【正文】 d fuel injection opens up future degrees of freedom in the bustion process pared with conventional fuelinjection systems。其基本功能包括對(duì)柴油燃油噴射正時(shí)的精確控制，和在給定壓力下對(duì)油量的控制。(5)控制和調(diào)節(jié)發(fā)動(dòng)機(jī)的控制單元通過(guò)傳感器檢測(cè)加速踏板的位置以及發(fā)動(dòng)機(jī)和車(chē)輛的當(dāng)前工況。噴油器的開(kāi)啟時(shí)間和系統(tǒng)油壓決定了燃油供給量。發(fā)生故障時(shí)，壓力安全閥防止油軌壓力超過(guò)最大值。(2)壓力控制所應(yīng)用的壓力控制方法主要取決于系統(tǒng)。EDC控制每個(gè)組件。共軌系統(tǒng)包括以下幾個(gè)主要的部分： ①低壓部分，包含燃油共軌系統(tǒng)組件。Dave and Kathy are going to steal away on 去。Kent describes himself as just an average 。m going ，我準(zhǔn)備回家。t have to twist my arm to get me to go with 。t go on the American 。t you just leave well enough alone? 你不能少管一些閑事嗎？1)2)You knew all along what was going 。Let39。We knew it was all over when we saw the building ，我們知道一切全完了。t be going after 。Your sister is such an 。This is a “ing of age” 。1)2)Our opponents have a height advantage on 。We need to get our act together and e to see 。m not about to go in that old ！Yes I remember that about it? 是的，我記得那個(gè)晚上，那又怎樣？What39。How about a fish sandwich? 來(lái)一塊魚(yú)肉三明治怎么樣？What about me? 我怎么樣？I39。That profane edian needs to clean up his 。Jim wants to go where the action 。（注：意指不會(huì)感到厭倦）1)2)Would you please act your age!請(qǐng)你做事要有一個(gè)與自己年齡相稱(chēng)的樣子。After winning the championship, I felt I could walk on ，我飄飄欲仙。s looks like we won39。s go allout and win this game!讓我們盡全力來(lái)打贏這場(chǎng)比賽。t see them e in at 。Can39。I just can39。1)2)3)4)You don39。As for me, I39。d say we eat chicken once a 。Tom wants to run away from 。一個(gè)可以達(dá)到以上需求的系統(tǒng)即共軌燃油噴射系統(tǒng)。噴油壓力的產(chǎn)生與發(fā)動(dòng)機(jī)轉(zhuǎn)速和噴油量無(wú)關(guān)。高壓泵是徑向活塞泵，在商用車(chē)上有時(shí)會(huì)使用內(nèi)嵌式噴油泵。安裝在高壓泵的法蘭上的計(jì)量單元保證了泵提供給油軌精確的燃油量，以維持系統(tǒng)所需要的噴油壓力。發(fā)動(dòng)機(jī)的控制單元通過(guò)與噴油器結(jié)合在一起的控制閥的開(kāi)閉控制噴油嘴的開(kāi)關(guān)。噴油針閥的開(kāi)閉動(dòng)作是液壓輔助元件助力的，以保證噴射結(jié)束的快速性。此外，EDC還擁有額外的功能以進(jìn)一步提高發(fā)動(dòng)機(jī)的響應(yīng)特性和便利性。The Common Rail Calls for lower fuel consumption, reduced exhaustgas emission, and quiet engines are making greater demands on the engine and fuelinjection demands placed on dieselengine fuelinjection systems are continuously pressures, faster switching times, and a variable rateofdischarge curve modified to the engine operating state have made the diesel engine economical, clean, and a result, diesel engines have even entered the realm of luxuryperformance demands can only be met by a fuelinjection the same time the injected fuel quantity must be very precisely metered, and the rateofdischarge curve must have an exact shape, and preinjection and secondary injection must be system that meets these demands is the monrail fuelinjection main advantage of the monrail system is its ability to vary injection pressure and timing over a broad was achieved by separating pressure generation(in the highpressure pump)from the fuelinjection system(injection).The rail here acts as a pressure of the Common Rail The monrail system consists of the following main ponent groups: ① The lowpressure stage, prising the fuelsupply system ponents。④ Electronic immobilizer, etc.(6)Control Unit the engine control unit normally has a maximum of only eight output stages for the injectors, engines with more than eight cylinders are fitted with two engine control are coupled within the “ master/slave ” network via an internal, highspeed CAN a result, there is also a high microcontroller processing capacity functions are permanently allocated to a specific control unit( control).Other can be dynamically allocated to one or many of the control units as situation demand( detect sensor signals).