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本文介绍了位置控制式、时间控制式和共轨 时间控制式柴油机电控燃油喷射系统的工作特点 ,分析了它们的技术特征、技术关键及电控燃油喷射系统的优越性 ,并提出了柴油机电喷系统发展应加强研究的内容。 相似文献
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车用柴油机电控燃油喷射系统的分析 总被引:2,自引:0,他引:2
本文介绍了位置控制式、时间控制式和共轨+时间控制式柴油机电控燃油喷射系统的工作特点,分析了它们的技术特征、技术关键及电控燃油喷射系统的优越性,并提出了柴油机电喷系统发展应加强研究的内容。 相似文献
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车用柴油机电控燃油喷射系统的现状与发展 总被引:7,自引:0,他引:7
电子控制技术是车用柴油机燃油喷射系统发展的必然趋势。本文简述了车用柴油机采用电控燃油喷射系统的必要性及其组成,分析了国内外柴油机电控燃油喷射系统的发展及应用实例。并着重介绍了电控泵喷嘴和高压共轨电控燃油喷射系统。 相似文献
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用户要求汽车更加舒适并具有更高品质,而对排放的要求也日益严格。与现在的控制系统相比较,新系统要求在使用期内具有更大的性能范围,更高的调节精度。而常用的机械式系统愈来愈受到自身性能的限制。因此,Benz公司首次在新一代的四气门C系列柴油机上将发动机的控制由机械式改为电控系统,为未来柴油机的发展迈出了重要的一步。 相似文献
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一种共轨式电控柴油机的燃油喷射系统 总被引:10,自引:0,他引:10
研究开发了一种共轨式柴油机的电喷系统 ,设计了系统的硬件和软件并在油泵试验台上对系统进行了性能试验。由试验可知 :( 1)电控喷油器的响应速度快 ,完成一次喷油的最短时间为 0 .9ms;( 2 )喷油正时及喷油量随工况的变化关系控制灵活 ,调节范围大 ,喷油量的喷油持续角可控范围为 4°~ 50°油泵轴转角 ,喷油正时的可控范围可达± 3 0°油泵轴转角 ;( 3 )系统整体的控制精度高 ,喷油正时及喷油脉宽的理论控制误差均小于 0 .0 9°油泵轴转角 ;( 4)系统的喷射压力可在 0 MPa~ 4 5MPa之间连续调节 ,误差小于 5%。系统的工作性能与技术指标能够满足柴油机对电控喷射系统的要求 相似文献
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车用柴油机电控燃油喷射系统的研究现状和发展趋势 总被引:9,自引:0,他引:9
本文从系统组成、控制理论应用两个方面详细论述了国内外车用柴油机电子控制燃油喷射系统的研究现状及发展趋势。大量研究表明:将先进的控制方法引入到柴油机的运行控制中,不仅可以显著地提高柴油机的经济性、动力性.而且可以改善废气排放、降低污染,满足日益苛刻的排放法规,改善乘坐舒适性,大幅度提高柴油机的商品价值。 相似文献
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柴油机高压共轨燃油喷射—电控系统开发研究 总被引:11,自引:4,他引:7
描述了柴油机高压共轨电控喷油系统的工作原理和实施方案,并展开了对该系统全面的研究。完成了基于现场总线的分布式电控柴油机开发环境设计,高速电磁阀驱动模块的开发和电控单元硬软件系统的整体设计等,为进一步的发动机台架试验作好了充分准备。 相似文献
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柴油机喷油器故障直接影响到燃油的喷射质量,导致燃烧过程恶化,影响柴油机的性能指标。常规的模糊神经网络中,模糊运算往往采用静态的、局部优化运算方法,往往存在技术上的难点,为此提出了一种基于补偿模糊神经网络的智能诊断系统。该系统将神经网络和补偿模糊逻辑相结合,采用动态、全局优化的运算,充分利用了相互间的优点,使网络更适应、更优化,加快训练速度。运用到柴油机燃油喷射系统故障中,取得了较好的效果。 相似文献
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柴油机采用电子控制喷射是一种新技术,它有不同方式,但都是对缸内高压喷射的电子控制,其难点在于高速强力电磁阀的驱动和基于角度的喷射实时控制软件.介绍了电控泵-管-嘴柴油喷射系统中电控单元的研究与开发.采用高频脉宽调制功率驱动电路进行电磁阀驱动,并以电流信号反馈.应用闭环喷射控制软件实现驱动电流的智能控制、喷射始点和喷油期的实时控制. 相似文献
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Jinguang LIANG Xiumin YU Yue GAO Yunkai WANG Hongyang YU Baoli GONG 《Frontiers of Energy and Power Engineering in China》2008,2(4):410-415
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.
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Translated from Chinese Internal Combustion Engine Engineering, 2007, 28(4): 23–27 [译自: 内燃机工程] 相似文献
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LIANG Jinguang YU Xiumin GAO Yue WANG Yunkai YU Hongyang Gong Baoli 《Frontiers in Energy》2008,2(4):410
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. 相似文献
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《International Journal of Hydrogen Energy》2023,48(66):25984-25999
In recent years, there has been a rapid transition from internal combustion engines to hybrid and electric vehicles. It is an inevitable fact that the dominance of internal combustion engines in the market will continue for many years due to the charging and battery problems in these vehicles. Therefore, it is an important issue to improve the performance and emissions of internal combustion engines by making them work with alternative energy sources. In this study, hydrogen-diesel dual fuel mode was used in a dual-fuel compression ignition single cylinder engine with common rail fuel injection system and electronically controlled gas fuel system. The study was carried out at constant speed (1850 rpm), different load (3-4.5-6-7.5-9 Nm) and different hydrogen injector opening amounts (1.6-1.8-2.0 ms). The effects of hydrogen energy ratios obtained with different hydrogen injector opening amount on engine performance and emissions were examined. According to the results, it was determined that the in-cylinder pressure values increased at medium and high loads, and the specific energy consumption decreased. When the emission values were examined, it was determined that there was an increase in NO emissions and a significant decrease in other emissions. However, increasing the hydrogen energy ratio above 14% adversely affected engine performance and emissions. 相似文献