1) cyclic variation
循环变动
1.
By measuring the cylinder pressure and calculating the heat release rate and cyclic variations,the combustion characteristics and cyclic variations of LPG/diesel blended fuel engine were studied under different fuel supply advance angles.
通过测试燃烧压力,计算瞬时燃烧放热率和燃烧循环变动率,研究供油提前角变化对液化石油气(LPG)/柴油混合料发动机燃烧特性和燃烧循环变动的影响。
2.
The peak combustion pressure that was wildly applied in the fields of cyclic variation and was very sensitive to the difference of combustion process was mainly researched.
以循环变动研究中应用最广泛,对燃烧过程差异反应最敏感的最高燃烧压力为研究对象,在全工况区域选取120个试验点,每个试验点测录12 000样本观测值,对样本容量及采样方法对最高燃烧压力循环变动评价参数的影响进行了全面研究。
3.
The inclined swirl characteristics of the system were measured on a steady flow rig,and the effects of the inclined swirl characteristics on the cyclic variation of combustion pressure were analyzed with the CB-466 combustion analyzer on the engine test-bed.
利用所研制的四气门汽油机可变斜轴涡流系统,在稳流气道试验台上研究了该系统产生的涡流特性,并在发动机试验台上利用CB-466燃烧分析仪研究了涡流特性对缸内燃烧压力循环变动的影响。
2) cycle-by-cycle variation
循环变动
1.
Based on an experimental study conducted on a single-point injection CNG engine,various approaches for analyzing cycle-by-cycle variation in spark ignition engine were investigated through the measured cylinder pressure and heat release rate curve.
通过单点电喷天然气发动机上的实验研究,分析了利用实测缸内压力和放热率曲线来分析研究点火发动机循环变动的各种方法,并阐述了各种方法的适用性以及不同表征循环变动的参数之间的关系。
2.
The maximum combustion pressure,the minimum instantaneous intake pressure,and the maximum exhaust pressure are respectively used as indicators to evaluate the characteristics of cycle-by-cycle variations in the cylinder,intake and exhaust pipes.
通过采集缸内、进气和排气瞬时压力信号试验测试小型高速汽油机循环变动。
3.
The cycle-by-cycle variations of the ethanol homogeneous charge compression ignition(HCCI) combustion have been investigated in a single cylinder engine modified from a CA6110 diesel engine.
在一台由CA6110柴油机改造而成的单缸发动机上进行了乙醇燃料均质压燃燃烧循环变动的研究。
3) cycle to cycle variation
循环变动
1.
The experiment on homogeneous charge compression ignition (HCCI) combustion with different octane rating fuels was carried out on a single cylinder engine to research cycle to cycle variation of HCCI combustion.
为研究均质压燃的燃烧循环变动规律,在单缸发动机上进行了不同辛烷值燃料的均质压燃试验。
4) cycle-to-cycle variation
循环变动
1.
The regression analysis on the cycle-to-cycle variation of the peak pressure-pmax and effective factors such as the angle of peak pressureφa is studied.
研究了采用低涡流进气、浅ω型燃烧系统的SD2100直喷高速柴油机的转速与负荷对循环变动的影响。
2.
As a significant character of the combustion process, the presence of cycle-to-cycle variation in gasoline engines limit the gasoline engines’operation areas and reduce its economy, power and emission control level.
汽油机的循环变动是汽油机燃烧过程的一大特征,它的存在限制了汽油机的运转范围,严重地影响着汽油机的动力性、经济性和排放性。
3.
The cycle-to-cycle variation test was carried on an economically controlled single-cylinder diesel engine and it was found that the injection duration varied from cycle to cycle.
在电控单缸柴油机上进行了燃烧循环变动试验研究,分析试验结果得知,单缸柴油机循环间喷油持续期存在变动,主要原因是电控系统瞬时转速的波动导致喷油驱动信号变动。
5) Cycle variation
循环变动
1.
The effect of excess air ratio on natural gas engine cycle variation was researched.
试验研究了过量空气系数对天然气发动机循环变动特性的影响,研究结果表明,当过量空气系数从1逐渐增大到1。
6) combustion cyclic variations
燃烧循环变动
1.
The effects of engine speed on combustion cyclic variations were analyzed when the cyclic equivalence ratio variations existed.
利用三维燃烧模型对稀燃CNG发动机的燃烧过程进行数值模拟,研究在引入过量空气系数的循环变动情况下,发动机转速对稀燃CNG发动机燃烧循环变动程度的影响。
补充资料：循环变动
循环变动又称周期波动，是指现象在为期较长的时间内呈现出的跌宕起伏。它不同于趋势变动，不是朝着单一方向的持续运动，而是呈现涨落相问的波浪式起伏变动。它也不同于季节变动，季节变动也是有高有低的交替变动，但季节变动有比较固定的规律性，且变动周期一般在1年以内；循环变动的规律不那么固定，变动的周期通常在1年以上，周期的长短、变动形态、波动有大小也不固定。例如产品通常有导入期、成长期、成熟期、衰退期、替代期等经济寿命周期；又如经济增长中繁荣%26mdash;衰退%26mdash;萧条%26mdash;复苏%26mdash;繁荣的循环，是最常见的循环波动。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条