Effect of Hydrogen-Rich Syngas Direct Injection on Combustion and Emissions in a Combined Fuel Injection—Spark-Ignition Engine

Zhen Shang, Yao Sun (), Xiumin Yu, Ling He and Luquan Ren
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Zhen Shang: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Yao Sun: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Xiumin Yu: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Ling He: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Luquan Ren: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China

Sustainability, 2023, vol. 15, issue 11, 1-15

Abstract: To utilize the high efficiency of gasoline direct injection (GDI) and solve the high particulate number (PN) issue, hydrogen-rich syngas has been adopted as a favorable sustainable fuel. This paper compares and analyzes the effects of the injection configurations (GDI, gasoline port injection combined with GDI (PGDI), and gasoline port injection combined with hydrogen-rich syngas direct injection (PSDI)) and fuel properties on combustion and emissions in a spark-ignition engine. The operational points were fixed at 1800 rpm with a 15% throttle position, and the excess air ratio was 1.1. The conclusions show that PSDI gained the highest maximum brake thermal efficiency (BTE) at the MBT point, and the maximum BTE for GDI was only 94% of that for PSDI. PSDI’s CoV IMEP decreased by 22% compared with GDI’s CoV IMEP . CO and HC emissions were reduced by approximately 78% and 60% from GDI to PSDI among all the spark timings, respectively, while PSDI emitted the highest NO X emissions. As for particulate emissions, PSDI emitted the highest nucleation-mode PN, while GDI emitted the lowest. However, the accumulation-mode PN emitted from PSDI was approximately 52% of that from PGDI and 5% of that from GDI. This study demonstrates the benefits of PSDI for sustainability in vehicle engineering.

Keywords: hydrogen-rich syngas; syngas direct injection; combined fuel injection; brake thermal efficiency; particulate number (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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