進氣沖程 的英文怎麼說
中文拼音 [jìnqìchōngchéng]
進氣沖程
英文
admi ion stroke-
In pumping fluid with gas, pressure boost can be improved by enhancing the pump rotation speed, thereby improving the performance of the pump to a certain degree ; when the gas content is constant, by increasing the inlet pressure, the pressure boost can be enhanced and the pump efficiency be improved remarkably ; when the gas content is rather high, there will be a problem of matching between the gas pressure and the fluid pressure ; the performance of the multiphase pump can also be improved by means of rational design of buffer vessel and homogenizer
試驗分析認為,氣液混輸工況下,提高泵轉速可以提高增壓,在一定程度上能改善多相泵的工作性能;含氣率一定時,增加進口壓力,可使多相泵增壓值增大,泵效明顯增加,最大含氣率點后移,但含氣率很高時,存在氣液壓力相匹配問題;改進緩沖罐和均化器的設計,有利於氣液互相夾帶,避免氣囊產生,可改善多相泵的輸送性能。Sicp / al matrix composites, with 5, 15 and 25 % volume fraction of sic particles, were prepared by vacuum hot - pressing sintering processing in this paper. based on mechanics properties, sem observation and energy dispersive x - ray analysis, the interface reaction phenomenon of sicp / al composites made by vacuum hot - pressing sintering, as well as the reinforcement and fracture mechanisms of this composite were analyzed. the dynamic responses of sipc / al composites were studied by a split hopkinson high - speed pressure bar impact system which strain rate was from quasistatic state strain rate ( 3. 3 10 - 3s - 1 ) to dynamic state strain rate ( 5. 2 103 s - 1 )
本研究以武裝直升飛機防護裝甲材料為研究對象,採用真空熱壓粉末冶金燒結工藝制備了含sic顆粒體積分數分別為5 、 15和25的sic顆粒增強鋁基復合材料,結合其力學性能、掃描電鏡和界面微區能譜分析結果,分析了sic _ p al復合材料的真空燒結過程中的界面現象,以及材料增強和斷裂機理,並利用hopkinson高速壓桿沖擊實驗系統對其從靜態到動態(應變率為3 . 3 10 ~ ( - 3 ) s ~ ( - 1 ) 5 . 2 10 ~ 3s ~ ( - 1 ) )的壓縮破壞響應進行了研究,分析了不同體積分數sic _ p al復合材料高應變率壓縮載荷下,材料的變形和微觀損傷機理,以及利用高速沖擊空氣炮測定了改復合材料制備剃度復合板的穿透性能。The investigation shows that plenum chamber total pressure has multifarious effects on arcjet thruster operation, and both specific impulse and thrust efficiency can be improved by increasing it befittingly under steady arc
研究表明,集氣腔總壓對推力器工作過程具有多方面的影響,在保證電弧穩定的情況下,適當提高集氣腔總壓可同時提高比沖和推進效率。In this article, firstly the background of the textile trade conflicts within sino - us or sino - euro are introduced, thus learn that how to discern and dodge the foreign trade risks, how to choose the appropriate investment projects have already become one of the most important questions for exporting companies on foreign trade affairs well - known as high investment and high risk. so the main text makes a risk analysis qualitatively and quantitatively on a textile - exporting trading company from three angles of statistic 、 game theory and portfolio theory, which is the main content that we studied. firstly, the statistic article adopts data of the transaction closing price of the textile clothing index in shenzhen stock exchange at the end of each quarter as well as several other kinds of data reflecting the macro - economic changes, performs an empirical analysis of these data according to the theory of co - integration test 、 granger cause test and impulse response function of time series in economitric, and learn that the impact to ti is more obvious by the economic index reflecting local commodity price level and economic prosperity degree home and abroad, as well as the impact degree and the time lag degree, and knows the macro - economic risks faced by textile business enterprises ; after that by the game theory angle we analyze exactly the managing risks faced by one textile export corporation named beauty. from the game expansion chart the system arrangement between censor ways by exportation goal countries and exporting strategies by the exporting enterprises has been analyzed. involving the benefit assignment between them both the limited rounds and infinite rounds negotiations of cooperation games have been studied, and then country responsibility and the enterprise managing risks on foreign trade affairs and so on have been analyzed exactly ; in order to realize the investment multiplication in the certain degree to disperse the risk, the
