Complementing syngas with natural gas in spark ignition engines for power production : effects on emissions and combustion

Caligiuri, Carlo (avtor), Žvar Baškovič, Urban (avtor), Renzi, Massimiliano (avtor), Seljak, Tine (avtor), Rodman Oprešnik, Samuel (avtor), Baratieri, Marco (avtor), Katrašnik, Tomaž (avtor)

Power generation units based on the bio-syngas system face two main challenges due to (i) the possible temporary shortage of primary sources and (ii) the engine power derating associated with the use of low-energy density fuels in combustion engines. In both cases, an external input fuel is provided. Hence, complementing syngas with traditional fuels, like natural gas, becomes a necessity. In this work, an experimental methodology is proposed, aiming at the quantification of the impact of the use of both natural gas and syngas in spark ignition (SI) engines on performance and emissions. The main research questions focus on investigating brake thermal efficiency (BTE), power derating, and pollutant emission (NO$_x$, CO, THC, CO$_2$) formation, offering quantitative findings that present the basis for engine optimization procedures. Experimental measurements were performed on a Toyota 4Y-E engine (a 4-cylinders, 4-stroke spark ignition engine) at partial load (10 kW) under different syngas energy shares (SES) and at four different spark ignition timings (10°, 25°, 35° and 45° BTDC). Results reveal that the impact of the different fuel mixtures on BTE is negligible if compared to the influence of spark advance variation on BTE. On the other hand, power derating has proven to be a limiting factor and becomes more prominent with increasing SES. An increasing SES also resulted in an increase of CO and CO$_2$ emissions, while NO$_x$ and THC emissions decreased with increasing SES.

• Jezik: Angleški jezik
• Ključne besede: spark ignition engines, renewable fuels, combustion, syngas, natural gas
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 18 str.
• Številčenje: Vol. 14, iss. 12, art. 3688
• PID: 20.500.12556/RUL-127977
• UDK: 621.43:662.767
• ISSN pri članku: 1996-1073
• DOI: 10.3390/en14123688
• COBISS.SI-ID: 68666115
• Datum objave v RUL: 30.06.2021

Gradivo je del revije

• Naslov: Energies
• Skrajšan naslov: Energies
• Založnik: Molecular Diversity Preservation International
• ISSN: 1996-1073
• COBISS.SI-ID: 518046745

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 21.06.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: motorji s prisilnim vžigom, obnovljiva goriva, zgorevanje, sintezni plin, zemeljski plin