风冷汽油机热载荷分析及喇叭型导流罩的影响研究

张俊红; 王西博; 林杰威; 张立鹏; 郑越洋; 阎岩; 戴胡伟

doi:10.7652/xjtuxb202304001

您当前的位置：

首页 >

文章列表页 >

风冷汽油机热载荷分析及喇叭型导流罩的影响研究

专题新型燃料与燃烧过程优化 | 更新时间：2025-07-09

- 风冷汽油机热载荷分析及喇叭型导流罩的影响研究
- Analysis of Thermal Load of Air-Cooled Gasoline Engine and Effect of Engine Flared Fairing
- 西安交通大学学报 2023年57卷第4期页码：1-10
- 作者机构：
  
  1. 天津大学内燃机燃烧学国家重点实验室,天津,300354
  2. 天津内燃机研究所,天津,300072
- 作者简介：
  
  : 2022-08-01。作者简介: 张俊红(1962—),女,教授,博士生导师
  戴胡伟(通信作者),男,博士,助理研究员。基金项目: 国家自然科学基金资助项目(51875397)
- 基金信息：
  
  : 2022-08-01。作者简介: 张俊红(1962—),女,教授,博士生导师;戴胡伟(通信作者),男,博士,助理研究员。基金项目: 国家自然科学基金资助项目(51875397);中国博士后科学基金资助项目(2021M702430)。
- DOI：10.7652/xjtuxb202304001
  中图分类号： TK421.4
- 网络首发：2023-04-10，
  
  纸质出版：2023
- 稿件说明：
移动端阅览
张俊红, 王西博, 林杰威, 等. 风冷汽油机热载荷分析及喇叭型导流罩的影响研究[J]. 西安交通大学学报, 2023,57(4):1-10.

ZHANG Junhong, WANG Xibo, LIN Jiewei, et al. Analysis of Thermal Load of Air-Cooled Gasoline Engine and Effect of Engine Flared Fairing[J]. 2023, 57(4): 1-10.
张俊红, 王西博, 林杰威, 等. 风冷汽油机热载荷分析及喇叭型导流罩的影响研究[J]. 西安交通大学学报, 2023,57(4):1-10. DOI： 10.7652/xjtuxb202304001.

ZHANG Junhong, WANG Xibo, LIN Jiewei, et al. Analysis of Thermal Load of Air-Cooled Gasoline Engine and Effect of Engine Flared Fairing[J]. 2023, 57(4): 1-10. DOI： 10.7652/xjtuxb202304001.

摘要

为了深入分析热载荷对风冷发动机运行稳定性的影响

通过CONVERGE仿真软件对某四冲程风冷式汽油发动机缸内燃烧过程进行数值模拟计算

获得了完整的缸内燃气侧热边界条件。基于FLUENT仿真软件

建立发动机热流固耦合稳态传热仿真模型

获得了燃气侧不均匀热载荷与机体外复杂空气流动共同作用下的发动机热载荷分布

并通过台架实验验证了稳态传热仿真的准确性。设计喇叭型结构导流罩

分析了导流罩收缩比对导流罩性能的影响

改善发动机的冷却效果。结果表明:发动机稳态传热仿真与台架测试最大误差为3.12%

仿真模型具有较高的准确性; 发动机机体最高温度为655 K

出现在排气道端口处位置; 随着导流罩收缩比的减小

发动机冷却散热性能增强

收缩比λ为1.94时

冷却强化效果最好

机体最高温度降低8.8 K。研究对风冷汽油机的冷却系统设计及优化具有一定的指导意义。

Abstract

To further analyze the influence of thermal load on the operational stability of air-cooled engine

a numerical simulation of the gas-side thermal load distribution characteristics of a four-stroke air-cooled gasoline engine were conducted using CONVERGE simulation software. The steady-state heat transfer fluid-solid interaction numerical model of the engine was modeled using FLUENT to obtain the thermal distribution under the combined effect of uneven spatial distribution of gas-side thermal load and complex air flow on the outside of the engine

of which the accuracy of the numerical model was verified by bench tests. A flared fairing is proposed

and the effect of deflector shrinkage ratio(λ)on the engine thermal load was analyzed to improve engine cooling effect. The results showed that the maximum difference of the numerical model results and experimental results was 3.12%

which proved the simulation model had high accuracy. The maximum temperature of the engine was 655 K at the exhaust side

and the cooling performance of the engine was enhanced by decreasing the shrinkage ratio of the fairing. The cooling enhancement was the best when at λ=1.94

and the maximum temperature was reduced by 8.8 K. The study has guiding significance for the design and optimization of cooling systems for air-cooled gasoline engines.

关键词

Keywords

references

姬慧勇. 内燃机结构与原理 [M]. 北京: 国防工业出版社, 2012.

黎苏, 李明海. 内燃机原理 [M]. 北京: 中国水利水电出版社, 2010.

高秀华, 郭建华. 内燃机 [M]. 北京: 化学工业出版社, 2006.

CHOI K W, KIM K B, LEE K H. Investigation of emission characteristics affected by new cooling system in a diesel engine [J]. Journal of Mechanical Science and Technology, 2009, 23(7): 1866-1870.

MOREL T, KERIBAR R. A model for predicting spatially and time resolved convective heat transfer in bowl-in-piston combustion chambers [C]//SAE International Congress and Exposition. Warrendale, PA, USA: SAE International, 1985: 850204.

刘志恩. 内燃机燃烧室多体耦合系统三维瞬态传热模拟及应用研究 [D]. 武汉: 华中科技大学, 2007.

白敏丽, 丁铁新, 吕继组. 活塞组-气缸套耦合传热模拟 [J]. 内燃机学报, 2005, 23(2): 168-175.

