1.长春汽车工业高等专科学校 汽车运用学院, 吉林 长春 130013
2.吉林大学 机械与航空航天工程学院, 吉林 长春 130021
3.北华大学 机械工程学院, 吉林 吉林 132013
徐凯(1993— ),男,吉林省吉林市人,硕士研究生,助教;研究方向为机构设计、动力学分析等。
扫 描 看 全 文
徐凯,冯增铭,杨金兴等.可变压缩比发动机多连杆机构设计及动力学分析[J].机械传动,2022,46(12):161-168.
Xu Kai,Feng Zengming,Yang Jinxing,et al.Design and Dynamic Analysis of the Multi-link Mechanism for Variable Compression Ratio Engine[J].Journal of Mechanical Transmission,2022,46(12):161-168.
徐凯,冯增铭,杨金兴等.可变压缩比发动机多连杆机构设计及动力学分析[J].机械传动,2022,46(12):161-168. DOI: 10.16578/j.issn.1004.2539.2022.12.025.
Xu Kai,Feng Zengming,Yang Jinxing,et al.Design and Dynamic Analysis of the Multi-link Mechanism for Variable Compression Ratio Engine[J].Journal of Mechanical Transmission,2022,46(12):161-168. DOI: 10.16578/j.issn.1004.2539.2022.12.025.
发动机压缩比是影响汽油发动机热效率的因素之一,发动机需要根据实际工况匹配最佳压缩比以满足实际要求。因此,可变压缩比技术有助于实现不同工况下发动机动力性和燃油经济性之间的平衡。为此,根据发动机原理,设计了一种可变压缩比发动机多连杆机构,通过运动学建模计算与仿真结果对比分析,验证了机构设计的正确性。基于多体动力学仿真分析,综合考虑燃烧力负载和曲轴转速等边界条件,探究了多连杆机构随控制轴转角的变化规律,对多连杆机构在不同压缩比条件下的运动学及动力学特性进行评价,并与传统单连杆机构进行了详细对比分析。结果表明,多连杆机构可通过实现压缩比实时可变来满足实际工况的需要,在动力放大特性及抑制活塞与缸壁间摩擦等方面存在力学优势,并能在发动机振动方面带来额外的动态效益。
The compression ratio of engines is one of the factors affecting the thermal efficiency of gasoline engines. The engine needs to match the best compression ratio according to the actual conditions to meet the actual requirements. Therefore, variable compression ratio technology can help achieve a balance between engine power and fuel economy under different operating conditions. Thus, a multi-link mechanism for variable compression ratio engine is designed based on the engine principle. The correctness of the mechanism design is verified by kinematics theory modeling calculation and comparative analysis of simulation results. Based on multi-body dynamics theory and considering boundary conditions such as combustion load and crankshaft speed comprehensively, the variation rule of the multi-link mechanism with control shaft rotation angle is explored; the kinematic and dynamic characteristics of the multi-link mechanism under different compression ratio conditions are evaluated, compared and analyzed in detail with those of the traditional single-link mechanism. The results show that the multi-link mechanism can realize real-time variable compression ratio to meet the actual operating conditions, has mechanical advantages in power amplification characteristics and restraining friction between piston and cylinder wall, and brings additional dynamic benefits in engine vibration.
发动机变压缩比多连杆机构机构设计多体动力学
EngineVariable compression ratioMulti-link mechanismMechanism designMulti-body dynamics
PESIC R,MILOJEVIC S.Efficiency and ecological characteristics of a VCR diesel engine[J].International Journal of Automotive Technology,2013,14(5):675-681.
BERGSTEN L.Saab variable compression SVC-variabilität und kontrolle[J].MTZ Motortechnische Zeitschrift,2001,62(6):424-431.
BOROWSKI A,KLEIST A,LANGER U.Hydraulic unit for the cylinder head movement of the SVC petrol engine[J].MTZ Worldwide,2002,63(1):15-16.
DUCHEMIN M,COLLEE V.Profile optimization of the teeth of the double rack-and-pinion gear mechanism in the MCE-5 VCRi engine[J].SAE International Journal of Engines,2016,9(3):1786-1794.
BROOKE L.Targeting 40% BTE with advanced VCR[J].Automotive Engineering,2017:29.
崔彪.发动机可变压缩比技术方案研究[D].南京:南京理工大学,2011:23-36.
CUI Biao.Research on engine variable compression ratio technology[D].Nanjing:Nanjing University of Technology,2011:23-36.
牛钊文,周斌,展靖华,等.可变压缩比技术的研究与展望[J].内燃机,2010(4):44-46.
NIU Zhaowen,ZHOU Bin,ZHAN Jinghua,et al.Research and prospect of variable compression ratio technology[J].Internal Combustion Engines,2010(4):44-46.
WIRBEIEIT F G,BINDER K,GWINNER D.Development of pistons with variable compression height for increasing efficiency and specific power output of combustion engines[C]//International Congress and Expostion,1990,99:543-557.
欧阳林.可变燃烧室活塞的动力学特性研究[D].武汉:武汉理工大学,2012:22-32.
OUYANG Lin.Research on dynamic characteristics of variable combustion chamber piston[D].Wuhan:Wuhan University of Technology,2012:22-32.
WEINOWSKI R,WITTEK K,DIETERICH A,et al.Variable compression ratio for gasoline engines[J].MTZ Worldwide,2012,73(5):32.
WITTEK K,GEIGER F,ANDERT J,et al.Experimental investigation of a variable compression ratio system applied to a gasoline passenger car engine[J].Energy Conversion and Management,2019,183:753-763.
KLEEBERG H,TOMAZIC D,DOHMEN J,et al.Increasing efficiency in gasoline powertrains with a two-stage variable compression ratio(VCR)system[C]//SAE 2013 World Congress and Exhibition,2013:1-10.
王文建,卢建学,陈志伟,等.一种可变压缩比机构:CN208546235U[P].2019-02-26.
WANG Wenjian,LU Jianxue,CHEN Zhiwei,et al.A variable compression ratio mechanism:CN208546235U[P].2019-02-26.
王艺颖.一种可变连杆式VCR发动机结构设计与主要零部件动力学分析[D].重庆:重庆交通大学,2015:31-48.
WANG Yiying.Structural design and dynamic analysis of main components of a variable link VCR engine[D].Chongqing:Chongqing Jiaotong University,2015:31-48.
董健,李格升,潘志翔,等.内燃机改进型可变压缩比活塞:CN202131122U[P].2012-02-01.
DONG Jian,LI Gesheng,PAN Zhixiang,et al.Improved variable compression ratio piston for internal combustion engine:CN202131122U[P].2012-02-01.
刘鑫龙.可变压缩比对直喷汽油机性能改善研究及其机构设计[D].长春:吉林大学,2015:28-42.
LIU Xinlong.Research on performance improvement of direct injection gasoline engine with variable compression ratio and its mechanism design[D].Changchun:Jilin University,2015:28-42.
0
浏览量
7
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构