螺旋气门的结构优化及对无节气门汽油机燃烧性能的影响

doi:10.19562/j.chinasae.qcgc.2021.01.004

汽车工程 ›› 2021, Vol. 43 ›› Issue (1): 27-33.doi: 10.19562/j.chinasae.qcgc.2021.01.004

螺旋气门的结构优化及对无节气门汽油机燃烧性能的影响

韩康^1,²,常英杰^1,²,谢宗法^1,²(),房佩鸽^1,²,张晋群^1,²,张坤^1,²

^1.山东大学机械工程学院，济南 250061
^2.山东大学，高效洁净机械制造教育部重点试验室，济南 250061

收稿日期:2020-04-15 修回日期:2020-07-11 出版日期:2021-01-25 发布日期:2021-02-03
通讯作者: 谢宗法 E-mail:zongfax@sdu.edu.cn
基金资助:
山东省重点研发计划项目(2019JZZY010914);国家重点研发计划项目(SQ2020YFF0416411)

Structure Optimization of Helical Valve and Its Influence on Combustion Performance of an Unthrottled SI Engine

Kang Han^1,²,Yingjie Chang^1,²,Zongfa Xie^1,²(),Peige Fang^1,²,Jinqun Zhang Kun Zhang^1,²

^1.School of Mechanical Engineering，Shandong University，Jinan 250061
^2.Shandong University，Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education，Jinan 250061

Received:2020-04-15 Revised:2020-07-11 Online:2021-01-25 Published:2021-02-03
Contact: Zongfa Xie E-mail:zongfax@sdu.edu.cn

摘要/Abstract

摘要：

由于进气方式的改变，气道喷射式无节气门汽油机中小负荷时泵气损失显著降低，但燃烧性能却明显恶化。为改善其燃烧性能，本文中设计了一种在进气过程中能产生较强进气涡流的螺旋气门，并使用仿真软件STAR-CCM+对螺旋气门的主要结构参数进行了优化。在稳流气道试验台上测量其进气涡流比和流量系数，证明该螺旋气门在开启升程较小时能产生强烈的进气涡流，对改善无节气门汽油机在中小负荷时的缸内进气流动状态和油气混合十分有利。将该螺旋气门安装在一台装载有全可变液压气门机构的无节气门汽油机上，试验结果表明：螺旋气门产生的进气涡流显著提高了无节气门汽油机中小负荷工况下燃烧速率、降低了循环波动，使燃油经济性能得到明显改善。

关键词: 无节气门汽油机, 螺旋气门, 涡流比, 仿真计算, 燃烧性能

Abstract:

Due to the change of air intake mode， the pumping loss of port injection （PI） unthrottled SI engine at medium and low loads is significantly reduced but its combustion performance is obviously deteriorated. In order to improve the combustion performance， a helical valve which can generate strong swirl in the intake process is designed， and the main structural parameters of the helical valve are optimized with the simulation software STAR-CCM+. The intake swirl ratio and the flow coefficient are measured on the steady flow test bench， which proves that the helical valve can generate strong intake swirl at small lift and improve the air intake flow state and fuel air mixing in the cylinder of the unthrottled SI engine. The helical valves are installed in an unthrottled SI engine with fully variable hydraulic valve system. The test results show that the intake swirl generated by the helical valve significantly improves the combustion rate of the unthrottled SI engine under low and medium load conditions and reduces cycle fluctuations， so that the fuel economy performance has been significantly improved.

Key words: unthrottled SI engine, helical valve, swirl ratio, simulation calculation, combustion performance

韩康,常英杰,谢宗法,房佩鸽,张晋群,张坤. 螺旋气门的结构优化及对无节气门汽油机燃烧性能的影响[J]. 汽车工程, 2021, 43(1): 27-33.

Kang Han,Yingjie Chang,Zongfa Xie,Peige Fang,Jinqun Zhang Kun Zhang. Structure Optimization of Helical Valve and Its Influence on Combustion Performance of an Unthrottled SI Engine[J]. Automotive Engineering, 2021, 43(1): 27-33.

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参考文献 14

1	XU J，CHANG S，FAN X，et al. Effects of electromagnetic intake valve train on gasoline engine intake charging ［J］. Applied Thermal Engineering，2016，96：708-715.
2	LI T， GAO Y， WANG J S， et al. The Miller cycle effects on improvement of fuel economy in a highly boosted， high compression ratio， direct-injection gasoline engine： EIVC vs. LIVC ［J］. Energy Conversion and Management， 2014， 79： 59-65.
3	冯浩，秦博，林思聪，等. 电子增压器对增压米勒循环汽油机性能影响的试验研究［J］. 汽车工程， 2019， 41（7）： 738-743.
	FENG H， QIN B， LIN S C， et al. An experimental study on the effect of electric supercharger on the performance of a turbocharged miller cycle gasoline engine ［J］. Automotive Engineering， 2019， 41（7）： 738-743.
4	KNOP V， MATTIOLI L. An analysis of limits for part load efficiency improvement with VVA devices ［J］. Energy Conversion and Management， 2015， 105： 1006-1016.
5	COSTANZO V S， HEYWOOD J B. Mixture preparation mechan-isms in a port fuel injected engine［C］. SAE Paper 2005-01-2080.
6	冯仁华，付建勤，杨靖，等. Atkinson循环发动机性能改进研究［J］. 汽车工程， 2017， 39（5）： 509-516.
	FENG R H， FU J Q， YANG J， et al. A study on the performance improvement of atkinson cycle engine［J］. Automotive Enginee-ring， 2017， 39（5）： 509-516.
7	PORPATHAM E， RAMESH A， NAGALINGAM B. Effect of swirl on the performance and combustion of a biogas fuelled spark ignition engine ［J］. Energy Conversion and Management， 2013， 76： 463-471.
8	MILLO F， LUISI S， BOREAN F， et al. Numerical and experimental investigation on combustion characteristics of a spark ignition engine with an early intake valve closing load control ［J］. Fuel， 2014， 121： 298-310.
9	BATTISTONI M， MARIANI F. Fluid dynamic study of unthrottled part load SI engine operations with asymmetric valve lifts［C］. SAE Paper 2009-24-0017.
10	LUTTERMANN C， SCHÜNEMANN E， KLAUER N. Enhanced VALVETRONIC technology for meeting SULEV emission requirements ［C］. SAE Paper 2006-01-0849.
11	李涛，常英杰，谢宗法，等. 无节气门汽油机燃烧循环变动特性试验［J］. 内燃机学报， 2018， 36（1）： 44-50.
	LI T， CHANG Y J， XIE Z F， et al. Experiment of combustion cyclic variations in unthrottled SI engine ［J］. Transactions of CSICE， 2018， 36（1）： 44-50.
12	SUN T T， CHANG Y J， XIE Z F， et al. Experimental research on pumping losses and combustion performance in an unthrottled spark ignition engine ［J］. Proceedings of the Institution of Mechanical Engineers， 2018， 232（7）： 888-897.
13	周龙保. 内燃机学［M］. 3版. 北京：机械工业出版社， 2010： 114.
	ZHOU L B. Internal combustion engine theory ［M］. 3rd ed. Beijing： China Machine Press， 2010： 114.
14	何学良. 内燃机燃烧学［M］. 1版. 北京：机械工业出版社， 1990： 219.
	HE X L. Combustion theory of internal combustion engine ［M］. 1st ed. Beijing： China Machine Press， 1990： 219.

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螺旋气门的结构优化及对无节气门汽油机燃烧性能的影响

Structure Optimization of Helical Valve and Its Influence on Combustion Performance of an Unthrottled SI Engine

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