Quantitative Analysis of Water Injection Mass and Timing Effects on Oxy-Fuel Combustion Characteristics in a GDI Engine Fuelled with E10

Hao Chen, Chenxi Wang (), Xiang Li (), Yongzhi Li, Miao Zhang, Zhijun Peng, Yiqiang Pei, Zhihao Ma, Xuewen Zhang, Peiyong Ni, Rohitha Weerasinghe and Raouf Mobasheri
Additional contact information
Hao Chen: School of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471023, China
Chenxi Wang: State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
Xiang Li: School of Mechanical Engineering, Nantong University, Nantong 226019, China
Yongzhi Li: Y&C Engine Co., Ltd., Wuhu 241080, China
Miao Zhang: Yijiahe Technology Co., Ltd., Shenzhen 518028, China
Zhijun Peng: School of Engineering, University of Lincoln, Lincoln LN6 7TS, UK
Yiqiang Pei: State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
Zhihao Ma: School of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471023, China
Xuewen Zhang: School of Mechanical Engineering, Nantong University, Nantong 226019, China
Peiyong Ni: School of Mechanical Engineering, Nantong University, Nantong 226019, China
Rohitha Weerasinghe: School of Computer Science and Technology, University of Bedfordshire, Luton LU1 3JU, UK
Raouf Mobasheri: UMR 9189-CRIStAL-Centre de Recherche en Informatique Signal et Automatique de Lille, CNRS, University Lille, F-59000 Lille, France

Sustainability, 2023, vol. 15, issue 13, 1-17

Abstract: The climate change issue has become a growing concern due to the increasing greenhouse gas emissions. To achieve carbon neutrality for mitigating the climate problem, the oxy-fuel combustion (OFC) technique on internal combustion engines (ICEs) has attracted much attention. Furthermore, the water injection (WI) strategy was proven effective in improving the combustion process and thermal efficiency in engines under OFC mode. However, WI strategy effects on gasoline direct injection (GDI) engines fuelled with gasoline–alcohol blends have not been reported. This study quantitatively analysed WI mass and timing effects on oxy-fuel combustion performance from a GDI engine fuelled with E10 (10% ethanol and 90% gasoline in mass) by simulation. The results show that equivalent brake-specific fuel consumption (BSFC E ) shows a monotonically decreasing trend with the increase in the water–fuel mass ratio ( R w f ) from 0 to 0.2. However, further increasing R w f would cause a deterioration in BSFC E due to the enhanced cooling effects of water vaporisation. Moreover, an appropriate water injection timing ( t W I ) could be explored for improving OFC performance, especially for large R w f conditions. The difference in BSFC E between t W I = −100°CA and t W I = −60°CA can be up to around 6.3 g/kWh by increasing R w f to 0.6.

Keywords: oxy-fuel combustion (OFC); water injection (WI); gasoline direct injection (GDI) engine; E10; simulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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