共查询到20条相似文献,搜索用时 62 毫秒
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介绍了3820kW客、货运内燃机车的设计思想、总体布置、主要技术特性、动力装置、结构特点等.3820kW机车采用了12V280ZJ型柴油机,该柴油机安装了电子喷射装置. 相似文献
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针对16V280ZJ系列柴油机机体的穴蚀故障,从穴蚀部位、影响气缸套振动的因素、柴油机结构等方面分析了产生穴蚀的原因,提出了预防16V280ZJ系列柴油机机体穴蚀的措施、建议及穴蚀机体的修复方法。 相似文献
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介绍了戚墅堰机车车辆厂研制的NZJ1型准高速内燃动车用12V280ZJ型柴油机起动试验的原理和方法,分析了蓄电池的输出特性、柴油机发火点的转速以及如何合理设计起动发电机等。 相似文献
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针对一起16V280ZJ型柴油机连杆断裂故障,通过对断口的宏观、微观分析,找出了引起连杆断裂的原因,并对16V280ZJ型柴油机连杆的修理及使用提出了建议。 相似文献
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对东风4型机车12V240ZJ型柴油机机体破损情况进行了描述.选用焊接法对故障机体进行了修复,介绍了具体焊接工艺过程及注意事项. 相似文献
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1 引言
16V240ZJ型和16V280ZJ型柴油机都采用单体泵,16个喷油泵的供油齿条通过2根供油拉杆控制。 相似文献
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Javad Zareei Abbas Rohani Wan Mohd Faizal Wan Mahmood 《International Journal of Hydrogen Energy》2018,43(25):11639-11651
At the present work for improving the engine performance and decrease of emissions, a port injection gasoline engine is converted into direct injection. Engine performance behavior was investigated by AVL Fire software with adding hydrogen to natural gas from 0% up to 30%. Validation of the simulated model and experimental results show good confirmation. To determine the relationship between independent variables engine speed, ignition timing, injection timing and H2% versus the dependent variables including engine performance parameters, specific fuel consumption, CO and statistical analysis models were used. Comparison between different errors models shows that Radial basis function model with training algorithm Bayesian regularization back propagation can estimate better engine performance variables. The results showed that adding hydrogen to natural gas cause the output power, torque, fuel consumption efficiency increase and specific fuel consumption drop. Also, CO decreases when ignition and injection timing be advanced and engine speed reaches to its largest. 相似文献
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A high-pressure hydrogen injector was designed and developed in the laboratory. The injector was hydraulically operated by a separate pump. Measurement of injection characteristics on a bench stand showed very repetitive performance of the injector. The injection system was used to supply hydrogen fuel to a single-cylinder spark ignition engine. Results of the tests showed that the engine performance was superior to that achieved with carbureted gasoline fuel. 相似文献
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分析了发动机缓速器的工作过程及其制动能力,介绍了两种典型发动机制动的机构特征,工作原理及性能特点等,对目前最新的发动机缓速器技术进行了比较全面的分析. 相似文献
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Using finite-time thermodynamics, the relations between thermal efficiency, compression and expansion ratios for an ideal naturally-aspirated (air-standard) Miller cycle have been derived. The effect of the temperature-dependent specific heat of the working fluid on the irreversible cycle performance is significant. The conclusions of this investigation are of importance when considering the designs of actual Miller-engines. 相似文献
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James R. Senft 《国际能源研究杂志》2002,26(12):1087-1101
This paper combines the author's work on mechanical efficiency of reciprocating engines with the classic Schmidt thermodynamic model for Stirling engines and revisits the problem of identifying optimal engine geometry. All previous optimizations using the Schmidt theory focused on obtaining a maximal specific indicated cyclic work. This does not necessarily produce the highest shaft output. Indeed, some optima based upon indicated work would yield engines that cannot run at all due to excessive intrinsic mechanical losses. The analysis presented in this paper shows how to optimize for shaft or brake work output. Specifically, it presents solutions to the problem of finding the piston‐to‐displacer swept volume ratio and phase angle which will give the maximum brake output for a given total swept volume, given temperature extremes, a given mean operating pressure, and a given engine mechanism effectiveness. The paper covers the split‐cylinder or gamma‐type Stirling in detail, serving as a model for similar analysis of the other Stirling engine configurations. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献