Numerical investigation of the effect of two-step injection (direct and port injection) of hydrogen blending and natural gas on engine performance and exhaust gas emissions

Javad Zareei, Abbas Rohani, Farhad Mazari and Maria Vladimirovna Mikkhailova

Energy, 2021, vol. 231, issue C

Abstract: The present work investigates the effect of two-step fuel injection on a four-cylinder engine which has been altered from port injection to direct injection. Hydrogen enriched compressed natural gas (HCNG) blend has been utilized as a substitute in replacement of gasoline. Initially, CNG as a 10% of the total fuel mass fraction is injected into the air manifold and the remaining 90% fuel is HCNG which is injected into the cylinder by direct injection. Primarily, the CNG was injected at 160° BTDC with 20° stroke duration. HCNG fuel was injected at 130° BTDC with a 50° stroke duration being injected from (0%–40%) step.

Keywords: Two step injection; Hydrogen; Natural gas; Performance; Emissions (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:231:y:2021:i:c:s0360544221012056

DOI: 10.1016/j.energy.2021.120957

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