柴油機(jī)-外文翻譯-wenkub.com
2025-08-02 08:31 本頁(yè)面
【正文】 現(xiàn)在，柴油機(jī)電子控制技術(shù)在發(fā)達(dá)國(guó)家的應(yīng)用率已達(dá)到60%以上。經(jīng)過(guò)處理與計(jì)算后，按照運(yùn)行需要的最佳對(duì)執(zhí)行機(jī)構(gòu)進(jìn)行輸出與控制，驅(qū)動(dòng)柴油機(jī)的相應(yīng)部分，使柴油機(jī)的運(yùn)行工況達(dá)到最佳。在采用“時(shí)間控制”的第一代電控噴油系統(tǒng)中，基本保留了傳統(tǒng)燃油噴射系統(tǒng)的組成和結(jié)構(gòu)，通過(guò)設(shè)置控制系統(tǒng)，形成數(shù)字式高頻調(diào)節(jié)系統(tǒng),，由電磁閥的關(guān)閉時(shí)刻和閉合時(shí)間決定循環(huán)供(噴)油量和噴油正時(shí)，其控制自由度和控制精度都是“位置控制”所無(wú)法比擬的，其技術(shù)上的難點(diǎn)在于如何加快需要通過(guò)大油量的高速電磁閥的響應(yīng)速度，同時(shí)噴油壓力還是無(wú)法獨(dú)立控制。按對(duì)循環(huán)供(噴)油量、噴油正時(shí)、噴油速率和噴油壓力等的控制方式分，經(jīng)歷了從“位置控制”到“時(shí)間控制”，再到“時(shí)間壓力控制”或“壓力控制”的發(fā)展過(guò)程。柴油機(jī)是一種非均質(zhì)燃燒，可燃混合氣形成時(shí)間很短，而且可燃混合氣形成與燃燒過(guò)程交錯(cuò)在一起。同時(shí)對(duì)柴油機(jī)的動(dòng)力性能、經(jīng)濟(jì)性能、控制廢氣排放和噪聲污染的要求也越來(lái)越高。diesel engine electronic control technology development Electronically controlled diesel engine technology started in the 20th century, 70s, 80s since the 20th century, the United Kingdom Lucas pany, Robert Bosch GmbH of Germany, MercedesBenz Motor Company, American General Detroit Diesel Corporation, Cummins Inc., Caterpillar Inc., Japan 50 Ling Motor Co. and Komatsu Ltd. are peting to develop new products and market to meet the increasingly stringent emissions regulations. Because diesel engines have high torque, highlife, low fuel consumption and low emissions characteristics of diesel engine vehicles and solving the energy problem of construction machinery the most realistic and most reliable means. Therefore the use of diesel engines has bee an increasingly widespread, more and more quantity. At the same time, the power of diesel engine performance, economic performance, emission control and noise pollution are also getting higher and higher. To rely on traditional mechanical control fuel injection system has been unable to meet the above requirem
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