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The purpose of the invetion is to effectively stop the blowoff of an injected fuel into an exhaust port when the opening and closing of valves are overlapped with each other by properly setting the fuel injection direction of a fuel injection device mounted so as to face the intake passage of an internal combustion engine.

提供一种内燃机的进气结构,适当设定被安装成对着内燃机的进气通道的燃料喷射装置的燃料喷射方向,有效防止在气门开闭动作时间的重合期间朝向排气口的喷射燃料的喷泄。

According to the principle of energy conversion and conservation in fuel combustion, the study is made to automatically control boiler combustion and to supervise boiler thermal efficiency real time on line. Representing fuel caloricity signal and on line thermal efficiency signal with the flame parameter, the combustion automatic control system has been successfully put into operation.

引 言在电力工业生产中,发电厂锅炉消耗大量的燃料,如何提高锅炉运行效率以节约能源,是人们长期力求解决的课题,从燃料燃烧的能量转换和守恒原理出发,对锅炉燃烧自动控制系统和锅炉热效率在线实时监测进行了一系列的探讨,找到了一个用火焰参数代表燃料发热量的能量信号和在线热效率信号。

The exchange film can be used in micro direct carbinol fuel battery with high stability good for reducing battery sizes to improve utility of micro liquid fuel materials.

使得用本发明进行改性处理的质子交换膜可用于微型直接甲醇燃料电池,可使微型甲醇燃料电池稳定性得到提高,有利于单体电池尺寸的进一步减小,促进微型液体进料直接甲醇燃料电池的实用化。

Gas diffusion layer is one of the most important components in proton exchange membrane fuel cell. The contact resistance between current collector and gas diffusion layer is an important part of the total resistance of fuel cell and is also a key factor led to the power loss of PEMFC.

气体扩散层是质子交换膜燃料电池的重要组件,其与极板之间的接触电阻是燃料电池内阻的重要组成部分,也是导致燃料电池功率损失的重要因素。

Hydrogen is the best fuel for fuel cells, hydrogen economy in the coming era of hydrogen fuel cell is converted into electrical energy the best energy conversion device.

氢是燃料电池的最佳燃料,在未来的氢经济时代,燃料电池是将氢能转化为电能的最优能量转换装置。

Because of the fuel-rich propellant's high heat value and combustion temperature, the common stainless steel crucible and oxygen bomb's parts are always burned in the combustion heat testing process. In order to realize the proper testing of combustion heat, some fireproof materials characteristics and their application in the combustion heat testing of fuel-rich propellant were studied. Those fireproof materials include acid washing asbestos, C/C compound materials, Al2O3 chinaware and tungsten crucible.

含金属富燃料推进剂由于热值高、燃温高,在燃烧热测试过程中普通的不锈钢坩埚及附件经常被烧毁,为了正确测试金属富燃料推进剂燃烧热,对酸洗石棉、碳/碳复合材料、Al2O3陶瓷坩埚和金属钨坩埚的基本耐烧蚀特性和在金属富燃料推进剂燃烧热测试中的应用进行了实验研究。

How factors affecting NO deoxidized efficiency under gas environment are discussed here and the importance of char reburning to deoxidize NO in t

本文首次进行了生物质燃料作为再燃燃料还原NO的试验研究,研究表明生物质燃料再燃还原NO可以取得非常好的效果,在一定的条件下可以达到50

Four main measures for improving thermal stability including fuel refinement,fuel deoxygenation ,addititves and surface modification were introduced.

对提高燃料热安定性的 4种主要措施进行了介绍,包括燃料精制、燃料脱氧、加入添加剂和表面处理。

Integrating both advantages of hydrogen fuel cell and organic fuel cell, the fuel cell satisfies dual requirements of operating at low power and high power, providing features of low cost, simple structure and easy of implementation.

该电池集现有以氢为燃料和以有机燃料燃料的电池的优点于一身,可同时满足低功率和高功率运行对电池的双重要求,不仅成本较低,而且结构简单,易于实施。

Some conclusions are followed:(1)the reaction ratio of boron is 12% in primary combustion;(2)the degree of agglomeration can be decreased adopting boron coated with AP;(3)the content of oxygen is very important for afterburning efficiency;(4)the afterburning efficiency will be changed with different air-gas ratio;(5)the head distance of after-burning chamber is increasing, the circumfluence in the head of after-burning chamber is stronger and the distribution of fuel backward the after-burning chamber is more well-proportioned.(6)the combustion efficiency of DR will be improved by increasing the area of fuel nozzle.(7)the angle between dual air-inlets have complex influence with the combustion of DR.

通过本项研究,取得如下结论:(1)一次燃烧硼反应比例在12~15%之间;(2)AP包覆硼,可以降低硼结团度,有利于一次燃烧喷射效率的提高,也有利于硼在补燃室进行二次燃烧;(3)进气空气中的氧含量对二次燃烧非常重要;(4)对于一定配方的含硼富燃推进剂,不同的空燃比,二次燃烧效率不同;(5)补燃室头部距离的增加能增强补燃室头部回流以及提高燃料在补燃室后段分布的均匀性;(6)在一定范围内,增加一次燃气喷嘴面积能提高冲压发动机燃料的燃烧效率;(7)进气道夹角对补燃室内燃料的燃烧影响复杂。

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