Study on the Influence of Miller Cycle Combined with Two-Stage Injection on Mixture During Gasoline Direct Injection Engine Starting

WEI Shengli; ZHANG Shaobang; DING Tongyuan; NI Shidong; ZHANG Zhicheng

doi:10.7652/xjtuxb202304002

您当前的位置：

首页 >

文章列表页 >

Study on the Influence of Miller Cycle Combined with Two-Stage Injection on Mixture During Gasoline Direct Injection Engine Starting

更新时间：2025-07-09

- Study on the Influence of Miller Cycle Combined with Two-Stage Injection on Mixture During Gasoline Direct Injection Engine Starting
- Vol. 57, Issue 4, Pages: 11-21(2023)
- 作者机构：
  
  1. 江苏大学汽车与交通工程学院,江苏,镇江,212013
  2. 吉孚汽车技术(苏州)有限公司, , ),江苏,苏州,215100
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202304002
  CLC： TK411
- Online First：10 April 2023，
  
  Published：2023
- 稿件说明：
移动端阅览
WEI Shengli, ZHANG Shaobang, DING Tongyuan, et al. Study on the Influence of Miller Cycle Combined with Two-Stage Injection on Mixture During Gasoline Direct Injection Engine Starting[J]. 2023, 57(4): 11-21.
DOI：

WEI Shengli, ZHANG Shaobang, DING Tongyuan, et al. Study on the Influence of Miller Cycle Combined with Two-Stage Injection on Mixture During Gasoline Direct Injection Engine Starting[J]. 2023, 57(4): 11-21. DOI： 10.7652/xjtuxb202304002.

摘要

为探究直喷发动机第二次喷油时刻、两次喷油比例对燃油蒸发与混合气形成质量的影响

在一台汽油缸内直喷(GDI)发动机进气门早关(EIVC)米勒循环单次喷射的基础上

采用控制变量的方法

在两次喷油量相同的情况下

设计了7组不同的第二次喷油时刻方案

并在最优喷油正时的基础上

设计了6组不同喷油比例的方案进行试验。结果表明:在压缩冲程中后期

缸内湍动能随着喷油重心的后移而增强; 随着二次喷油正时的推迟

更多的燃油附着位置从活塞顶部转向缸套表面; 当二次喷油正时为进气上止点后150°曲轴转角、喷油比例为2:1时

附壁油膜蒸发效果最佳

点火时刻缸内残余油膜量最少

较原机下降95%

并且该条件下当量比分布良好

在火花塞附近形成了当量比为1.3的微浓混合气

有助于火核的形成。

Abstract

Based on an early inlet valve closing(EIVC)single injection of a gasoline direct injection(GDI)Miller cycle engine

the method of controlling variables was adopted to study the influence of the second injection time and the ratio of the two injections on the quality of fuel evaporation and mixture formation. The two injections were set to have the same quantity

and seven different sets of second injection timing programs were designed. Based on the optimal injection timing

six groups of different first and second injection ratios were designed. The results show that in the middle and later stages of the compression stroke

the turbulent kinetic energy in the cylinder increases with the backward shift of the fuel injection center of gravity

and with the delay of the timing of the secondary fuel injection

more fuel attachment positions shift from the top of the piston to the surface of the cylinder liner. When the secondary injection timing is 150° crankshaft angle after top dead center(TDC)and the fuel injection ratio is 2:1

the wall film evaporation effect is the best

and the residual wall film mass in the cylinder is the lowest at ignition time

which is 95% lower than that of the original engine.Under this condition

the equivalent ratio distribution is good. A slightly concentrated mixture with an equivalent ratio of 1.3 is formed near the spark plug

which is helpful for the formation of a fire nucleus.

关键词

Keywords

references

MATSUDA M, YOKOMORI T, SHIMURA M, et al. Development of cycle-to-cycle variation of the tumble flow motion in a cylinder of a spark ignition internal combustion engine with Miller cycle [J]. International Journal of Engine Research, 2021, 22(5): 1512-1524.

