Simulation Analysis of Miller Cycle on Performance of Supercharged Direct Injection Gasoline Engine

被引：0

作者：

Hu Z. ^{[1
]}

Xu Y. ^{[1
]}

Fang L. ^{[1
]}

Lou D. ^{[1
]}

Tan P. ^{[1
]}

机构：

[1] School of Automotive Studies, Tongji University, Shanghai

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2022年 / 50卷 / 10期

关键词：

hydrodynamics; Miller cycle; one-dimensional model; supercharged direct injection gasoline engine;

D O I：

10.11908/j.issn.0253-374x.21321

中图分类号：

学科分类号：

摘要：

In this paper， the Miller cycle process of hybrid engine is mainly studied. A one-dimensional hydrodynamic model of intake camshaft with 130° wrap angle is established. The effect of Miller cycle realized by independent and joint adjustment of inlet valve opening （IVO） and exhaust valve closing （EVC） on engine performance is simulated and analyzed. It is shown that with the deepening of Miller cycle， under low load conditions，the intake exhaust gas reabsorption mass increases， the volumetric coefficient and pump mean effective pressure （PMEP） decreases， and the brake specific fuel consumption （BSFC） decreases； under medium load condition， the volumetric coefficient increases，the pump mean effective pressure decreases significantly，the crankshaft angle corresponding to 50% heat release rate （CA50） decreases， and the brake specific fuel consumption decreases； under high load conditions，the brake specific fuel consumption increases sharply. The combined regulation of IVO and EVC can further improve the engine performance and increase the thermal efficiency at the best fuel consumption point by 0.43%. © 2022 Science Press. All rights reserved.

引用

页码：1490 / 1499

页数：9

共 36 条

[1] Peng LI, Application of energy saving technology in automobile driving and analysis of its measures［J］, Internal Combustion Engines and Accessories, 16, (2020)
[2] Fuel consumption limits for passenger cars：GB 19578―2021 ［S］
[3] XIE Fangxi, ZHONG Bing, YANG Guozhi, Et al., Design and motion characteristics of cam driven hydraulic variable valve mechanism［J］, Automotive Engineering, 42, 3, (2020)
[4] LIN Chengbo, LIU Jingping, TANG Qijun, Et al., Effect of a variable compression ratio mechanism on gasoline engine performance ［J］, Internal Combustion Engine Engineering, 36, 6, (2015)
[5] ZU Bingfeng, ZHOU Renjie, XU Yuliang, Et al., Application of Miller cycle in typical working conditions of small turbocharged gasoline engine［J］, Internal Combustion Engine Engineering, 38, 6, (2017)
[6] ZHOU Renjie, Application research of Miller cycle on traditional gasoline engine［D］, (2016)
[7] LIU Ziming, Development and key technology research of Miller cycle engine［D］, (2020)
[8] FAN Wei, Jian WU, LI Yunlong, Et al., Study on partial load fuel economy of Miller cycle gasoline engine［J］, Automotive Engine, 2, (2014)
[9] Jiatian HAO, SUN Baigang, Study on improving the compression ratio of hydrogen internal combustion engine by using exhaust gas recirculation and Miller cycle ［J］, Internal Combustion Engine Engineering, 42, 5, (2021)
[10] ZHENG Bin, Tie LI, YIN Tao, Mechanism analysis of Miller cycle improving thermal efficiency of turbocharged direct injection gasoline engine：analysis of partial load condition［J］, Internal Combustion Engine Engineering, 37, 6, (2016)

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