The conventional combustion processes of Spark Ignition (SI) and Compression Ignition (CI) have their respective merits and demerits. Internal combustion engines use certain fuels to utilize those conventional combustion technologies. High octane fuels are required to operate the engine in SI mode, while high cetane fuels are preferable for CI mode of operation. Those conventional combustion techniques struggle to meet the current emissions norms while retaining high efficiency. In particular, oxides of nitrogen (NOx) and particulate matter (PM) emissions have limited the utilization of diesel fuel in compression ignition engines, and conventional gasoline operated SI engines are not fuel efficient. Advanced combustion concepts have shown the potential to combine fuel efficiency and improved emissions performance. Low Temperature Combustion (LTC) offers reduced NOx and PM emissions with comparable modern diesel engine efficiencies. The ability of premixed, low-temperature compression ignition to deliver low PM and NOx emissions is dependent on achieving optimal combustion phasing. Variations in injection pressures, injection schemes and Exhaust Gas Recirculation (EGR) are studied with low octane gasoline LTC. Reductions in emissions are a function of combustion phasing and local equivalence ratio. Engine speed, load, EGR quantity, compression ratio and fuel octane number are all factors that influence combustion phasing. Low cetane fuels have shown comparable diesel efficiencies with low NOx emissions at reasonably high power densities.
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ASME 2011 Internal Combustion Engine Division Fall Technical Conference
October 2–5, 2011
Morgantown, West Virginia, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-4442-7
PROCEEDINGS PAPER
Low Cetane Fuels in Compression Ignition Engine to Achieve LTC
Swami Nathan Subramanian,
Swami Nathan Subramanian
Argonne National Laboratory, Argonne, IL
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Stephen Ciatti
Stephen Ciatti
Argonne National Laboratory, Argonne, IL
Search for other works by this author on:
Swami Nathan Subramanian
Argonne National Laboratory, Argonne, IL
Stephen Ciatti
Argonne National Laboratory, Argonne, IL
Paper No:
ICEF2011-60014, pp. 317-326; 10 pages
Published Online:
February 3, 2012
Citation
Subramanian, SN, & Ciatti, S. "Low Cetane Fuels in Compression Ignition Engine to Achieve LTC." Proceedings of the ASME 2011 Internal Combustion Engine Division Fall Technical Conference. ASME 2011 Internal Combustion Engine Division Fall Technical Conference. Morgantown, West Virginia, USA. October 2–5, 2011. pp. 317-326. ASME. https://doi.org/10.1115/ICEF2011-60014
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