本文首先介紹了中美、中歐紡織品貿易爭端的來龍去脈,由此可知在涉外貿易這種以高投入、高風險著稱的行業里,如何甄別和規避外貿風險、如何選擇合適的投資項目已經成為外貿企業的首要問題。因此,正文分別從統計學、博弈論和投資組合三種角度對涉外紡織品貿易公司風險進行了定性和定量的分析,這也是本文的主要研究內容。首先,統計學篇選取了深圳證券交易所行業分類指數?紡織服裝指數( ti )每一季度末的交易收盤價和若干種反映宏觀經濟變化的指標,利用計量經濟學中時間序列的協整檢驗、 granger因果檢驗和脈沖反應函數等理論做實證分析,從而得知反映國內物價水平和國內外經濟景氣程度的經濟指標對紡織板塊上市值的沖擊比較明顯,且可知沖擊程度和時滯度,進而分析出涉外紡織企業所面臨的宏觀經濟風險;接著,從博弈論的角度具體分析一家紡織品出口公司( beauty )的外貿活動所面臨的各種經營風險,該篇從博弈擴展圖入手,分析了出口目的國審查方式與本企業出口策略之間的制度安排;並圍繞雙方的利益分配,研究了有限回合和無限回合合作談判博弈,然後具體論述了國家責任和企業涉外經營風險等問題;在一定程度上為了實現投資多元化來分散風險的目的,投資組合篇從經典的markowitz模型著手,在一些特定條件的限制下,給出了一個相應的投資組合模型。The big diameter punch hole pile foundation engineering in guangdong coastal area was analyzed in detail by the example pile foundation of 1 #, 2 # unit desulphurizing engineering technology building of zhuhai power plant
摘要以珠海電廠1 # , 2 #機組煙氣脫硫工程工藝樓樁基為例,對廣東浴海地區大直徑沖孔樁基工程進行了較為詳細地分析,以及對實際施工過程中的理論應用進行了論述。With the basic theory of air buffer, aiming to the key segment for modeling - flow equation and gas buffering process, theoretical analysis with experimental data is helpful to realize the modeling and simulation research. 3
介紹了氣動緩沖的基本理論,通過機理分析建立了被研究對象的數學模型,針對建立精確數學模型的關鍵環節? ?流量方程和氣動緩沖過程,提出機理分析與實驗建模相結合的建模方法,並進行了模擬和實驗研究; 3Then diesel fuel oil is injected or sprayed into the cylinder at the end of the compression stroke.
然後在壓縮沖程即將結束時,柴油燃料被噴射或被噴霧進入氣缸。The initial development of explosive field and the circleflow behavior, the entire spread court, with an obstacle around an explosive source was obtained and the law of shock wave around - flow was analyzed
針對有障礙物阻檔時空氣沖擊波的環流現象進行數值模擬,得到在爆源周圍有障礙物時爆炸場初始發展、環流情況及整個傳播過程,並分析了空氣沖擊波的環流規律。The research of this paper includes : ? high - speed photography and flash x - ray radiography are both used to capture the process of al shell ' s great deformation under low pressure. front illuminations are used to get the development of the fracture on the al shell. the relative energy release is analyzed from overpressure curves measured with some sensors
本文的研究內容主要包括: ?在受試炸藥經歷低應力大變形過程的susan試驗中,同時採用高速攝影、閃光x射線照相對彈體的撞靶過程進行了拍攝,得到了殼體膨脹變形過程圖像,並使用前照明技術觀察到了鋁殼表面產生的裂紋及其發展變化過程;從壓力傳感器測量的空氣沖擊波超壓曲線,獲得反應釋放總能。Exhaust system can be respectively calculated in two - stroke and four - stroke engines by the developed escs system for application. it can also analyze the pressure wave in the intake pipe and exhaust pipe which infect on engine dynamical performance
應用開發出的escs系統分別對二沖程發動機及四沖程發動機的排氣凈化系統進行模擬計算,分析進、排氣管中壓力波對發動機動力性能的影響。In the text, there analyzes the process of the mixture air and fuel in the two stroke gasoline engine and bring forward the specific solution to the improvementsing gasoline engine the high - press direct in - cylinder injection. this technology sprays the feul into the cylinder after the outlet vavle closed and scavengs the engine cylinder with pure and fresh air, which avoid the fuel escapes unburned
本文分析了二沖程汽油機混合氣形成過程,並提出了具體的改進方案,用缸內高壓直接噴射技術進行改造。缸內高壓直接噴射是在發動機排氣口關閉後向氣缸內噴射燃油,使用純新鮮空氣進行掃氣,避免了燃油短路損失。With zonal patched grid technology and second - order zonal solver method, the numerical simulation on inlet complex flow field of solid rocket ramjet assisted range projectiles with different struts shapes was made at different mach numbers
