渦輪增壓發(fā)動(dòng)機(jī)的原理的結(jié)構(gòu)和維修特點(diǎn)研究-大學(xué)畢業(yè)論文畢業(yè)設(shè)計(jì)學(xué)位論文范文模板參考資料(參考版)
2024-12-08 09:50本頁(yè)面
【正文】 所以 升引擎 大約一半是 作為一個(gè)強(qiáng)大的 升發(fā)動(dòng)機(jī)。 一般來(lái)說(shuō)，位 移告訴你一些關(guān)于引擎能夠產(chǎn)生多少功率。如果你有 4 缸發(fā)動(dòng)機(jī)，每缸取代半升，那么整個(gè)引擎的 升引擎。發(fā)動(dòng)機(jī)排量是乘以數(shù)量在發(fā)動(dòng)機(jī)汽缸的活塞位移的一個(gè)缸。之間的差異最大和最小稱為位移測(cè)量升或英文（立方厘米，在1000 立方厘米等于升）。當(dāng)活塞從下止點(diǎn)到上止點(diǎn)，你可以看到，燃燒室的大小變化。這些優(yōu)點(diǎn)和缺點(diǎn)，使它們更 適合某些車輛。扁平發(fā)動(dòng)機(jī)汽缸反對(duì)兩岸彼此水平。汽缸各銀行安排背后的另一個(gè)。大多數(shù)汽車在線設(shè)計(jì)的四 和 6 缸發(fā)動(dòng)機(jī)。在多缸發(fā)動(dòng)機(jī)的氣缸排列，通常有三種方式：在線，伏或平（也稱為水平對(duì)置）。發(fā)動(dòng)機(jī)有一個(gè)汽缸上面描述的。旋轉(zhuǎn)運(yùn)動(dòng)是好的，因?yàn)槲覀円D(zhuǎn)的汽車車輪它無(wú)論如何。上述的四個(gè)行程是不斷重復(fù)，只要發(fā)動(dòng)機(jī)仍然運(yùn)行。進(jìn)氣閥門打開(kāi)之前結(jié)束排氣沖程。最后，當(dāng)活塞到達(dá)下止點(diǎn)附近，排氣閥門打開(kāi)。汽油在汽缸爆炸，驅(qū)動(dòng)活塞向下。當(dāng)混合物 被壓縮，不僅在汽缸內(nèi)的壓力上升，但溫度也升高?；旌峡諝夂推驼舭l(fā)傳遞到汽缸的燃料系統(tǒng)和化油器。在進(jìn)氣行程中，活塞向下移動(dòng)從上死點(diǎn)到下死點(diǎn)的曲軸旋轉(zhuǎn)。四招是進(jìn)氣沖程，壓縮行程，動(dòng)力沖程和排氣沖程。四沖程的方法也被稱為循環(huán)血量，紀(jì)念尼古拉 可靠性，緊湊的尺寸，和操作范圍，后來(lái)成為重要的因素。汽油發(fā)動(dòng)機(jī)最初選定的汽車由于其靈活性在很寬的速度范圍。 and it used a readily available, moderately priced fuelgasoline. Reliability, pact size, and range of operation later became important factors. Almost all cars currently use what is called the four stroke cycle engine to convert gasoline into motion. The fourstroke approach is also known as the Otto cycle, in honor of Nikolaus Otto, who invented it in 1867. The four strokes are intake stroke, pression stroke, power stroke, and exhaust stroke. The piston is connected to the crankshaft by a connecting rod. On the intake stroke, the piston moves down from the top dead center to the bottom dead center as the crankshaft revolves. The intake valve opens and the fresh vaporized airfuel mixture enters the cylinder. The mixture of air and vaporized gasoline is delivered to the cylinder by the fuel system and carburetor. Then the piston moves back up to press this bustible mixture within the bustion chamber and the intake valve and the exhaust valve are all closed. When the mixture is pressed, not only does the pressure in the cylinder go up, but also the temperature increases. Before the piston reaches TDC on the pression