柴油机高压共轨系统仿真研究
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摘要
随着能源和环境问题日益突出,柴油机电控技术逐渐得到发展。高压共轨喷射系统就是柴油机电控技术的应用。高压共轨喷射系统主要有以下特点:喷射压力高,喷射压力高可以增加柴油雾化改善燃烧过程,使得排放污染物减少。由于共轨管压力的产生过程与喷油器喷油过程分离,油压产生与发动机转速与柴油喷射量无关,高压柴油储存在共轨中喷射,各缸喷油器是否喷射,由电脑控制喷油器电磁阀作用而决定,喷油速率的柔性控制,实时调节喷油时刻、控制喷油量、喷油率形成等方面,以形成理想的喷射规律。
本文通过对BOSCH公司CR高压共轨系统各部分结构的分析,对高压共轨系统进行了仿真。高压燃油喷射系统仿真主要过程:首先熟悉系统各部件的连接关系和工作原理,进行数学建模和物理建模,然后用Matlab/simulink仿真计算软件进行仿真,对得出的结论进行分析。仿真过程中进行了一些假设,如不考虑喷油器的变形,各腔定为集中容积,流动为一维非定常层流流动等。简化了系统的组成,不考虑高压油泵到油箱的部件,只考虑喷油泵、共轨管、喷油器等主要部件。计算时考虑了喷油泵的边界问题,共轨管的边界问题,喷油器的边界问题。其中,喷油器的液压部分又可以分盛油槽、控制腔、压力室和针阀腔四个部分,分别计算四个腔体的液体连续方程,然后根据它们的流动情况,应用牛顿第二定律,分析受力,从而得到其受力方程和运动方程。再设定有关参数,如喷油脉宽、柱塞直径、活塞直径等参数,进行仿真,对仿真结果还要进行分析,得出结构参数对喷油规律的影响。从而确定结构参数的数值。如果不符合喷油规律要求,还要对参数进行修正。本文主要对喷油器结构参数对喷油量的影响,共轨管容积对压力波动值的影响等主要参数进行仿真,并得出结论,为共轨柴油机的设计和制造提供依据。
With the energy and environmental issues become increasingly prominent, electronically controlled diesel engine technology to develop gradually. High-pressure common-rail injection system is electronically controlled diesel engine technology. The main high-pressure common-rail injection system has the following characteristics: high injection pressure, injection pressure of high diesel fuel atomization can be increased to improve the combustion process, the reduction of emissions of pollutants. As a result of the emergence of common-rail pressure injector fuel injection process and the process of separation, oil pressure and engine speed have a diesel injection volume has nothing to do with the high-pressure common-rail diesel is stored in the spray of the jet-cylinder injector whether by computer-controlled spray Oil solenoid valve to determine the role, the flexible control of injection rate, real-time fuel injection time adjustment to control fuel injection quantity, fuel injection rate of the formation, in order to form the law of the ideal jet.
Based on the BOSCH company CR high pressure common rail system, the structural analysis of high-pressure common-rail system simulation. Simulation of high-pressure fuel injection system the main process: First of all, familiar with the system to connect the relationship between the components and working principle of mathematical modeling and physical modeling, and then use the Matlab / simulink simulation software simulation, the conclusions of the analysis. Simulation process a number of assumptions, such as the injector not consider the deformation, the cavity volume as a focus on mobile for the one-dimensional unsteady laminar flow and so on. Simplified the system does not consider the high-pressure fuel pump to fuel tank components, only the injection pump, common rail pipe, and other major components of fuel injector. Calculated to take into account the fuel pump of the border issue, the issue of common-rail border control, border issues injector. Among them, the injector part of the hydraulic oil can be sub-Sheng, control cavity, the pressure chamber and valve chamber in four parts, namely the calculation of the liquid cavity four continuity equation, and then according to their mobility, the application of Newton's second law analysis of power, resulting in the force equation and its equation of motion. Re-setting the relevant parameters, such as fuel injection pulse width, plunger diameter, piston diameter, such as parameters, simulation, and analysis of simulation results also come to the structure of fuel injection parameters on the impact of the law. To determine the structure of the numerical parameters. If you do not meet the requirements of fuel injection law, but also on the parameters of the amendment. In this paper, the structure of the injector fuel injection parameters on the impact of volume, volume of common rail pressure control the impact of fluctuations in the value of the main parameters such as simulation, and concluded that, for common-rail diesel engine provide the basis for the design and manufacture.
