查询词典 combustion engine

The NOx release characteristic of the single coal and blended coals during combustion is studied with tube furnace and one-dimension combustion experiment system, and the coal characteristic and combustion condition which have influence on the NOx emission in the process of pulverized-coal combustion are studied in this paper.

燃烧温度和燃烧区域的气氛对于NOx的生成有很大的影响。保证煤粉稳定燃烧时的最低的O2浓度就是煤粉低NOx燃烧的最佳O2浓度。

The effects of port injected n-heptane equivalence ratio and iso-octane direct injection timing are investigated experimentally and numerically. The results indicate that the combustion mode of iso-octane is dependant on the iso-octane direct injection timing corresponding to the stage of n-heptane HCCI combustion. In case of direct injection before the low temperature reaction of n-heptane, premixed combustion of the iso-octane occurs. In case of direct injection at the NTC period or the initial high temperature reaction stage of n-heptane, the iso-octane mainly undergoes premixed combustion.

进一步采用进气道预喷正庚烷，缸内直喷异辛烷，在没有火花点火和热EGR的辅助下利用预喷正庚烷HCCI燃烧产生活化热氛围的热作用和化学作用引燃缸内直喷高辛烷值燃料异辛烷，系统研究了不同预喷正庚烷当量比和缸内直喷时刻对直喷异辛烷燃烧模式、发动机效率和排放的影响，并用三维CFD耦合化学反应动力学对其燃烧过程进行数值模拟。

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本公司主要代理英国壳牌汽车养护用品，包括蓝珊瑚车用添加剂系列：引擎强力修复剂、高效动力修复剂、引擎高效保护神、引擎高效清洁剂、引擎止漏剂、高效电喷清洁剂、柴油增强改进剂、燃烧室清洁剂、冷却系统强力快洁剂、冷却系统快速高效止漏剂；黑魔力汽车美容系列：魔云顶级巴西棕榈至尊膏蜡、魔雨深层护漆极品蜡、魔雾无痕经典蜡、樱桃洗车香波、二合一皮革护理剂、抗UV内饰护理剂、免擦拭引擎光洁剂。

A great number of dynamometer experiments are carried out to investigate the effects of structure characteristics of the injector, configuration of combustion chamber, design of the bypass valve and fuel injection phasing on the performance, emission, fuel consumption of the engine during light load operating conditions. After a final optimization and other practical considerations, the control MAPs for the two-stroke DISI prototype engine are obtained. The torque performance, fuel consumption and emission economy of the engine is tested and compared with those of the original carbureted engine.

并且通过大量的发动机台架试验，分析了喷油相位和喷油器的结构参数、燃烧室形状、旁通孔的大小等参数对发动机低速低负荷工况下的性能、燃油消耗和排放的影响规律；通过最后的优化和实际的考虑，获得了最终的二冲程直喷发动机样机的控制MAP图，试验研究了其动力性、燃油经济性以及排放性能，还做了该样机和原化油器发动机的动力性能、燃油消耗率和排放性能的比较。

The effects of excess air coefficient and cylinder pressure on these spectra are also studied. The experimental resultS show that the three different combustion phases in a gasoline engine have different combustion characteristic spectra: a large number of atoms, molecules, ions and radicals which are in their excited states are existing during the ignition process, with the development of the combustion, the spectra intensities of CH, C2 radicals increase rapidly.

实验结果表明，汽油机三个不同的燃烧阶段具有不同的燃烧光谱特征：着火过程中，存在着大量的处于激发态的分子、原子、离子、自由基等活化中心的束缚态光谱，随着燃烧发展，CH、C2自由基的光谱强度明显加强；当减小过量空气系数时，光谱强度变弱并且着火延迟期增长；自由基特征光谱的光强变化曲线可以反映它们在燃烧过程中的浓度变化。

The boundary condition of the isochoric combustion process can be precisely controlled. And the disadvantageous influence on the isochoric combustion of the engine is avoided. Therefore, the combustion process and the factors of the influence on it can be clearly found.

可以实现对定容燃烧过程边界条件精确控制，剔除点燃式发动机定容加热过程中众多杂乱影响因素，从而清晰地反映出燃烧过程及其影响因素的作用。

The high frequency combustion instability in liquid rocket engine LRE is analyti cally studied by usin g CFD methods.The comprehensive model and governing equations for numerical simu lation of high frequency combustion instability are presented.The PISO and MacCo rmack algorithms are compared in this study.Both methods can successfully handle combustion instability analysis.

应用CFD方法对液体火箭发动机中的高频燃烧不稳定性进行了分析研究，建立了液体火箭发动机不稳定燃烧数值模拟的综合模型和控制方程，比较了PISO和Ma cCormack两种算法，得出了两种算法均能成功应用于不稳定燃烧分析的结论。

Creation mechanism of combustion noise was discussed,and the effect of the maximum combustion pressure,the maximum pressure rise rate and high frequency pressure oscillation on diesel engine combustion noise with different pilot injection strategies adopted were analyzed.

讨论了燃烧噪声的产生机理，分析了直喷式柴油机采用不同的预喷射策略，气体最高燃烧压力、最大压力升高率及气体高频压力振荡对燃烧噪声的影响。

A new method of fuel design to control HCCI combustion was given. n-heptane/iso-octane was controlled real-time on a single-cylinder HCCI combustion engine. The test result shows that the equivalence ratio of n-heptane in mixture decides the HCCI ignition and controls the combustion phase of HCCI.

根据燃料设计的思想，提出了混合燃料比例实时优化的均质充量压缩着火燃烧控制新方法，并在HCCI单缸发动机上进行了HCCI异辛烷／正庚烷实时控制试验。

Engine room counting fee management application, project structure and expansion solution guidebook A PC product need analysis: Engine room application besides need towards function had special request outside, other summarize to have 4:00:(1) PC fundamental that PC that stability, engine room use is up is everyday 24 hours request for be placed inning openning the machine and circulating the appearance, stability towards PC having more and strictly, then request PC at any time high low temperature start, stanza can manage, power supply manage, inside memory manage and keep on worked deathless machine very and strictly, this is not is what DIY can make to, these factors must be in the product system design inside factor that consider, at the same time at the factor that the machine produce adopt a 48 hour development test the machine can discover latent influence system stability;(2) PC of can manage the sex, engine room as if teach Teach the profession's electronics classroom, and management engine room as if management teacher to electronics teacher, and this is the PC network management, namely on-line management, for example early the machine of many sets proceed together the OS to install, application the procedure install, hardware management, usage supervise and control and report to the police the etc.

机房应用除了对性能有特殊要求之外，其它的需求概括起来有4点：（1）PC的稳定性，机房用的PC基本上是每天24小时处于开机及运行状态，对PC的稳定性有更加严格的要求，即对PC 随时高低温启动、节能管理、电源管理、内存管理以及持续工作不死机的要求非常严格，这并非是DIY所能做到的，这些因素必须是在产品系统设计中考虑的因素，同时在机器生产时采用48小时动态考机才能发现潜在的影响系统稳定性的因素；（2）PC的可管理性，机房如同教育行业的电子教室，对机房的管理如同对教师对电子教师的管理，这就是PC的网络管理，即在线管理，例如初始化多台机器并行OS安装、应用程序安装、硬件管理、使用监控以及报警等管理功能，针对机房PC，专门开发机房管理软件，实现对机房PC的管理；（3）易用性要求，机房PC如同傻瓜PC，在客户端不需要安装、设置，只须开机，满足易用性要求；（4）健康要求：静电、电磁辐射指标、显示器防眩、键盘鼠标抗菌设计及符合人体公学设计。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。