摘要結合分區對接網格技術和二階精度區域分解演算法,對某沖壓增程彈丸進氣道在不同來流攻角和不同側向支柱形狀工況下的內外復雜流場進行了數值模擬。With computations and analysis, the comprehension on the mixing and combustion process is increased, and some significative results are listed below : a ) there are three recirculation regions and one vortex region in the combustor, and these recirculation regions affect the combustion process deeply, b ) increasing side - arm angle and moving side - air inlet position toward the fuel inlet can improve mixing and combustion characteristics, and increase the combustion efficiency, c ) when the angle between two air - inlets equals to 180
通過計算與分析,增進了對補燃室內摻混燃燒過程的理解,為固體火箭沖壓發動機補燃室設計提供了一些有意義的結果: 1補燃室內的流動十分復雜,存在三個迴流區和一個旋渦區,迴流區對摻混燃燒過程有重要影響; 2增大空氣入射角度、向前移動進氣道出口位置有利於增強頭部迴流區強度,增強摻混效果,燃燒效率上升; 3They are used either to treat polluted air before it is released into the environment or to admit air with very low dust concentration into a process
它們有兩種用途,一是用來過濾即將排放到環境中的廢氣,二是用來清潔的吸入的空氣並壓入下一進程(沖程) 。The project begins with the process of relating laws of vehicle emission, proposing a way to lower the engine emission of jy50qt by analyzing the 2 - stroke engine emission principle and the catalyze reaction. the experiments in this project are arranged with taguchi methods, optimized by using carburetor matching technology, catalyze conversion technology and second - air - recharge technology to jy50qt emission research in different period, and the test results meet with euroi requirement
本課題從研究法規的進程入手,通過對二沖程發動機排放污染的機理和催化反應的機理分析,運用化油器的匹配技術、催化凈化技術和二次空氣補氣技術分階段地對jy50qt的排放進行了全面的優化,並達到了歐洲的排放要求。In this paper, a matching platform for a model lh150 four stroke motorcycle engine is set up and a electronic fuel injection system is designed. the design of the electronic fuel injection system include the fuel supply system design, the intake pipe and throttle body design, the electronic control unit ( ecu ) develop, the way to use sensor of the system and the means to deal with sensor signal
本論文建立了一套針對lh150型四沖程摩托車發動機的匹配臺架,設計了一套用於摩托車發動機的電控燃油噴射系統,對發動機供油系統、進氣系統進行了設計和選配;建立了一套傳感器的使用和信號處理方法;設計了一套電控單元硬體,並初步確定了電控單元的控制方法。This paper is based on the theory of engineering thermodynamics. the research object is unclosed - cycle - form partial - flow two - stage impulse torpedo turbine. first we study the design condition of torpedo turbine
本文以工程熱力學為理論基礎,以魚雷開式循環部分進氣純沖動式復速級渦輪發動機為研究對象。This system captures the rack position signal and rotate speed signal of the fuel injection pump, and calculates the circulating fuel injection quantity by programming the computer. then the computer is programmed to control the daq board to generate a certain width pulse. finally, controlled by the pulse, the alcohol injection system injects a certain quantity alcohol into inlet manifold according to a setting diesel / alcohol proportion
該系統採用了在labview平臺上開發的pc總線?插卡式虛擬儀器系統,系統通過採集噴油泵的供油拉桿位置信號和轉速信號,利用計算機計算得出柴油的循環噴油量,再根據程序設定的柴油/酒精比例控制數據採集卡發出一定寬度的脈沖,控制低壓酒精噴射系統按比例將酒精噴入進氣歧管。The engine is tested on the dynometer using the software that can monitor the ecu ( electronic control unit ) internal dataflow. and the electronic control fuel injection system parameters ( e. g. position of throttle valve, engine speed, air temperature, engine temperature, duration of injection ) are acquired at many different working conditions of engine
本文以hirth3203二沖程汽油發動機為研究對象,利用開發的ecu內部動態數據流監測軟體進行發動機臺架試驗,獲取了在不同的油門開度和轉速下電控燃油噴射系統的一系列工作參數,如節氣門開度、發動機轉速、進氣溫度、氣缸溫度、蓄電池電壓以及噴油脈寬。The ram - compressed technology in ram - compressed rotor is the key of the rotating ramjet. we discussed it detailedly in some aspect such as theoretic analysis and numerical simulation and model test, and then point out that the essential of the ram - compressed technology is the air is compressed by the moving shock wave. the formula of parameter both sides the moving shock wave and
指出了旋轉激波壓縮是旋轉沖壓壓縮的主要方式,推出了旋轉激波壓縮的參數關系式和沖壓轉子進氣道和盤腔中的簡化運動方程和壓力方程,並通過對冷態流場的數值模擬及模型試驗研究驗證了上述理論分析結果,為旋轉沖壓發動機沖壓轉子的設計分析奠定了理論基礎。分享友人