Engine type : air - cooled 4 stroke ohv single cylinder 發(fā)動(dòng)機(jī)類(lèi)型:單杠風(fēng)冷四沖程頂置氣門(mén)鉆孔敲68mm45mm
Cab over engine type 平頭式載重汽車(chē)
The cylinder pressures of engines type 492qc , 492wqb were measured continuously and simultaneously under motoring condition . the s . i 使用本采集系統(tǒng)我們連續(xù)采集了492qc 、 492wqb發(fā)動(dòng)機(jī)倒拖工況的各缸壓力。
Clr user - defined types are integrated with the database engine type system and can be used in all the contexts where the built - in types are used Clr用戶(hù)定義類(lèi)型與數(shù)據(jù)庫(kù)引擎類(lèi)型系統(tǒng)集成,并可以在所有使用內(nèi)置類(lèi)型的上下文中使用。
This thesis is on the basis of the research of diesel engine type 4135 etc , and the complete and systematic numerical modeling and malfunction simulation for thermal loading 本文以4135柴油機(jī)等機(jī)型作為研究對(duì)象,對(duì)其熱負(fù)荷進(jìn)行了全面系統(tǒng)的數(shù)值模擬和故障仿真。
In chapter 3 , it systematically analyzes the bi - dimensioned instantaneous temperature range state of piston , cylinder liner and piston rings when diesel engine type 4135 is considered under the normal friction heat 第3章系統(tǒng)地分析了4135柴油機(jī)在考慮摩擦熱的正常工況下活塞、缸套和活塞環(huán)各部分二維瞬態(tài)溫度的分布和狀態(tài)。
Also a special diagnosis system for the cylinder scoring malfunction of internal combustion engine has been briefly set up . it realizes the numerical simulation of bi - dimensioned and tri - dimensioned cycling instantaneous temperature field for the diesel engine type 4135 and the simulation animated demonstration of the thermal deformation and cylinder scoring malfunction 并且還初步建立了內(nèi)燃機(jī)拉缸故障診斷分析型專(zhuān)系系統(tǒng),實(shí)現(xiàn)了4135柴油機(jī)二維、三維循環(huán)瞬態(tài)溫度場(chǎng)的數(shù)值仿真、熱變形和拉缸故障的模擬動(dòng)畫(huà)演示。
In chapter 4 , for the first time , in the way of virtual malfunction simulation , cooling water of diesel engine type 4135 has been simulated under the stopping water supply malfunction . and the analysis and discussion has been taken on the result of transient temperature curve of the simulation . and in the same way , internally cooling oil piston of diesel engine type 180 has been numerically simulated on the virtual thermal loading mal 得出了虛擬其斷水故障仿真的瞬態(tài)溫度曲線(xiàn)結(jié)果,并對(duì)其進(jìn)行了分析和探討;同時(shí)也用虛擬仿真的思想對(duì)180型柴油機(jī)內(nèi)油冷活塞進(jìn)行了虛擬其熱負(fù)荷故障的數(shù)值仿真,得出了其在斷油情況下和超負(fù)荷運(yùn)轉(zhuǎn)情況下的分析結(jié)果。
Here a number of factors must be taken into consideration , such as the environmental standard of the area where the engine room is located , the fender structure of the engine room as well as the engine type , power level and the cooling air volume , etc . the core of the overall control is the concept of " equal sound insulation " , which means to apply a closed fender structure to isolate the engine unit from outside parts so as to cut the outward sound radiation 經(jīng)過(guò)多年來(lái)與環(huán)保部門(mén)的合作,對(duì)油機(jī)房進(jìn)行消噪聲處理,積累了一些治理經(jīng)驗(yàn),主要是必須根據(jù)具體的機(jī)房項(xiàng)目來(lái)確定相應(yīng)的控制方案,這其中應(yīng)考慮機(jī)房所在區(qū)域的環(huán)境標(biāo)準(zhǔn),機(jī)房圍護(hù)結(jié)構(gòu)形式及油機(jī)機(jī)型、功率、冷卻風(fēng)量等因素。綜合控制的核心是等隔聲概念,即用一封閉的圍護(hù)結(jié)構(gòu)將機(jī)組與外界隔離開(kāi)來(lái),減少聲源對(duì)外的聲輻射。
It also sets up a cycling instantaneous heat transferring simulating model of tri - dimensioned coupling system of piston assembly and cylinder liner , and induces the thin oil film between piston assembly and cylinder liner and reticulates it . the model advances a great lot over the previous researches and approaches closer to the real case . at last , the coupling system of the cycling instantaneous temperature field of piston assembly and cylinder liner of diesel engine type 4135 is formed 在模型的建立上,充分考慮了活塞組和缸套間非常細(xì)薄的油膜厚度并對(duì)其進(jìn)行了網(wǎng)格劃分,使得所建立的傳熱模型和以往的研究相比前進(jìn)了一大步、更接近真實(shí)情況,最終得出了4135柴油機(jī)活塞組、缸套耦合系統(tǒng)的循環(huán)瞬態(tài)溫度場(chǎng)。