The topic of this paper is the simulation of the airflow characteristics of a large bore two stroke natural gas fueled engine. The modeling was performed with the program WAVE, a computer code developed for engine cycle simulations. The engine studied was a four cylinder Cooper GMV engine. This engine has an articulated crankshaft connecting even and odd bank cylinders. Due to the articulation, the even bank cylinders have different piston profiles, port profiles, and compression ratios than the odd bank cylinders. Due to the non-symmetric timing and articulated geometry of the odd and even banks, the gas flow processes are not the same for each cylinder bank. The different manifold and port pressure profiles result in different amounts of trapped mass in the odd and even banks. The even bank is predicted to have a smaller amount of trapped mass and slightly lower trapping and scavenging efficiencies. Finally, the model predicts that the even bank cylinders attain higher maximum temperatures, which would produce increased NOx.
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ASME 2003 Internal Combustion Engine Division Spring Technical Conference
May 11–14, 2003
Salzburg, Austria
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-3678-9
PROCEEDINGS PAPER
Simulation of the Airflow Characteristics of a Two-Stroke Natural Gas Engine With an Articulated Crank
J. Adair,
J. Adair
Colorado State University, Fort Collins, CO
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A. Kirkpatrick,
A. Kirkpatrick
Colorado State University, Fort Collins, CO
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D. B. Olsen,
D. B. Olsen
Colorado State University, Fort Collins, CO
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H. Gitano-Briggs
H. Gitano-Briggs
Colorado State University, Fort Collins, CO
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J. Adair
Colorado State University, Fort Collins, CO
A. Kirkpatrick
Colorado State University, Fort Collins, CO
D. B. Olsen
Colorado State University, Fort Collins, CO
H. Gitano-Briggs
Colorado State University, Fort Collins, CO
Paper No:
ICES2003-0552, pp. 423-428; 6 pages
Published Online:
February 4, 2009
Citation
Adair, J, Kirkpatrick, A, Olsen, DB, & Gitano-Briggs, H. "Simulation of the Airflow Characteristics of a Two-Stroke Natural Gas Engine With an Articulated Crank." Proceedings of the ASME 2003 Internal Combustion Engine Division Spring Technical Conference. Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components. Salzburg, Austria. May 11–14, 2003. pp. 423-428. ASME. https://doi.org/10.1115/ICES2003-0552
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