3820kW内燃机车的研制

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.     

16V280ZJ系列柴油机机体穴蚀原因分析及预防措施

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。     

12V240ZJ6E型柴油机简介

12V240ZJ6E型柴油机是根据我厂开发大功率调车机车的要求而研究设计的新型柴油机.对12V240ZJ6E型柴油机总体结构、主要特点以及主要技术参数等做了全面介绍.台架性能试验结果表明,12V240ZJ6E型柴油机具有经济性能好、烟度低等特点.     

12V280ZJ型柴油机起动试验与分析

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。     

16V280ZJ型柴油机连杆断裂失效分析

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。     

16V24OZJ型柴油机机体的修复

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.     

16V280ZJB型高强化机车柴油机机体动应力试验研究

针对16V280ZJB型大功率柴油机机体进行了柴油机在100r/min额定转速负荷特性、空载特性和牵引特性工况下的机体动应力试验.并将试验结果与国内外同类型柴油机的机体应力状态进行分析比较,为16V280ZJB型柴油机机体进一步优化设计提供依据.     

16V280ZJ型柴油机喷油泵齿杆窜油问题原因分析及相关解决对策

从DF8B、DF11、DF11G型机车用16V280ZJ型柴油机喷油泵工作状态入手，分析了16V280ZJ型柴油机喷油泵齿杆窜油问题产生的原因，并提出了解决对策。1024套改进方案经过近2年的实际运用考核表明，达到了设计要求，用户反映良好。     

一种防止柴油机停缸飞车的装置

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。     

12V280ZJ型柴油机相继增压系统的试验研究

通过在一台12V280ZJ型柴油机上进行的相继增压系统的开发和试验研究,初步掌握了相继增压系统的设计技术,确定了合适的运行切换点及增压器切换过程中的时间控制参数,对相继增压系统对柴油机的性能影响有了更进一步的了解。     

汽油机怠速旁通阀进气特性研究

利用软件对发动机怠速工况下旁通阀进气进行仿真分析,结合实验数据验证所建立的模型的精度,在此基础上,利用验证后的模型对点燃式发动机起动工况下的旁通阀进气特性进行了模拟,结合平均值模型对汽油机进气特性的描述,建立了发动机的旁通阀进气模型。     

Simulation of a hydrogen/natural gas engine and modelling of engine operating parameters

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.     

热声热机的热力学分析

回顾了热声现象的研究历史,介绍了热声热机的结构和分类,基于气体微团的热力学循环和能量转换,分析了热与声功的转换原理、转换条件以及热声热机的工作机理,并指出了该研究领域的工业应用前景。     

Development of a high-pressure hydrogen injection for SI engine and results of engine behavior

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.     

发动机缓速制动技术浅论

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.     

Efficiency of a Miller engine

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.     

Optimum Stirling engine geometry

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.     

OPOC发动机研究综述

本文介绍了OPOC（对置活塞对置气缸）发动机的发展历程、研究方向和发展现状,重点探讨了OPOC发动机的结构特点及优势,与传统发动机相比,双对置二冲程发动机具有扫气质量高,轻质高功率,低油耗,低排放及自平衡性好等诸多优点,在动力性得到提升的同时,有效地改善了二冲程发动机的经济性和排放性。