stroke, the spark plug emits a spark to ignite the mixture. The gasoline charge in the cylinder explodes, driving the piston down. At the same time, the crankshaft is rotated as the piston is pushed down by the pressure above it. Finally, once the piston hits near the BDC, the exhaust valve opens. Then the piston again moves up in the cylinder and the burned gases are push out. The intake valve usually opens before the end of exhaust stroke. When the piston again moves downward to BDC, the fresh bustible mixture will be introduced into the cylinder. The above four strokes are continuously repeated as long as the engine remains running. Notice that the linear motion of the pistons in an engine is converted into rotational motion by the crankshaft. The rotational motion is nice because we plan to rotate the car39。 第 32 頁(yè) 共 38 頁(yè) 英語(yǔ) The reciprocating piston internal bustion system has been the most successful for automobiles, while diesel engines are widely used for trucks and buses. The gasoline engine was originally selected for the automobile due to its flexibility over a wide range of speeds. Also, the power developed for a given weight engine was reasonable。 第 31 頁(yè) 共 38 頁(yè) 結(jié)論 渦輪增壓技術(shù)對(duì)汽車來(lái)說(shuō)至關(guān)重要，隨著科技發(fā)展渦輪增壓技術(shù)將在，重型汽車，輕型汽車，柴油機(jī)，汽油機(jī)中使用，以降低排放，增加動(dòng)力的大前題實(shí)現(xiàn)。汽車上采用的渦輪增壓技術(shù)后、動(dòng)力性、經(jīng)濟(jì)性，不但得到顯著提高這對(duì)消除油價(jià)飛漲滿足日益嚴(yán)格的排放法規(guī)非常重要。本文特此介 紹了一種我國(guó)常用的廢氣渦輪增壓系統(tǒng)并展望渦輪增壓技術(shù)的前景。如果渦輪增壓器的零件損壞了，則應(yīng)當(dāng)先更換零件，然后再進(jìn)行校正，以防重新產(chǎn)生問(wèn)題 . 第三章 、 渦輪增壓技術(shù)的前景展望 隨著人們的節(jié)能意識(shí)增強(qiáng)，環(huán)保部門排放法規(guī)的日益嚴(yán)格，增壓技術(shù)越來(lái)越受到重視。例如，若在檢測(cè)前已先把空氣濾清器調(diào)換 成新的，但是殘留物（如發(fā)動(dòng)機(jī)進(jìn)氣管中由于以前節(jié)流時(shí)殘留的潤(rùn)滑油助保留著，會(huì)使您錯(cuò)誤地認(rèn)為殘留物不是節(jié)流造成的，而是別的原因造成的，人人而得出不存在空氣阻塞的結(jié)論，即使殘留物證明可能發(fā)生過(guò)節(jié)流。這些殘留物的存在常常會(huì)引起對(duì)渦輪增壓器的不準(zhǔn)確評(píng)價(jià)。 確的。必須確保軟管情況良好，接頭是緊的。 第 28 頁(yè) 共 38 頁(yè) 。 ，檢查渦輪增壓器外表面是否有污物沉淀（ 表明空氣、潤(rùn)滑油、排氣或冷卻介質(zhì)泄漏）。 。 、螺栓、壓板和墊片是否有漏裝或松動(dòng)現(xiàn)象。 ，這可能表明有空氣或燃?xì)庑孤?。所以一旦這 種漏氣發(fā)生，在額定負(fù)荷時(shí)將會(huì)產(chǎn)生嚴(yán)重問(wèn)題。目測(cè)一下是否有漏氣、堵塞、溫度過(guò)高、節(jié)流或葉輪碰殼體的情況。 四 、 渦輪增壓器故障診斷流程圖 表 1 第 22 頁(yè) 共 38 頁(yè) 表 2
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