advance vt. 1.進,推進;促進(生長),助長;撥進(時針),增進;提早,提前。 2.使升級,提升。 3.提高,抬高,漲,加(價等)。 4.提出(意見等),提倡。 5.預付,預支;借貸。 6.前去(某地)做先遣工作。 advance the hour hand 向前撥動時針。 advance sb. to the rank of colonel 提升某人為上校。 advance sb. a month's salary 預支給某人一個月的薪水。 vi. 1.推進,上進,前進,向前發(fā)展,進步。 2.提高,晉升。 3.漲價,騰貴。 4.【軍事】前進,進攻 (against; on; upon)。 5.從事先遣工作。 6.(顏色等)醒目。 advance in price 漲價。 advance in knowledge 增進知識。 advance in rank 升級。 deep colours advance 深的顏色醒目。 advance by rushes 突飛猛進。 advance in the world 發(fā)跡,出頭。 advance on [toward] a place 向某地推進。 n. 1.前進,進展;增進,進步;向上,晉升 (in rank)。 2.騰貴,昂貴,上漲。 3.預付;墊款,貸出款項。 4.〔常 pl.〕接近;友好的表示;求愛。 5.【軍事】前進,進攻。 6.事先寫好的新聞報導。 encourage [repel] sb's advances 鼓勵[阻礙]某人接近自己。 academic advances 學術成就。 an advance sample 訂貨小樣。 His advances were rejected. 他的友好的表示被拒絕了。 Sound the advance. 奏進行曲,吹前進號。 a temporary advance 暫墊款。 be in advance of在…之前;比…進步;高出,優(yōu)于,勝過 (He is far in advance of his class. 他在班上是尖子)。 be on the advance 漸漲。 in advance 1. 預先,事先。 2.在先頭,在前面 (pay in advance 預付。 receive in advance 預收)。 make advance 1. 墊款,先付,預付。 2. 接近(某人);表示友好;求愛 (to)。 with the advance of 與…俱進地,因(年)老而,因(夜)深而。 adj. 〔只作修飾語〕前進的;先頭的;預先的。
Advanced gas engine test - bed is tested repeatedly to collect and analyze the data parameter of the injection advance , pressure compare and outside characteristics of the supercharging and mid cooling diesel - engines 采用先進的內燃機試驗臺架反復測試,對增壓中冷柴油機的供油提前角、增壓壓比、外特性等各項性能參數(shù)進行數(shù)據(jù)采集,并對所采集的數(shù)據(jù)進行相關分析。
The best compression ratio and fuel injection advance angle are calculated through mess optimization calculation program of language c . on the basis , optimization simulation of inlet and exhaust timing has been carried with the diesel engine working model to increase diesel engine ' s volumetric efficient 在此基礎上,利用柴油機工作過程模型,對進排氣正時進行了優(yōu)化計算,以提高柴油機的充氣效率,改善燃燒性能,為進一步改善該機性能指明了方向。
A new calculation method for optimizing diesel engine performance , called nonlinear regression - mess method , is put forward . in this paper , 25 groups of simulated values are calculated from the diesel engine working model , specific fuel consumption , peak pressure , rate of pressure rise , nox and peak temperature are fitted into explicit function about compression ratio and fuel injection advance angle 本文利用柴油機工作過程模型,得出25組模擬計算數(shù)據(jù),利用非線性回歸將油耗、最大爆發(fā)壓力、壓力升高率、 no _ x濃度及最高燃燒溫度擬合成壓縮比和噴油提前角的顯函數(shù),并用網(wǎng)格法進行優(yōu)化,用c語言編制了優(yōu)化計算程序,得出最佳的壓縮比和噴油提前角,使其優(yōu)化匹配。
So it is proved that the working model is right , and on the basis , the influences of the compression ratio and fuel injection advance angle on the diesel engine ' s combustion performance are studied . ( 2 ) energy resource and environment protection are two important problems that diesel engine is faced with . so in this paper the constrained optimization is studied in order to decrease fuel consumption within the limitation of the regulation on exhaust emission and power output ( 2 )能源和環(huán)境保護是柴油機存在和發(fā)展的兩大問題,因此本文在滿足排放法規(guī)及柴油機動力性的基礎上,以降低油耗為主要研究目標,進行有約束條件的優(yōu)化計算,并提出了一種新的柴油機工作過程優(yōu)化計算方法? ?非線性回歸?網(wǎng)格法。
The performance experiments of emulsified diesel oil are done on a 1135 diesel engine . by a lot of experiment data and charts , the factors that influence the combustion effect are analyzed , including the factors of emulsified fuel self such as emulsifiers , water content , emulsifying way , and the factors of diesel engine such as fuel injection advance angel , injection pressure , load , model of engine , and so on 在1135柴油機上進行了乳化柴油的臺架試驗,通過大量試驗數(shù)據(jù)及圖表分析了影響乳化油燃燒效果的因素,包括乳化油自身的因素如乳化劑、含水量、乳化方法等,以及發(fā)動機的狀況與參數(shù)如噴油提前角、噴油壓力、工況、機型等。