柴油机共轨式燃料喷射系统

介绍了三种柴油机共轨式燃油喷射系统。说明了共轨式燃油喷射系统的优点和开发应用中要解决的几个问题。     

柴油机燃料喷射系统的工作原理与检测

本文分析了柴油机电控燃料供给系统的组成、结构与功能,介绍了喷油泵、喷油器的结构与工作原理,同时讲述了柴油机电控燃料供给系统的检测方法。     

车用柴油机电控燃油喷射系统分析

介绍了国内外开发的几种较为典型的车用柴油机电控燃油喷射系统，并将其分为常规压力电控燃油喷射系统和高压电控燃油喷射系统。较为全面地展示了这一领域的发展现状及今后的发展趋势。     

燃料喷射率对直喷式柴油机燃烧和排放的影响

燃料喷射率分布是降低直喷式柴油机有害物排放的重要因素。文中通过试验研究。阐述引燃喷射和喷射率对直喷式柴油机燃烧与排放的影响。说明抑制初期燃油喷射率和提高后期燃油喷射率是降低ＮＯｘ及烟尘排放的重要途径。     

柴油机电控喷射系统发展现状

从柴油机的发展阐明了燃油喷射系统采用电子控制的必要性,给出了电控喷射系统的组成及分类方法,详细介绍了国外各种控制系统的结构及技术特点,分析了我国柴油机电控喷射系统的发展趋势。     

柴油机共轨喷射系统

一、柴油机在轿车上的应用 尽管柴油机在中国声誉不佳,有不少人和不少地方将柴油机当作环境污染的代名词,但是在西欧国家近年来柴油机被广泛地用于轿车,发展势头非常迅猛。 历来柴油机由于重量大、噪声高和冒黑烟而被排斥在轿车之外。但是柴油机有一个很大的优点,那就是油耗低。与传统的汽油机相比,油耗可降低30％左右。自从70年代石油危机爆     

柴油机燃料喷射系统的工作原理与检测(下)

四、喷油器在每个喷油器上方有一个电控三通阀(TWV阀),如图8所示。三通阀由内阀、外阀和阀体组成。内阀是一个自由活塞,外阀和电磁线圈的铁心做成一体,由线圈通电来使外阀上下运动,阀体则用来支承外阀。这三部分相互配合精度很高,分别形成密封锥座A和B。随着外阀的运动,A、B锥座交替关闭,三个油道两两交替连通。电磁阀不通电时,外阀处在下面位置,B座     

玉柴6M,中国重型发动机的一匹"黑马"

2006年上半年，玉柴6M销量同比翻了一番。伴随着高品位、高品质、低油耗、低噪声的玉柴24气门6M重型发动机快速批量进入市场，玉柴6M又在更高的技术竞争平台上领先国内同行，市场占有率也在急剧扩张，玉柴6M因此被业内人士称为中国重型发动机市场上的一匹“黑马”。     

车用大功率柴油机电控喷油系统的开发研究

以车用 6V1 5 0柴油机原有的机械控制喷油系统为基础 ,开发电控喷油系统 ,实现了对喷油量的电子控制。采用高速开关型数字电磁阀作为电液执行器的电液转换元件 ;采用 MC68HC1 1 E2单片机作为电控单元的核心 ;在喷油泵供油齿杆位置闭环控制的基础上 ,实现柴油机转速闭环控制 ;开发了实验监控系统 ,以满足电控喷油系统与柴油机匹配的需要。进行了电控喷油系统与6V1 5 0柴油机的匹配实验 ,取得了较好的效果     

An electronically controlled fuel injection system for new diesel engines

The new system makes it possible to improve accuracy and provide more flexibility in the control of fuel injection volume and injection timing compared with conventionally-used mechanical control systems.     

Analysis of injection rate characteristics of fuel injection systems in IDI diesel engines using an enhanced numerical simulation code

A fuel injection simulation code was developed with an approximate lumped-parameter network scheme. This code has many improvements for obtaining better computational accuracy. These include a new iteration approach, a nonuniform dividing method of injection pipe, a large number of injection system elements and consideration of kinematic viscosity of the fuel and its flow resistance through the injector during the throttling period. This simulation code was used to evaluate various control systems of injection rate for IDI diesel engines. Based on the results, a comparison was carried out among control characteristics of fuel injection rate of these systems, and clear correlation was shown between operating conditions of the injection pump and injection rates.     

Analysis of the capabilities of a two-stage turbocharging system to fulfil the US2007 anti-pollution directive for heavy duty diesel engines

This article presents a two-stage turbocharged heavy-duty diesel (HDD) engine designed to fulfil the US2007 anti-pollution directive. This directive imposes very restrictive limits on the NOx and particle emissions of HDD engines. In this work, the possibility of combining particle traps in the exhaust line to reduce soot emissions with very high EGR rates to reduce NOx emissions is considered. This new generation engine implements two-stage turbocharging in order to improve the bsfc when the engine is working on steady conditions as well as to optimize the engine transient response. After carrying out the tests, the results were analyzed and the engine settings were adjusted to maximise its behaviour and minimise pollutant emissions. NOx and soot emission peaks were also analyzed at engine transient conditions in order to keep them under certain levels, and thus maintain the overall pollutant emissions to a level that is as low as possible. In summary, a double-stage turbocharging configuration can greatly improve engine driveability (between 23% and 36% depending on engine speed), while reducing NOx emissions during transient evolution without increasing opacity peaks beyond the stated limits.     

重卡MES建设方案

面向陕重汽的现实生产过程,提出适合于该企业现实情况的制造执行系统建设方案,方案中详细描述了重卡行业多级作业计划的编制流程及相应的调整反馈机制,描述了车身制造、车架制造、总装、调试等生产过程的数据采集方式和管理机制,并初步探讨了整车生产过程中涉及到的零部件质量追溯和物流配送管理方式。     

重卡SCM建设方案策划

根据陕汽重卡板块的零部件供应现状,提出符合公司现状的供应链系统总体架构,详细描述了公司采购计划的多种生成模式和计划执行流程,描述了面向供应商的绩效评价流程和评价指标体系,并初步介绍陕汽供应商门户应包含的主要功能。     

更为快捷的燃料电池救火车

用于紧急服务的车辆开始利用燃料电池动力的同时也极大的提高了它们的加速度。[编者按]