Driving Cycle and Duty Cycle are mainly applied on the evaluation of the vehicle and engine performance. So in order to make an accurate evaluation on the fuel economy and emission level of the vehicle and engine, the driving cycle and duty cycle have to represent the real condition of the vehicle and engine.
车辆行驶工况以及发动机循环工况主要用于车辆及发动机性能的评价，其能否反映车辆及发动机在特定交通条件下的真实工况直接关系到能否对车辆和发动机的经济性能和排放性能进行合理的评价。
An engine cyclic variation model has been built by using the residual gas temperature for the n-th cycle as the input of the model, through constant pressure intake process, adiabatic compression process, constant volume combustion process, adiabatic expansion process, adiabatic blow down process and constant pressure exhaust process to approximate the thermodynamic processes in the cylinder, finally the residual gas temperature for the (n+1)-th cycle can be estimated.
基于循环间变动的排气温度建立了一个发动机循环变动模型。在这个模型中，第n个循环的排气温度作为模型的输入，通过定压进气过程、绝热压缩过程、定容燃烧过程、绝热膨胀过程、定容放热过程和定压排气过程来近似汽缸内的热力学过程，最后得出第n+1个循环的排气温度。
An irreversible model for Stirling gas regenerative engine cycle is presented in this paper, in which heat resistance and regenerative losses are considered.
斯特林循环热机具有效率高、噪音低、振动小和自启动等特点，一直受到热机爱好者的重视，这大大地促进了斯特林热机循环理论的研究。
Juan Pablo suffered an engine failure six laps from the end of a two race engine cycle.
蒙托亚的赛车引擎在经过两场激烈的比赛后，在距离终点还有六圈时出现故障。
Sump outside, with two lubrication cycle, improved the engine lubrication and the durability.
机油箱外置，两循环润滑油路设计，增加了发动机润滑效果，提高了耐久性。
By solving axisymmetric Navier-Stokes equations in conjunction with the chemistry, numerical simulation of two cycle of pulse detonation engine was performed, and a detailed chemical mechanism of H2-O2-N2 system, which included 19 element reactions and 9 species, was involved.
对脉冲爆轰发动机两次循环工作过程进行轴对称数值模拟，考虑了包含19个基元反应和9种组份的H2-O2-N2详细化学反应动力学机理，通过改进的ISAT方法减少反应化学的计算时间。
Pulse detonation engine is a new concept of propulsive engine which uses high temperature and pressure gas produced by intermittent or pulsant detonation wave to generate thrust. PDE has many desirable advantages, including high thermal dynamic cycle efficiency, low specific fuel consumption, high thrust/weight and specific impulse, simple configuration, and will become propulsive device of aviation and spaceflight aerocraft in 21st century.
脉冲爆震发动机是一种利用间歇式或脉冲式爆震波产生的高温、高压燃气来产生推力的新概念发动机，这种发动机具有循环热效率高、燃料消耗率低、推重比高、比冲大、结构简单等优点，将成为21世纪新型的航空航天飞行器的动力装置。
The transfer function among engine effective torque, speed and cycle fuel feeding are established.
建立了发动机有效扭矩、转速与每循环供油量之间的传递函数。
At last, the duty cycle of engine was developed depended on the test results.
最后，结合试验结果建立了城市公交车发动机台架试验循环。
Come back to be able to start engine to starting archives vogue when ignition switch, cycle ignition is normal the engine when archives instantly flameout, use contact formula the engine of ignition system, basically be ignition coil ballast resistor or
当点火开关旋至起动档时尚能起动发动机，旋回点火正常档时发动机立即熄火，采用触点式点火系统的发动机，主要是点火线圈附加电阻或
Piston cooling; Diesel engine; Orthogonal reciprocating tube; Heat transfer; Thermodynamic cycle; Combustion chamber
中文关键字活塞冷却；柴油引擎；正交往复式通管；热传；热力循环；燃烧室
ideal gas; elliptical reversible cycle; heat engine efficiency
为了比较，本文采用不同的方法对这个问题进行分析，得到与文献[1]不同的结果。1理想气体的椭圆形循环过程中的吸、放热分析设在一个循环系统中，理想气体的压强和体积满足计算机
The index of Google/new index cycle wants than most search engine short.
Google的索引/重新索引周期比大多数搜索引擎要短。
There will be several knocks during an engine work cycle since the knock occurs around the top dead center and the bottom dead center, also the impact of major thrust side is fierce when the piston is near the top dead center. It has been found that the impact force of major thrust side is stronger than that of minor thrust side.
通过仿真分析发现，在发动机一个完整工作周期内，活塞与缸套发生多次敲击，活塞与缸套的敲击主要发生在上止点和下止点附近，以上止点附近活塞对气缸主推力侧敲击最为剧烈，活塞对气缸主推力侧的碰撞冲击力明显高于次推力侧。
Torpedo turbine engine; open loop cycle; nozzle efficiency; exit speed; optimization design; system modeling
鱼雷涡轮发动机；开式循环；喷管效率；出口速度；优化设计；系统建模
At last, the thrust and specific impulse of turbine/ramjet combined cycle engine were calculated along flight trajectory.
最后给出了沿飞行轨迹的涡轮冲压组合发动机推力、比冲和喷管喉道面积的变化。
A staged combustion cycle engine maximizes the engine's specific impulse by passing the turbine flow through the thrust chamber to develop thrust.
1分级燃烧循环发动机的最大引擎的具体冲动通过了汽轮机通流通过推力室发展的主旨。
Digital simulation is an important step for torpedo turbine engine design. This paper investigates the modeling and simulation of unclosed cycle and partial flow two-stage impulse torpedo turbine in design condition and two non-design conditions. The control modes of turbine in non-design conditions are discussed.
进行鱼雷涡轮动力装置数字仿真是设计涡轮机的重要步骤，为此，该文针对鱼雷涡轮机设计和研制的需求，采用理论分析、经验推导和实验研究相结合的方法建立了鱼雷开式循环部分进气纯冲动式复速级涡轮发动机设计工况及2 种常见变工况的数学模型，着重讨论了变工况过程涡轮机的调节控制方案，提出了简便易行的开关喷嘴控制方法，并对其进行了数字仿真研究。
This requires running the engine through a simulation of the operating cycle of the machine to which it will be fitted.
这就需要运行引擎通过模拟运行周期的机器，它会安装。
On the basis of engine idiocratic mathematical model, using the origin underway accelerate time and the oil consumption at the cycle of multi-working conditions as the objective functions of the power performance and the economy performance respectively, and then transform it to a single objective function by using the linear adding.
在建立发动机特性数学模型的基础上，以原地起步连续换档加速时间和多工况循环使用油耗作为衡量动力性和燃油经济的2个分目标，采用线性加权组合的方法将其转换成单一目标函数，建立了汽车动力传动系优化数学模型，利用惩罚函数法对此模型进行了优化，实例计算表明，应用该方法对汽车动力传动系进行优化匹配分析时，整车综合性能均有显著改善。