本文通过对BOSCH公司CR高压共轨系统各部分结构的分析,对高压共轨系统进行了仿真。高压燃油喷射系统仿真主要过程:首先熟悉系统各部件的连接关系和工作原理,进行数学建模和物理建模,然后用Matlab/simulink仿真计算软件进行仿真,对得出的结论进行分析。仿真过程中进行了一些假设,如不考虑喷油器的变形,各腔定为集中容积,流动为一维非定常层流流动等。简化了系统的组成,不考虑高压油泵到油箱的部件,只考虑喷油泵、共轨管、喷油器等主要部件。计算时考虑了喷油泵的边界问题,共轨管的边界问题,喷油器的边界问题。其中,喷油器的液压部分又可以分盛油槽、控制腔、压力室和针阀腔四个部分,分别计算四个腔体的液体连续方程,然后根据它们的流动情况,应用牛顿第二定律,分析受力,从而得到其受力方程和运动方程。再设定有关参数,如喷油脉宽、柱塞直径、活塞直径等参数,进行仿真,对仿真结果还要进行分析,得出结构参数对喷油规律的影响。从而确定结构参数的数值。如果不符合喷油规律要求,还要对参数进行修正。本文主要对喷油器结构参数对喷油量的影响,共轨管容积对压力波动值的影响等主要参数进行仿真,并得出结论,为共轨柴油机的设计和制造提供依据。
With the energy and environmental issues become increasingly prominent, electronically controlled diesel engine technology to develop gradually. High-pressure common-rail injection system is electronically controlled diesel engine technology. The main high-pressure common-rail injection system has the following characteristics: high injection pressure, injection pressure of high diesel fuel atomization can be increased to improve the combustion process, the reduction of emissions of pollutants. As a result of the emergence of common-rail pressure injector fuel injection process and the process of separation, oil pressure and engine speed have a diesel injection volume has nothing to do with the high-pressure common-rail diesel is stored in the spray of the jet-cylinder injector whether by computer-controlled spray Oil solenoid valve to determine the role, the flexible control of injection rate, real-time fuel injection time adjustment to control fuel injection quantity, fuel injection rate of the formation, in order to form the law of the ideal jet.
Based on the BOSCH company CR high pressure common rail system, the structural analysis of high-pressure common-rail system simulation. Simulation of high-pressure fuel injection system the main process: First of all, familiar with the system to connect the relationship between the components and working principle of mathematical modeling and physical modeling, and then use the Matlab / simulink simulation software simulation, the conclusions of the analysis. Simulation process a number of assumptions, such as the injector not consider the deformation, the cavity volume as a focus on mobile for the one-dimensional unsteady laminar flow and so on. Simplified the system does not consider the high-pressure fuel pump to fuel tank components, only the injection pump, common rail pipe, and other major components of fuel injector. Calculated to take into account the fuel pump of the border issue, the issue of common-rail border control, border issues injector. Among them, the injector part of the hydraulic oil can be sub-Sheng, control cavity, the pressure chamber and valve chamber in four parts, namely the calculation of the liquid cavity four continuity equation, and then according to their mobility, the application of Newton's second law analysis of power, resulting in the force equation and its equation of motion. Re-setting the relevant parameters, such as fuel injection pulse width, plunger diameter, piston diameter, such as parameters, simulation, and analysis of simulation results also come to the structure of fuel injection parameters on the impact of the law. To determine the structure of the numerical parameters. If you do not meet the requirements of fuel injection law, but also on the parameters of the amendment. In this paper, the structure of the injector fuel injection parameters on the impact of volume, volume of common rail pressure control the impact of fluctuations in the value of the main parameters such as simulation, and concluded that, for common-rail diesel engine provide the basis for the design and manufacture.
引文
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[12] Alois kainz.a new user interface concept for electronic injection and control of diesel engines.SAE 870430
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[44]高山.当前汽车新技术集锦.汽车之友.2003
[45] Keichi Yamada and Hidekazu Oshizawa. The Second Generstion of Electronic Diesel Fuel Injection System Investigation with Rotary Pump ,SAE860145
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[64]王望予.汽车设计.机械工业出版社.2004
[2] Bian Yaozhang"Decrease Emissions by Adaptive Air-Fuel Radio Control"SAE 910391
[3] A kihiko watananbe,satoshi tanaka.a single-ship rise microcontroller boarding on my1998.SAE970863,1996
[4] Gao Zongying ,Supring . Fuel Injection System to Meet Future Reqirements for Diesel Engine. Pohang: ICAE,2003.