张振东, 屈卓燊, 王博, 等. 米勒循环和废气再循环对涡轮增压汽油机燃烧性能的影响和优化 [J]. 内燃机工程, 2020, 41(5): 48-53, 61.

ZHANG Zhendong, QU Zhuoshen, WANG Bo, et al. Influence and optimization of Miller cycle and exhaust gas recirculation on combustion performance of a turbocharged gasoline engine [J].Chinese Internal Combustion Engine Engineering, 2020, 41(5): 48-53, 61.

WANG Peng, TANG Xuyang, SHI Lei, et al. Experimental investigation of the influences of Miller cycle combined with EGR on performance, energy and exergy characteristics of a four-stroke marine regulated two-stage turbocharged diesel engine [J]. Fuel, 2021, 300: 120940.

韩义勇, 华剑雄, 王利民, 等. 基于喷油策略和阿特金森循环的汽油压燃发动机高负荷性能优化研究 [J]. 内燃机工程, 2020, 41(4): 54-62.

HAN Yiyong, HUA Jianxiong, WANG Limin, et al. Optimization of gasoline compression ignition engine performance at high loads with advanced injection strategy and Atkinson cycle [J].Chinese Internal Combustion Engine Engineering, 2020, 41(4): 54-62.

李洋洋, 段雄波, 刘敬平, 等. 喷射控制策略对增压直喷汽油机燃烧和性能的影响 [J]. 中南大学学报(自然科学版), 2020, 51(3): 805-815.

LI Yangyang, DUAN Xiongbo, LIU Jingping, et al. Influence of injection strategies on combustion and performance of turbocharged gasoline direct ignition engine [J]. Journal of Central South University(Science and Technology), 2020, 51(3): 805-815.

张振东. 直喷汽油机冷启动多次喷射对油膜特性和Soot的影响研究 [D]. 长春: 吉林大学, 2020.

钟玉伟, 魏超, 潘明章. 多次喷射策略对正戊醇-柴油混合燃料燃烧及有害排放影响的模拟研究 [J]. 内燃机工程, 2022, 43(3): 85-93.

ZHONG Yuwei, WEI Chao, PAN Mingzhang. Simulation study on effects of vultiple injection strategy on combustion and pollutant emissions of N-pentanol-diesel blended fuel [J].Chinese Internal Combustion Engine Engineering, 2022, 43(3): 85-93.

信曦, 丁宁, 张小矛, 等. 二次喷射对直喷增压汽油机混合气形成与燃油湿壁影响的数值研究 [J]. 内燃机工程, 2016, 37(6): 144-150.

XIN Xi, DING Ning, ZHANG Xiaomao, et al. Numerical research into effect of two-stage injection on mixture formation and wall wetting in a turbocharged GDI engine [J]. Chinese Internal Combustion Engine Engineering, 2016, 37(6): 144-150.

陈小复. 汽车发动机技术新动向 [J]. 汽车与配件, 1995(1): 16-17.

CHEN Xiaofu. New trends in automobile engine technology [J]. Automobile Parts, 1995(1): 16-17.

平生, 张奇. 日本将轮船发动机应用到汽车上 [J]. 国外科技动态, 1994(8): 55-56.

PING Sheng, ZHANG Qi. Japan applies ship engines to cars [J].Recent Developments in Science Technology Abroad, 1994(8): 55-56.

FLIERL R, KLÜTING M. The third generation of valvetrains: new fully variable valvetrains for throttle-free load control [C] //SAE 2000 World Congress. Warrendale, PA, USA: SAE International, 2000: 2000-01-1227.

KESGIN U. Efficiency improvement and NOx emission reduction potentials of two-stage turbocharged Miller cycle for stationary natural gas engines [J]. International Journal of Energy Research, 2005, 29(3): 189-216.

房明成. 定容弹内两次喷射策略下预主喷射喷雾与燃烧特性的研究 [D]. 江苏镇江: 江苏大学, 2018.

