematical model is established by using the joint simulation of ISIGHT-cruise. The gear ratio of the gearbox and the main deceleration ratio are selected as the design variables, and the fuel consumption under C-WTVC cycle condition is set as the objective function to optimize the parameters of the power transmission system of the sanitation vehicle. Based on the C-WTVC cycle condition and the optimized gear ratio, the optimal economic shift law is calculated and compared with the simulation results of the original vehicle. This paper shows that according to different cycle conditions and driving requirements, the design of transmission system parameters and the formulation of a reasonable shift law can effectively bring the fuel saving potential of vehicles into full play and improve the fuel economy of vehicles.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：U469.691

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