lean gas 中文意思是什麼
lean gas
解釋
貧煤氣-
Think of it this way : the gut community in obese mice is like a fuel - efficient car, extracting more energy from food and passing more along to its host than its gas - guzzler counterpart in lean mice
可以這樣想象：肥胖老鼠的腸道菌落就像一輛高效燃油小轎車，與瘦弱老鼠菌群大量消耗汽油相比，它從食物中獲得更多的能量並供給宿主。 -
Investigations also show that the catalyst shows good heat resistance in the presence of water and demonstrates high capability for mitigating sox poisoning. in the end, a novel way controlling combustion is employed in a 1. 342l s. i. engine, in which lean - burn, fast burn ( tumble ) and delay ignition make the engine provide much cleaner exhaust gas than that of a conventional premixed s. i. engine
最後綜合採用機內凈化和排氣后處理并行策略，即稀燃、快燃（滾流） 、推遲點火的可控燃燒新方案，結合分子篩稀燃催化器，在稀燃發動機典型工況下，在保證燃油經濟性較原機改善14 . 8 %時， nox的排放大幅降低。 -
Are about 12 billion tons. the main types of coal are coking coal, gas bituminous coal, lean coal and anthracite, etc. xiangning coal field is one of the three biggest metallurgical coal bases of the whole country, with the characteristics of thick bed,
首屈一指的煤炭資源，儲藏面積1 . 54萬平方公里，占總面積的5 % ，總儲量960億噸，探明儲量120億噸，主要煤種有主焦煤氣肥煤貧肥煤瘦煤無煙煤等，其中鄉寧主焦煤為全國三大主焦煤基地之一，而且煤層厚埋藏淺易開采。 -
Effects of different fuel - air ratios and different geometric parameters of dual - stage swirler ( such as inner diameters of the primary swirl and secondary swirl passages, outer diameters of the secondary swirl passages, vane angle of the primary and secondary swirler, the distance of the flare exit from throat etc ) on combustion performances are studied experimentally. the experimental results show that radial profiles of the outlet gas temperature 、 combustion efficiency 、 emissions of co2 、 co and nox and lean blowout are affected with different degrees by the different geometric parameters of dual - stage swirler and the arrangement of primary holes
在不同油氣比下，不同的雙級旋流器幾何參數（例如:一級與二級旋流器出口內徑d 、葉片安裝角、二級旋流器出口外徑d 、二級旋流器的喉道到出口截面的距離l和喉道前後的圓弧半徑r以及主燃孔孔布局等）對單頭部環形燃燒室的出口溫度分佈、燃燒效率、貧油熄火油氣比以及污染物（ co _ 2 、 co和nox ）排放等燃燒性能的影響規律進行了研究。 -
The paper introduces development and research of foreign gas engines and describes briefly lean - burn combustion, egr, structure of pre - combustion as well as application of turbocharger and miller cycle and analyzes the effect of the technologies on emission and efficiency of engines
本文介紹了目前國外氣體機的發展技術研究現狀，並對稀燃技術、 egr技術、預燃室的結構、增壓器的採用和米勒循環的應用等技術作了簡要介紹，簡要的分析了這些技術對發動機的排放、效率的影響。 -
Numerical simulation on the gas - solid multiphase flow in new type pulverized coal impact rich / lean burner is presented in it. under the guidance of the theory of computer aid test ( cat ), the dissertation uses particle - particle random impact model and the fluctuating - spectrum - random - trajectory ( fsrt ) model to simulate the gas phase flow and the particle phase flow based on the lagrange approach, compared with experimental results, and reaches satisfied efforts
在cat計算機輔助試驗理論的指導下，結合實驗研究，本文採用包括脈動頻譜隨機軌道（ fsrt ）模型、顆粒和顆粒的隨機碰撞模型等先進的氣固多相流模型，在高濃度氣固多相流動數值模擬這一前沿研究方面得到了很有價值的結果。 -
Numerical analysis of intake process in mpi lean burn natural gas engine
電噴稀薄燃燒天然氣發動機進氣過程的數值解析 -
Investigations on a lean burn engine show that nox can be removed by using hc and co in the exhaust gas as reducing agents. when the catalyst is used, the rate of nox conversion can reach a maximum of 74. 4 % at 400
稀燃發動機臺架實驗結果表明，催化劑抗硫中毒、抗高溫以及抗水蒸氣能力較強；最大nox轉化效率達74 . 4 % ；最大nox轉化率排氣溫度點在400附近。 -
Engine, the fuel consumption decreases by about 19. 1 %. on the other hand, the fuel consumption of quasi - homogenous mixture lean combustion decreases by about 6. 5 % compared with homogenous lean mixture combustion. three - ways catalyst ( twc ) + optimizing afr technology is used to remove nox emissions in oxygen containing exhaust gas
本研究運用三效催化器+空燃比優化控制技術，利用三效催化器能一定程度降低nox排放的特點，控制發動機在優化空燃比下工作，將稀燃後排氣中剩餘不多的nox進一步催化。
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