SATHISHKUMAR S, IBRAHIM M M. Comparison of the hydrogen powered homogeneous charge compression ignition mode with multiple injection schedules and the dual fuel mode using a twin-cylinder engine [J]. International Journal of Hydrogen Energy, 2021, 46(1): 1315-1329.

王正江, 申立中, 姚国仲, 等. 柴油机多次喷射干扰的喷油脉宽评估方法及抑制策略 [J]. 农业工程学报, 2019, 35(21): 43-50.

WANG Zhengjiang, SHEN Lizhong, YAO Guozhong, et al. Estimation method of injection pulse width and suppression strategy for multiple injection interference of diesel engine [J].Transactions of the Chinese Society of Agricultural Engineering, 2019, 35(21): 43-50.

KAWASUMI I, YASUI Y, HIGASHITANI K, et al. Cooperated control of multi stage injection system for direct injection gasoline engine [C] //2006 American Control Conference. Piscataway, NJ, USA: IEEE, 2006: 6.

TURKCAN A, OZSEZEN A N, CANAKCI M. Effects of second injection timing on combustion characteristics of a two stage direct injection gasoline-alcohol HCCI engine [J]. Fuel, 2013, 111: 30-39.

王永伟, 魏民祥, 姜学敏. 水平对置GDI发动机多段喷射控制策略研究 [J]. 公路与汽运, 2014(3): 1-5.

WANG Yongwei, WEI Minxiang, JIANG Xuemin. Research on multi-stage injection control strategy of horizontally opposed GDI engine [J]. Highways Automotive Applications, 2014(3): 1-5.

魏胜利, 倪士栋, 丁统元, 等. 冷启动下米勒循环对缸内直喷汽油机混合气形成影响研究 [J]. 西安交通大学学报, 2022, 56(8): 122-130.

WEI Shengli, NI Shidong, DING Tongyuan, et al. Research on the influence of Miller cycle on mixture formation in GDI engine under cold start [J]. Journal of Xi'an Jiaotong University, 2022, 56(8): 122-130.

LAMIEL Q, LAMARQUE N, HÉLIE J, et al. On the spreading of high-pressure spray-generated liquid wall films [J]. International Journal of Multiphase Flow, 2021, 139: 103619.

WANG Chenxi, PEI Yiqiang, QIN Jing, et al. Laser induced fluorescence investigation on deposited fuel film from spray impingement on viscous film over a solid wall [J]. Energy, 2021, 231: 120893.

O'ROURKE P J, AMSDEN A A. A particle numerical model for wall film dynamics in port-injected engines [C] //1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition. Warrendale, PA, USA: SAE International, 1996: 961961.

WEI Haiqiao, SHAO Aifang, HUA Jianxiong, et al. Effects of applying a Miller cycle with split injection on engine performance and knock resistance in a downsized gasoline engine [J]. Fuel, 2018, 214: 98-107.

KIM K, KIM D, JUNG Y, et al. Spray and combustion characteristics of gasoline and diesel in a direct injection compression ignition engine [J]. Fuel, 2013, 109: 616-626.

鲍新新. 多次喷射对缸内直喷汽油机微粒排放影响的仿真研究 [D]. 长春: 吉林大学, 2018.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research on the Influence of Miller Cycle on Mixture Formation in GDI Engine under Cold Start

Effects of Steam Addition on the Swirl Combustion and Emission Characteristics of Cracked Ammonia

Review of the Application of EBSILON Software in Combined Heat and Power System Optimization

Mechanism and Optimal Control Strategy for Hysteresis in Rapid Dehumidification Response of Indirect Thermal Systems in Electric Vehicles

Windage Loss and Flow Characteristics in Impeller Back Gaps of sCO2 Radial Inflow Turbines

Related Author

DING Tongyuan

Related Institution

GRC Automotive Technology(Suzhou)Co., Ltd.

⁰