BAI Minli, DING Tiexin, LV Jizu. Simulation study on coupled heat transfer for piston set-cylinder liner [J]. Transactions of CSICE, 2005, 23(2): 168-175.

白敏丽, 沈胜强, 陈家骅, 等. 燃烧室部件耦合系统过渡工况传热全仿真模拟研究 [J]. 内燃机学报, 2001, 19(3): 224-229.

BAI Minli, SHEN Shengqiang, CHEN Jiahua, et al. Heat transfer simulation of combustion chamber components coupled system under transient condition [J]. Transactions of CSICE, 2001, 19(3): 224-229.

DU B C, TANG G Z, ZHANG L, et al. Research on air diversion channel of air-cooled gasoline engine cylinder head and simulation of fluid-solid coupling heat transfer [J]. Journal of Mechanical Science and Technology, 2017, 31(11): 5515-5525.

NAIN A, NENE D, UNNITHAN S. Cooling system optimization in an air-cooled CNG engine using 3-D CFD technique [C]//WCX SAE World Congress Experience. Warrendale, PA, USA: SAE International, 2022: 0206.

LI Z, ZHI T G, TAO D. Coupled heat transfer between air-cooling and cylinder head engine [J]. Electrotehnica, Electronica, Automatica, 2018, 66(1): 147-155.

陈飞虎. 风冷式汽油机缸盖流固耦合传热分析及优化 [D]. 重庆: 重庆大学, 2012.

GOKHALE A, KARTHIKEYAN N. Optimization of engine cooling through conjugate heat transfer simulation and analysis of fins [C]//2012 Small Engine Technology Conference Exhibition. Warrendale, PA, USA: SAE International, 2012: 0054.

RUPESH P L, RAJA K, SAI DEEPAK RAJ N V, et al. Computational investigation of heat transfer on the surface of engine cylinder with fins of different shapes and materials [J]. Materials Today, 2021, 46: 3320-3326.

唐梓杰, 丁水汀, 杜发荣. 小型航空二冲程风冷发动机缸体流固耦合传热的仿真 [J]. 航空动力学报, 2011, 26(1): 42-47.

TANG Zijie, DING Shuiting, DU Farong. Simulation of fluid-solid coupled heat transfer of cylinder of a small two-stroke air-cooled aero-engine [J]. Journal of Aerospace Power, 2011, 26(1): 42-47.

SEO J, LEE J S, CHOI K H, et al. Numerical investigation of the combustion characteristics and wall impingement with dependence on split-injection strategies from a gasoline direct-injection spark ignition engine [J]. Proceedings of the Institution of Mechanical Engineers: Part D Journal of Automobile Engineering, 2013, 227(11): 1518-1535.

LIU Yong, REITZ R D. Modeling of heat conduction within chamber walls for multidimensional internal combustion engine simulations [J]. International Journal of Heat and Mass Transfer, 1998, 41(6/7): 859-869.

RAKOPOULOS C D, KOSMADAKIS G M, PARIOTIS E G. Critical evaluation of current heat transfer models used in CFD in-cylinder engine simulations and establishment of a comprehensive wall-function formulation [J]. Applied Energy, 2010, 87(5): 1612-1630.

何联格, 左正兴, 向建华. 气缸盖冷却水腔内两相流动沸腾传热仿真研究 [J]. 西安交通大学学报, 2013, 47(1): 21-26.

HE Liange, ZUO Zhengxing, XIANG Jianhua. Simulation of two-phase flow boiling heat transfer in cylinder head cooling water jacket [J]. Journal of Xi'an Jiaotong University, 2013, 47(1): 21-26.

刘亦夫, 刘兵, 刘亮, 等. 天然气缸内直喷发动机在不同喷射和点火时刻下的排放与燃烧特性 [J]. 西安交通大学学报, 2011, 45(5): 12-16.

LIU Yifu, LIU Bing, LIU Liang, et al. Particulate emission and combustion characteristics of a direct-injection natural gas engine under various injection and ignition timings [J]. Journal of Xi'an Jiaotong University, 2011, 45(5): 12-16.

牟江峰, 刘德新, 舒歌群. 缸内直喷汽油机复合燃烧技术 [J]. 西安交通大学学报, 2010, 44(7): 14-18, 99.

MOU Jiangfeng, LIU Dexin, SHU Gequn. A compound combustion technology for gasoline direct injection engine [J]. Journal of Xi'an Jiaotong University, 2010, 44(7): 14-18, 99.

BERNI F, CICALESE G, FONTANESI S. A modified thermal wall function for the estimation of gas-to-wall heat fluxes in CFD in-cylinder simulations of high performance spark-ignition engines [J]. Applied Thermal Engineering, 2017, 115: 1045-1062.

NUUTINEN M A, KAARIO O T, VUORINEN V A, et al. Imbalance wall functions with density and material property variation effects applied to engine heat transfer computational fluid dynamics simulations [J]. International Journal of Engine Research, 2014, 15(3): 307-324.

WU Minyue, PEI Yiqiang, QIN Jing, et al. Study on methods of coupling numerical simulation of conjugate heat transfer and in-cylinder combustion process in GDI engine [C]//WCXTM 17: SAE World Congress Experience. Warrendale, PA, USA: SAE International, 2017: 2017-01-0576.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

燃气透平叶片尾缘开缝结构冷却性能的数值研究

超临界水异常区域热力学特性研究

冷库水平空气幕热湿阻隔性能数值模拟研究

超临界二氧化碳向心透平轮背间隙内风阻损失及流动特性研究

混合电解槽阵列协同的风光耦合制氢系统双层多目标优化