Effects of Hydrogen Addition on Automotive Lean-Burn Natural Gas Engines: Critical Review
Publication: Journal of Energy Engineering
Volume 142, Issue 2
Abstract
Natural gas (NG) is a gaseous fuel, which has been extensively used and investigated in spark-ignition automotive engines (SI). Combining it with lean combustion has shown the potential to reduce emissions and improve efficiency compared to stoichiometric gasoline engines. The main limitations of lean NG combustion are instability and ignitability. Supplementing NG with hydrogen (H2) is considered a solution to lean NG combustion limitations and it has been studied extensively in the literature. This study is focused on reviewing the work performed by researchers on the effect of partial supplementation of NG by on combustion, emissions and performance of SI automotive engines. addition has been shown to accelerate combustion, extend the lean ignition limit, and improve combustion efficiency. However, it decreases the power output of the engine and increases heat transfer to cylinder walls. The lean ignition limit extension offered by enables increased efficiency and reduction.
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Journal of Energy Engineering
Volume 142 • Issue 2 • June 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Apr 20, 2015
Accepted: Aug 10, 2015
Published online: Oct 16, 2015
Discussion open until: Mar 16, 2016
Published in print: Jun 1, 2016
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