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A comparison of Miller and Otto cycle natural gas engines for small scale CHP applications

Mikalsen, R.; Wang, Y.D.; Roskilly, A.P.

Authors

R. Mikalsen



Abstract

This paper presents an investigation into the feasibility and potential advantages of a small scale Miller cycle natural gas engine for applications such as domestic combined heat and power systems. The Miller cycle engine is compared to a standard Otto cycle engine using cycle analyses and multidimensional simulation, and basic engine design implications are discussed. It is found that the Miller cycle engine has a potential for improved fuel efficiency, but at the cost of a reduced power to weight ratio. A fuel efficiency advantage of 5→10% compared to a standard Otto cycle engine appears possible, however it is stated that further investigations, in particular into the topic of engine friction, are required in order to validate the findings.

Citation

Mikalsen, R., Wang, Y., & Roskilly, A. (2009). A comparison of Miller and Otto cycle natural gas engines for small scale CHP applications. Applied Energy, 86(6), 922-927. https://doi.org/10.1016/j.apenergy.2008.09.021

Journal Article Type Article
Acceptance Date Sep 28, 2008
Online Publication Date Nov 5, 2008
Publication Date 2009-06
Deposit Date Nov 5, 2019
Journal Applied Energy
Print ISSN 0306-2619
Electronic ISSN 1872-9118
Publisher Elsevier
Volume 86
Issue 6
Pages 922-927
DOI https://doi.org/10.1016/j.apenergy.2008.09.021
Public URL https://durham-repository.worktribe.com/output/1284242