本文選題：傳動(dòng)系 + 阻力測(cè)試��； 參考：《山東大學(xué)》2017年碩士論文

【摘要】：汽車傳動(dòng)系參數(shù)是決定汽車動(dòng)力性和經(jīng)濟(jì)性的關(guān)鍵,功率損失是衡量傳動(dòng)系統(tǒng)的一項(xiàng)重要技術(shù)指標(biāo),功率損失直接影響汽車整體效率、油耗和傳動(dòng)系統(tǒng)運(yùn)轉(zhuǎn)的穩(wěn)定性,傳動(dòng)系統(tǒng)的功率損耗是汽車傳動(dòng)系統(tǒng)所受阻力的表現(xiàn),本文首先在分析了小型面包車動(dòng)力性檢測(cè)的基本理論的基礎(chǔ)上,選擇了兩種典型的小型面包車為試驗(yàn)車輛,分別進(jìn)行了臺(tái)架測(cè)試,通過(guò)對(duì)比測(cè)試結(jié)果,發(fā)現(xiàn)實(shí)驗(yàn)車與對(duì)標(biāo)車存在較大的差距,通過(guò)對(duì)兩種車輛傳動(dòng)系統(tǒng)的關(guān)鍵特性進(jìn)行差異性分析,找出兩種車輛傳動(dòng)系統(tǒng)特性的差異點(diǎn),然后對(duì)產(chǎn)生差異的傳動(dòng)系主要部件進(jìn)行改進(jìn)研究,最后通過(guò)對(duì)改進(jìn)前后整車性能的對(duì)比分析,驗(yàn)證了改進(jìn)的有效性和實(shí)用性,相關(guān)結(jié)論可為提高小型面包車傳動(dòng)效率提供參考。本文主要研究?jī)?nèi)容如下:1.本文分析了小型面包車在正常行駛工況下所承受的外部阻力和內(nèi)部阻力;構(gòu)建了傳動(dòng)系統(tǒng)中主要部件的功損模型,分別分析了軸承與齒輪組嚙合的功損。2.設(shè)計(jì)了傳動(dòng)系統(tǒng)能耗測(cè)試的方法:分別選取冷態(tài)、熱態(tài)和磨合三種測(cè)試工況,在底盤測(cè)功機(jī)上使用轉(zhuǎn)鼓驅(qū)動(dòng)測(cè)試傳動(dòng)系阻力;選取了同級(jí)別的對(duì)標(biāo)車型,并設(shè)置了合理的逐級(jí)拆解傳動(dòng)系統(tǒng)總成對(duì)比測(cè)試方案。3.利用目標(biāo)車型與對(duì)標(biāo)車型在不同工況下的阻力測(cè)試結(jié)果,發(fā)現(xiàn)在整車、拆蹄片以及斷軸之后測(cè)得樣車的阻力值均高于對(duì)標(biāo)車型,說(shuō)明樣車的傳動(dòng)效率有巨大的提升空間,為目標(biāo)車型明確了降阻方向。4.改進(jìn)了小型面包車變速箱和后橋主要零部件特性。對(duì)試驗(yàn)車變速箱齒輪、軸承、潤(rùn)滑油、后橋加工形位公差和半軸游隙進(jìn)行改進(jìn)和試驗(yàn),得到了優(yōu)化的零部件精度和參數(shù)數(shù)據(jù)。
[Abstract]:The parameters of the automobile transmission system are the key to determine the power and economy of the vehicle, and the power loss is an important technical index to measure the transmission system. The power loss directly affects the overall efficiency, fuel consumption and the stability of the transmission system. The power loss of the transmission system is the manifestation of the resistance of the automobile transmission system. Firstly, on the basis of analyzing the basic theory of the dynamic performance test of the minivan, two typical minivan are selected as the test vehicle. By comparing the test results, it is found that there is a big gap between the test vehicle and the contrasted vehicle. By analyzing the key characteristics of the two kinds of vehicle transmission system, we find out the difference points between the two kinds of vehicle transmission system characteristics. Then the improvement of the main parts of the differential transmission system is studied. Finally, the effectiveness and practicability of the improvement are verified by comparing the performance of the whole vehicle before and after the improvement. The relevant conclusions can provide a reference for improving the transmission efficiency of the minivan. The main contents of this paper are as follows: 1. In this paper, the external and internal resistance of minivan under normal driving condition is analyzed, the power loss model of main parts in transmission system is constructed, and the power loss of bearing and gear group meshing is analyzed respectively. The test method of energy consumption of transmission system is designed: selecting three test conditions of cold, hot and running-in, using drum drive to test the resistance of transmission system on chassis dynamometer, selecting the same level of standard vehicle, And has set up the reasonable step-by-step disassemblage transmission system assembly contrast test plan. 3. Based on the results of the resistance test of the target type and the standard type under different working conditions, it is found that the resistance value of the prototype is higher than that of the standard type after the whole vehicle, the removal of the hoof and the broken shaft, which indicates that the transmission efficiency of the prototype has a huge lifting space. The resistance reduction direction. 4. 4 was defined for the target vehicle model. The characteristics of main parts of gearbox and rear axle of minivan are improved. The gear of gearbox, bearing, lubricating oil, rear axle machining form tolerance and half shaft clearance were improved and tested, and the optimized parts precision and parameter data were obtained.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：D631.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李松生;陳劍;凌杰;顧家銘;;高速微型球軸承摩擦力矩分析與試驗(yàn)研究[J];潤(rùn)滑與密封;2013年08期

2 楊立昆;李和言;馬彪;;DSG變速器空載功率損失預(yù)測(cè)模型[J];汽車技術(shù);2013年05期

3 莫持標(biāo);;提高汽車燃油經(jīng)濟(jì)性的措施[J];機(jī)電工程技術(shù);2011年07期

4 張慧芳;張立榮;;手動(dòng)變速器傳動(dòng)效率的影響因素分析與改善對(duì)策研究[J];制造業(yè)自動(dòng)化;2011年04期

5 王熙;秦大同;胡明輝;周保華;;汽車變速器傳動(dòng)效率理論建模與實(shí)驗(yàn)測(cè)試[J];機(jī)械傳動(dòng);2010年08期

6 王博文;侯永平;周毅;沈春娟;;乘用車滑行阻力與傳動(dòng)系阻力的研究[J];汽車科技;2010年02期

7 張有祿;;關(guān)于機(jī)械式變速箱傳動(dòng)效率影響因素的探討[J];機(jī)械工程與自動(dòng)化;2008年06期

8 劉元鵬;;汽車底盤測(cè)功機(jī)關(guān)鍵技術(shù)參數(shù)的試驗(yàn)研究[J];公路交通科技;2008年09期

9 張倫維;;養(yǎng)護(hù)由里到外 變速箱潤(rùn)滑油解析[J];當(dāng)代汽車;2008年05期

10 姚建初,陳義保,周濟(jì),余俊;齒輪傳動(dòng)嚙合效率計(jì)算方法的研究[J];機(jī)械工程學(xué)報(bào);2001年11期

，

本文編號(hào)：1960219