1) fixed ignition
固定提前角点火
2) Spark advance angle
点火提前角
1.
Whether the crank angle corresponding to the second derivative maximum value of net pressure was at top dead center could be used to estimate the optimal spark advance angle.
由净压力2次导数最大值所在曲轴转角是否在上止点可以判断发动机是否处于最佳点火提前角下工作,通过与由发动机输出扭矩确定的最佳点火提前角相比较,证明净压力2次导数最大值方法可以精确地确定天然气掺氢发动机的最佳点火提前角。
2.
The spark advance angle was controlled by the knock index and it make the engine work in the trace knock level.
通过余弦形状的PVDF薄片,设计出具有紧凑结构的振动传感器,并设计了实用的电荷放大电路,最后用其来检测发动机的爆震点,从而对发动机点火提前角进行控制,使发动机工作在轻微爆震状态,通过实验表明PVDF振动传感器测量简单、更方便、更准确,经济性和动力性得到了提高。
3.
The control principle of spark advance angle was analyzed.
分析了点火提前角的控制原理,通过试验研究了起动过程中不同冷却水温度下混合动力发动机点火提前角的修正对HC排放、催化剂起燃特性以及转化效率的影响规律,并对基于催化剂起燃特性的点火提前角修正值进行了重新标定。
3) ignition advance angle
点火提前角
1.
Modeling and analysis of ignition advance angle of automobile engine;
汽车发动机点火提前角建模分析
2.
On this basis it makes some study on the combustion process of hydrogen-fueled IC engine by changing the ignition advance angle and equivalence ratio of the model.
在此基础上,进行了点火提前角和燃空当量比对氢内燃机燃烧过程的影响研究,为合理组织氢内燃机的燃烧过程研究提供了依据。
3.
The experiment results showed that,the CO emission was greatly influenced by fuel air ratio,ignition advance angle,intake absolute pressure and fuel component,the HC emission was reduced with the increase of hydrogen mixing ratio,the influence of ignition advance angle on HC emission was decreased when the intake absolute pressure was increased,and the NOx emission was i.
试验结果表明,CO的排放浓度受燃空当量比、点火提前角、进气管绝对压力和燃料成分的影响较大;HC排放浓度有随掺氢比的增大呈降低的趋势,提高进气管绝对压力,点火提前角对HC排放浓度的影响减弱;天然气掺氢气后NOx排放升高。
4) advance ignition angle
点火提前角
1.
Through establishing the numerical model of natural gas engine-driven heat pump system,the runtime characteristics of natural gas engine and heat pump in heating conditions are analyzed by changing the advance ignition angle,excess air ratio,compression ratio,and engine speed.
通过建立天然气发动机驱动热泵系统的数学模型,研究了供热工况下,点火提前角、压缩比、过量空气系数、发动机转速等参数对天然气发动机及整个热泵系统运行性能的影响,为天然气发动机的优化设计提供一定的理论依据,并且预测了燃气热泵的性能,证明了该系统具有较好的部分负荷特性。
2.
Through establishing the numerical model of natural gas engine-driven heat pump system, the runtime characteristics of natural gas engine and heat pump in cooling conditions are analyzed by changing the advance ignition angle, excess air ratio, compression ratio, engine speed.
通过建立天然气发动机驱动热泵系统的数学模型,研究了制冷工况下,点火提前角、压缩比、过量空气系数、发动机转速等参数对天然气发动机及整个热泵系统运行性能的影响,为天然气发动机的优化设计提供一定的理论依据,并且预测了燃气热泵的性能,证明了该系统具有较好的部分负荷特性。
3.
Through establishing the numerical model of natural gas engine-driven heat pump system,the runtime characteristics of natural gas engine and heat pump in heating conditions are analyzed by changing the advance ignition angle,excess air ratio,compression ratio,and engine speed.
通过建立天然气发动机驱动热泵系统的数学模型,研究了供热工况下,点火提前角、压缩比、过量空气系数、发动机转速等参数对天然气发动机及整个热泵系统运行性能的影响,为天然气发动机的优化设计提供一定的理论依据,并且预测了燃气热泵的性能,证明了该系统具有较好的部分负荷特性。
5) Ignition timing
点火提前角
1.
A new ignition timing measuring system is established by utilizing virtual instrumentation technology for adapting to the modern gasoline automobile ignition system.
汽车发动机点火提前角测试系统由传感器、信号调理模块、数据采集卡、个人计算机、闪光装置等组成。
2.
The experimental results showed that ignition timing has great effect on power output,economy of fuel and characteristic of exhaust gas.
进行了进气管喷射的氢发动机点火提前角对发动机性能影响的研究,试验指出了点火提前角对氢发动机动力性,经济性和排放性能有较大影响。
6) spark timing
点火提前角
1.
And some important technical methods such as increasing compression ratio, selecting suitable spark plug, optimizing the spark timing are employed to improve the power perfor.
采用进气预热来保证燃料的雾化效果和混合气的形成质量、缩短暖机时间;采用M90甲醇燃料和PTC加热器来改善甲醇发动机冷起动性能;采用提高压缩比、选配火花塞、调整点火提前角等多项措施来确保甲醇发动机的动力性、燃料经济性、排放性和工作可靠性,注意严格限制发动机缸内最大爆发压力。
2.
The effects of spark timing, air-fuel ratio, engine rotative speed and engine load on engine exhaust emissions within the electronic gasoline injection system of modern vehicle engines have been investigated.
研究了现代汽车发动机电控汽油喷射系统中点火提前角、空燃比、发动机转速和负荷对排放的影响。
补充资料：固定角势能面
分子式：
CAS号：
性质：设反应为三原子体系，且相互位置为非共线关系。如图，其中rCA=(rAB+rBC-2rABrBCcosφ)1/2故体系相互作用势能V可表示为rAB、rBC、rCA或rAB、rBC、φ的函数，即V=V(rAB，rBC，rCA)=V(rAB，rBC，φ)如以V为函数，rAB、rBC、φ为独立变量构作势能面图（图暂缺），则是一个超曲面。今固定φ角，则V=V(rAB、rBC)，如φ=180°时即为共线势能面。这类固定碰撞角构成的三维及二维势能面目p固定角势能面。也称定角面等值线图(fixed-angle surface contour diagram)。
CAS号：
性质：设反应为三原子体系，且相互位置为非共线关系。如图，其中rCA=(rAB+rBC-2rABrBCcosφ)1/2故体系相互作用势能V可表示为rAB、rBC、rCA或rAB、rBC、φ的函数，即V=V(rAB，rBC，rCA)=V(rAB，rBC，φ)如以V为函数，rAB、rBC、φ为独立变量构作势能面图（图暂缺），则是一个超曲面。今固定φ角，则V=V(rAB、rBC)，如φ=180°时即为共线势能面。这类固定碰撞角构成的三维及二维势能面目p固定角势能面。也称定角面等值线图(fixed-angle surface contour diagram)。
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