[5] .Jeffrey Hood et al,"Emissions from Light Duty Vehicle Operating on Oxygenated Fuels at Low Ambient Temperature:A Preview of Published Sendings",SAE Paper 952403,1995
[6]蔡兴旺编著.汽车构造与原理.机械工业出版社,2004
[7]周龙保.内燃机学.机械工业出版社,1996
[8]周允.汽车百科全书,机械工业出版社2000
[9]崔心存等.现代汽车新技术.人民交通出版社,2001
[10]韩申.发动机原理.人民交通出版社,1988
[11].Shundoh et al,"The Effect of Injection Parameters and Swirl on Diesel Combustion with High Pressure Fuel Injection"SAE Paper 910489,1991
[12] Alois kainz.a new user interface concept for electronic injection and control of diesel engines.SAE 870430
[13] D.j.Dobner. A Mathematical Model for D Development of Dynamic Engine Control. SAE810054.
[14]初纶孔.柴油机供油与雾化.大连理工大学出版社,1989
[15]严兆大.内燃机测试技术.浙江大学1993
[16]于在和等.柴油机燃油喷射系统磁电执行器的控制,吉林大学学报,1998(1)
[17]高书堂,高国强编著.柴油机燃油系统和匹配.北京理工大学出版.
[18]王尚青,杨青.柴油机电子控制技术.机械工业出版社.2005
[19] Testure kato,takesha koyana etc.common rail fuel injection system for improvement of engine performance on heavy duty diesel engine.SAE 980806,1998
[20] Raj Kumar,Graham T.Reader and Ming Zheng.A preliminary study of ignition consistency and heat release analysis for a common-rail diesel engine.SAE Paper.
[21] Shundoh et al,"The Effect of Injection Parameters and Swirl on Diesel Combustion with High Pressure Fuel Injection"SAE Paper 910489,1991
[22]张晓清.柴油机共轨式电控喷射系统的进展.国外内燃机,2000
[23]中国汽车工业史.中国汽车工业史编审委员会.1996
[24]余志生.汽车工程手册.机械工业出版社.2000
[25]余志生.汽车理论.机械工业出版社.1996
[26]边越章等.汽车新能源技术.人民交通出版社1998
[27]陈小复.美国汽车技术的研究领域,上海汽车2003(2).
[28]冯健章主编.汽车发动机原理与汽车理论.机械工业出版社,2003
[29]栾琪文.汽车电控柴油机结构原理与维修.机械工业出版社
[30] Alois kainz.a new user interface concept for electronic injection and control of diesel engines.SAE 870430
[31]霍而贝克.汽车燃油和排放控制系统结构、诊断与维修.机械工业出版社2006
[32]刘少彦.基于simulink的高压共轨柴油机喷油系统仿真研究与计算,华中科技大学硕士学位论文.2003
[33]高献坤.柴油机.高压共轨系统模拟计算与仿真.河南农业大学大学硕士学位论文,2005
[34]黄官升.高压共轨电控喷油系统的研究与开发.北京理工大学博士学位论文,2000.
[35]李永堂编.液压系统建模与仿真.冶金工业出版社2003
[36]王素英.直喷式柴油机燃烧室的发展和应用.柴油机,2001(1)
[37]黄靖雄等.电控柴油机结构原理与维修.人民交通出版社.2008.
[38]徐建新.共轨燃油系统高压泵若干关键问题研究,华中科技大学硕士学位论文,2004.
[39]郭海涛.高压共轨喷油系统喷油规律与控制策略的研究.上海交通大学博士学位论文,2001.16-18,123-124页.
[40]孙文质.液压控制系统.国防工业出版社.1989
[41]卢长耿.李金良.液压控制系统的分析与设计.煤炭工业出版社.1998
[42]骆涵秀.机电控制.浙江大学出版社.2003
[43]申荣卫主编.汽车电子技术.机械工业出版社.1997
[44]马志勇主编.汽车对其维修技师培训教材.人民交通出版社.2003
[44]高山.当前汽车新技术集锦.汽车之友.2003
[45] Keichi Yamada and Hidekazu Oshizawa. The Second Generstion of Electronic Diesel Fuel Injection System Investigation with Rotary Pump ,SAE860145
[46]傅阳春主编.汽车构造图集.人民交通出版社2003
[47]张西振主编.汽车发动机.辽宁科学技术出版社.2002
[48]齐志鹏主编.汽车传感器和执行器的原理与维修.人民邮电出版社.2002
[49]寇国爱.汽车电器与电子控制系统.人民交通出版社,1999
[50]胡春旺主编.汽车电子设备原理与维修.机械工业出版社.2002
[51]刘铮主编.汽车发动机原理教程.清华大学出版社.2001
[51]刘钟国.现代汽车检测与诊断.机械工业出版社,2001
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