【正文】 7）經(jīng)常檢查進(jìn)氣系統(tǒng)的密閉性，漏氣會(huì)使灰塵吸入增壓器及 發(fā)動(dòng)機(jī) ，損壞增壓器和發(fā)動(dòng)機(jī)。 發(fā)動(dòng)機(jī)排氣管中進(jìn)入金屬物 。 下面簡(jiǎn)單介紹幾種常見(jiàn)故障及保養(yǎng)方法。 渦輪增壓發(fā)動(dòng)機(jī)是依靠渦輪增壓器來(lái)加大發(fā)動(dòng)機(jī)進(jìn)氣量的一種發(fā)動(dòng)機(jī)，渦輪增壓器實(shí)際上就是 一個(gè)空氣壓縮機(jī)。其基本結(jié)構(gòu)是把渦 輪和壓氣機(jī)裝在同一軸上，并由軸承、殼體等組成。 小結(jié) 隨著科技進(jìn)步和市場(chǎng)需要，渦輪增壓器已經(jīng)變得部件更少、體積更小、轉(zhuǎn)速更高，空氣壓縮比更優(yōu)，渦輪增壓發(fā)動(dòng)機(jī)已經(jīng)成為提高發(fā)動(dòng)機(jī)動(dòng)力性的主流方向，渦輪增壓發(fā)動(dòng)機(jī)在汽車(chē)上的應(yīng)用將會(huì)越來(lái)越廣泛。 如今渦輪增壓器的結(jié)構(gòu)已經(jīng)相當(dāng)緊湊、合理、完善，材料性能的提高對(duì)渦輪增壓器性能、成本的貢獻(xiàn)是相當(dāng)大的。而且，其最大的優(yōu)點(diǎn)就是升級(jí)、改裝的便利性和原廠就具備的性能 提升潛力也非自然吸氣發(fā)動(dòng)機(jī)可以媲美。 關(guān)鍵詞： 渦輪增壓；氣缸內(nèi)燃燒；故障檢修北 京 交 通 大 學(xué) 畢 業(yè) 設(shè) 計(jì) （ 論 文 ） A B S T R A C T ii ABSTRACT Title: The structure and maintenance of the Saab D70 exhaust turbocharger ABSTRACT: Supercharging is will go into the fresh air is pressed in advance before the cylinder, and then to high density into the cylinder. Install a turbocharger turbine in the exhaust manifold, using waste gas turbine air pressor into the air intake system, the turbocharger can increase the engine torque, thus improve the engine power, reduce fuel consumption. Turbocharger initially was applied to diesel engines, but as the pressurization technology development and environmental protection pressure increasing, more and more gasoline engine turbocharger is installed. Turbo, the Turbo, or T, the first time by the Swedish SAAB (SAAB) motors used in automobile industry. Now more and more car application turbo technology. Saab D70 car carrying the saab technology is based on independent research and development of T engine, the set of turbocharging system inherits the saab of northern European descent, and some development. Familiar with the structure and principle of the turbocharging system, in accordance with requirements of the domestic environment and noise, the supercharging system to improve, adjust and make it more in line with the domestic various standards, more meet the requirements of consumers increasingly strict, make the saab D70 sedan in the increasingly fierce market petition invincible position. Saab D70 car not only has a strong power, make the drivers realize continuous TuiBei feeling, and solve the sluggish start, stall speed turbocharged models such as mon problem. Compared with the same engine 1700 turn turbine intervention, saab D70 engine speed 1200 RPM, the turbine can early intervention, on the initial velocity have obvious advantages. In addition, the engine also implements the 1900 to 5000 turn peak torque of linear output, after the guarantee period of the acceleration of extraordinary ability, make the saab D70 also has a strong power when the car in high speed. KEYWORDS： Turbocharging； Air cylinder internal bustion； Corrective maintenance 北京交通大學(xué)畢業(yè)設(shè)計(jì)（論文） 目錄 iii 目錄 中文摘要 .................................................................................................................... i ABSTRACT .............................................................................................................. ii 1 緒論 .....................................................................................................................1 選題的發(fā)展 背景 ......................................................................................1 選題 的目的與意義 ..................................................................................2 選題的 國(guó)內(nèi)外研究現(xiàn)狀 ..........................................................................2 選題的 國(guó)內(nèi)研究現(xiàn)狀 ...................................................................2 選題的 國(guó)外研究現(xiàn)狀 ...................................................................3 小結(jié) ...............................................................................................3 研究?jī)?nèi)容 ..................................................................................................4 研究 思路與論文結(jié)構(gòu) ..............................................................................4 2 1 級(jí)標(biāo)題 ............................................................................................................6 2 級(jí)標(biāo)題 .................................................................................................6 3 級(jí)標(biāo)題 ......................................................................................7 3 1 級(jí)標(biāo)題 ..........................................................................................................10 2 級(jí)標(biāo)題 ...............................................................................................10 3 級(jí)標(biāo)題 .................................................................................... 11 4 1 級(jí)標(biāo)題 ..................................................................................................