Hydrogen and natural gas comparison in diesel HCCI engines -a review

Hairuddin, A. Aziz and Wandel, Andrew P. and Yusaf, Talal (2010) Hydrogen and natural gas comparison in diesel HCCI engines -a review. In: 2010 Southern Region Engineering Conference (SREC2010), 11-12 Nov 2010, Toowoomba, Australia.

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Abstract—Homogeneous charge compression ignition
(HCCI) enginesuse a new mode of combustion. The new
challenges in developing HCCI engines arethe
difficultiesin: controlling the auto-ignition of the mixture
and the heat release rate at high load operation, achieving
a cold start, meeting emission standards and controlling
knock. At low engine speeds, early auto-ignition can occur,
possibly leading to knocking, while late auto-ignition at
high engine speeds will make HCCI susceptible to misfire.
Hydrogengreatly reduces emission levels but with reduced
power. However, when it is combined with diesel in dual
fuel mode, low NOx, CO and particulate matter emission
levels are achieved while increasing engine efficiency by
13-16%. Numerical methods areused to predict HCCI
engines’ performance, which is cost efficient compared
toexperimentation alone. The multi-zone method promises
better simulation results by combining detailed chemical
kineticswith simplified 3Dmodellingso that turbulence and
inhomogeneity in the mixture are considered; good
agreement between simulations and experiments has been
achieved. Specific strategies used in the experimental and
numerical methods, and other issues associated withHCCI
engines are discussed in this paper.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: USQ conference. Proceedings available in http://www.usq.edu.au/engsummit/proceedings
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 14 Feb 2011 06:13
Last Modified: 10 Apr 2017 03:05
Uncontrolled Keywords: component; HCCI; hydrogen; diesel; numerical
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
URI: http://eprints.usq.edu.au/id/eprint/18340

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