【正文】 “弗瑞克”空氣幕 FUJI “富士”變頻器FULTON 美國(guó)“富爾頓”鍋爐 GENUIN “正野”風(fēng)機(jī) GREE 格力GREENCOOL格林柯?tīng)?GRUNDFOS “格蘭富”水泵 Haier 海爾 Hisense 海信 HITACHI 日立霍尼韋爾自控 Johnson 江森自控 Kelon 科龍KRUGER瑞士“科祿格”風(fēng)機(jī) KU BA德國(guó)“庫(kù)寶”冷風(fēng)機(jī) Liang Chi 良機(jī)冷卻塔 LIEBERT 力博特空調(diào) MARLEY “馬利”冷卻塔 Maneurop法國(guó)“美優(yōu)樂(lè)”壓縮機(jī) McQuary 麥克維爾 Midea 美的 MITSUBISHI三菱Munters 瑞典“蒙特”除濕機(jī) Panasonic 松下 RANCO “宏高”自控REFCOMP意大利“萊富康”壓縮機(jī) RIDGID 美國(guó)“里奇”工具 RUUD美國(guó)“路德”空調(diào) RYODEN “菱電”冷卻塔 SanKen “三墾”變頻器 Samsung 三星 SANYO 三洋ASWELL英國(guó)森威爾自控 Schneider 施耐德電氣 SenseAir 瑞典“森爾”傳感器 SIEMENS 西門子SINKO ,28商機(jī)網(wǎng)。對(duì)柴油發(fā)動(dòng)機(jī)燃油噴射系統(tǒng)提出的要求也在不斷增加。達(dá)到這些需求的前提是擁有一個(gè)可以精確霧化燃油并具有高噴油壓力的燃油噴射系統(tǒng)。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)。②高壓系統(tǒng)，包含高壓泵、油軌、噴油器和高壓油管等組件。共軌系統(tǒng)的主要部分即噴油器。所有的噴油器都由一個(gè)共同的油軌提供燃油，這就是“共軌”的由來(lái)。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)。(1)壓力產(chǎn)生。將具有壓力的燃油提供給為噴射做好準(zhǔn)備的共軌系統(tǒng)的蓄能器。無(wú)論發(fā)動(dòng)機(jī)的轉(zhuǎn)速高低，還是燃油噴射量的多少，油軌中的壓力均維持在一定值。高壓泵是徑向活塞泵，在商用車上有時(shí)會(huì)使用內(nèi)嵌式噴油泵。一種控制油軌壓力的方式是通過(guò)一個(gè)壓力控制閥對(duì)高壓側(cè)進(jìn)行控制。這種控制回路允許油軌壓力對(duì)不同工況(如負(fù)載變化時(shí))迅速做出反應(yīng)。壓力控制閥安裝在燃油軌道上更可取，但是在一些應(yīng)用中，它被直接安裝在高壓泵中。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。在進(jìn)口端對(duì)燃油供給的控制減少了高壓燃油的用量，降低了泵的輸入功率。同時(shí)，流回油箱的燃油溫度與傳統(tǒng)高壓側(cè)控制的方法相比得到了降低。(3)燃油噴射噴油器直接將燃料噴到發(fā)動(dòng)機(jī)的燃燒室。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)。在恒壓狀態(tài)下，燃油供給量與電磁閥的開(kāi)啟時(shí)間成正比，因此與發(fā)動(dòng)機(jī)或油泵的轉(zhuǎn)速(以時(shí)間為計(jì)量的燃油噴射)無(wú)關(guān)。燃油噴射壓力在系統(tǒng)中基本可以自主選擇。共軌系統(tǒng)通過(guò)引入預(yù)噴射或多次噴射可以進(jìn)一步減少?gòu)U氣排放，也能明顯降低燃燒噪聲。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。采集到的數(shù)據(jù)包括：① 曲軸轉(zhuǎn)速和轉(zhuǎn)角； ② 燃油軌道的壓力； ③ 進(jìn)氣壓力；④ 進(jìn)氣溫度、冷卻液溫度和燃油溫度； ⑤ 進(jìn)氣量； ⑥ 車速等。與燃燒同步，電控單元計(jì)算施加給壓力控制閥或計(jì)算模塊、噴油器和其他執(zhí)行機(jī)構(gòu)(如EGR閥，廢氣渦輪增壓器)的觸發(fā)信號(hào)。根據(jù)曲軸和凸輪軸傳感器的數(shù)據(jù)，對(duì)照發(fā)動(dòng)機(jī)狀態(tài)(時(shí)間控制)，角度/時(shí)間系統(tǒng)調(diào)節(jié)噴油正時(shí)。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。這樣，它們就保證了柴油發(fā)動(dòng)機(jī)具有能耗低、運(yùn)行平穩(wěn)的特點(diǎn)。(6)控制單元結(jié)構(gòu)。它們通過(guò)內(nèi)置高速CAN網(wǎng)絡(luò)的“主/從”接口進(jìn)行連接，因此也擁有較高的微控制器處理能力。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。the injection pressure at pressure at present is 160 MPa。② Fuelrail pressure。② Boostpressure control。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).