进气预热对柴油机低温起动影响的研究

分析研究几种进气预热装置对柴油机起动性能的影响，得出不同环境温度下选用不同的进气预热装置的结论。     

基于进气预热对柴油机低温起动影响的研究

分析研究几种进气预热装置对柴油机起动性能的影响,得出不同环境温度下选用不同的进气预热装置的结论.     

车用柴油机低温起动性能研究

本文论述了车用柴油机低温起动时存在的问题，并介绍了使用火焰预热塞后改进起动性能的效果以及使用中应注意的问题。     

车用柴油机低温起动性能研究

本文论述了车用柴油机低温起动时存在的问题，并介绍了使用火焰预热塞后改进起动性能的效果以及使用中应注意的问题。     

车用柴油机低温起动措施

柴油机因靠压缩自燃,所以在低温下起动困难．为了保证柴油机起动迅速可靠,必须使气缸中压缩终了的空气温度比柴油机的着火温度高出200℃以上,使喷入的燃油及时着火。目前,车用柴油机采取了多种低温起动措施,为燃料着火创造了有利条件．下面介绍几种低温起动装置．1压力雾化火焰起动装置图1为奔驰OM400系列柴油机用的压力雾化火焰起动装置示意图．其工作原理是,柴油机进气经过一个特制的燃烧室;燃油通过电动输油泵（3）从油箱（1）吸出,经过滤器（2）输送至喷油器而喷入燃烧室．起动电流经点火线圈（4）、点火电缆（8）至火花塞（7…     

进气预热对共轨柴油机低温起动的影响研究

主要就进气预热对柴油机的低温起动的影响进行试验研究,通过理论计算、预热参数设计、试验测试等,满足某系列共轨柴油机-25℃下的低温起动要求。     

SOFIM柴油机火焰进气预热低温启动装置

为解决柴油机的低温启动困难，ＮＡＶＥＣＯ车用ＳＯＦＩＭ柴油采用火焰进行气预热低温启动装置，保证了该发动机在低温状态的可靠启动，本文介绍了该装置的组成，工作过程以及具备的各项功能。     

某柴油机低温起动性能优化设计

柴油机的低温起动性能成为评价柴油机性能的重要指标之一。通过试验,分析影响柴油机低温起动性能的主要原因,通过优化设计喷油油束与预热塞头部的位置,实现更好的低温起动性能。     

满足极寒环境下的柴油机冷起动措施研究

我们主要针对极寒条件下的拖拉机冷起动状况进行研究,使6X柴油机配套某系列拖拉机满足-30℃～-35℃环境下的低温起动要求。研究压缩比、冷却液预热对低温起动性能的影响,通过理论计算、试验对比,验证冷起动措施的起动效果。     

某型号柴油机低温起动性能优化

基于缸内燃烧理论对某型号柴油机低温起动困难问题进行分析,提出提高压缩比、采取不同进气加热方式、优化气门间隙3种措施提升缸内温度,并对改进后柴油机开展低温起动性能对比试验.结果 表明:采用高压缩比可明显提升缸内压缩温度,利于改善低温起动性能;分缸加热可明显提升进气温度,相同加热时间下,分缸加热比格栅加热进气温度提升约53...     

机车柴油机起动辅助储能装置

介绍了电起动、气起动和混合起动三种机车柴油机起动方式,分析了电起动所用三种不同类型蓄电池的优缺点.着重论述了机车用铅酸蓄电池在使用中存在的经济浪费和起动不可靠等问题和采用起动辅助储能装置的意义.以理论分析和试验数据、曲线为依据,说明了起动辅助储能装置可提高起动电流最大值和蓄电池起动最低端压值,从而大大提高起动功率最大值,大大提高起动可靠性;还说明了可延长蓄电池寿命,具有很大的经济价值.     

柴油机起动电路的故障分析与改进措施

1故障现象 GK1E31型工矿内燃液力传动机车开始投入运用以来,出现一起较特殊的柴油机起动失败现象,经检查发现微机#1输出板负责电磁联锁电磁铁DLS(TML1-110V)分断的继电器1J(H100F12-20C)触点严重烧损.     

东风4型内燃机车柴油机起动故障分析判断与处理

介绍了柴油机的起动条件;对东风4型机车柴油机的电气故障、机械故障及燃油供给故障进行了分析;给出了各种起机故障的判断与处理方法.     

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。     

Effects of biodiesel on a low heat loss diesel engine

In this study, the cylinder head, exhaust, and inlet valves of a diesel engine were coated with the ceramic material MgO–ZrO₂ by the plasma spray method, while the piston surface was coated with ZrO₂. Thus, a thermal barrier was provided for the elements of the combustion chamber with these coatings. Using identical coated and uncoated engines, the effects of canola methyl ester produced by the transesterification method, and ASTM No. 2D fuel on engine performance and exhaust emissions were studied. Tests were performed on the uncoated engine, and then repeated on the coated engine and the results were compared. An increase in engine power and decrease in specific fuel consumption, as well as significant improvements in exhaust gas emissions and smoke density, were observed for all test fuels used in the coated engine compared with that of the uncoated engine.     

Optimization of fuel supply map during starting process of electronic controlled diesel engine

Tests were conducted to study influence of fuel supply map during the starting process of an electronic controlled diesel engine using an electronic controlled diesel engine which was made up of a CA498Z diesel engine, a VP37 electronic controlled distributor injection pump management system and a VS100 calibration system. The calibration process of starting fuel supply map was educed under the principle of low HC emission and rapid starting velocity. The calibration methods of starting fuel supply map were obtained.     

Optimization of fuel supply map during starting process of electronic controlled diesel engine

Tests were conducted to study influence of fuel supply map during the starting process of an electronic controlleddiesel engineusinganelectronic controlleddiesel engine which was made up of a CA498Z diesel engine, a VP37 electronic controlled distributor injection pump management system and a VS100 calibration system. The calibration process of starting fuel supplymapwas educed under the principle of low HC emission and rapid starting velocity. The calibration methods of starting fuel supply map were obtained. __________ Translated from Chinese Internal Combustion Engine Engineering, 2007, 28(4): 23–27 [译自: 内燃机工程]     

内燃机车增压器低温喘振现象的研究

针对增压器低温喘振现象,分析了产生原因,阐述了解决这一现象的合理措施,即在蜗壳出口处安装智能调节放气阀门,依照一定的放气规律,将部分压缩空气放入大气,并通过试验证明了这一措施的可行性。     

Investigations of an air starting motor of marine medium-speed diesel engine with numerical analyses

The marine medium-speed diesel engines are started by two methods; one is the electric motors, and the other air starting motors. Even though air starting motor is dependent of the engine types and sizes, it has been widely used in this area due to its simplicity, convenience and reliability. The purpose of this paper is to give the designing parameters in order to make a proper ＂Air Starting Motor＂ using CFD. The aerodynamic approaches were given to understand the internal flow characteristics of the air starting motor. In addition, we have carried out the inves- tigation of effects of tip clearance. In the calculations the tip clearance of air starting motor has been varied between 0, 2.8, 4.3 and 5.7% of blade span. The results of computation are the tip clearance increased to 2.8%, the torque decreased 24%, and there was no more large changes when the clearances increased to 4.3% and 5.7%.