Precombustion chambers (PCCs) are an ignition technology for large bore, natural gas engines, which can extend the lean operating limit through improved combustion stability. Previous research indicates that the PCC is responsible for a significant portion of engine-out emissions, especially near the lean limit of engine operation. In this work, six concept PCC designs are developed with the objective of reducing engine-out emissions, focusing on oxides of nitrogen . The design variables include chamber geometry, chamber volume, fuel delivery, nozzle geometry, and material thermal conductivity. The concepts are tested on a single cylinder of a large bore, two-stroke cycle, lean burn, natural gas compressor engine, and the results are compared with stock PCC performance. The pollutants of interest include , carbon monoxide, total hydrocarbons, and volatile organic compounds (VOCs). The results indicate that PCC volume has the largest effect on the overall tradeoff. Multiple nozzles and electronic PCC fuel control were found to enhance main chamber combustion stability, particularly at partial load conditions. The PCC influence on VOCs was insignificant; rather, VOCs were found to be heavily dependent on fuel composition.
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December 2010
Research Papers
Precombustion Chamber Design for Emissions Reduction From Large Bore NG Engines
Dean J. Simpson,
Dean J. Simpson
Engines and Energy Conversion Laboratory,
Colorado State University
, 430 N. College Avenue, Fort Collins, CO 80523
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Daniel B. Olsen
Daniel B. Olsen
Engines and Energy Conversion Laboratory,
Colorado State University
, 430 N. College Avenue, Fort Collins, CO 80523
Search for other works by this author on:
Dean J. Simpson
Engines and Energy Conversion Laboratory,
Colorado State University
, 430 N. College Avenue, Fort Collins, CO 80523
Daniel B. Olsen
Engines and Energy Conversion Laboratory,
Colorado State University
, 430 N. College Avenue, Fort Collins, CO 80523J. Eng. Gas Turbines Power. Dec 2010, 132(12): 122802 (7 pages)
Published Online: August 30, 2010
Article history
Received:
December 4, 2008
Revised:
February 2, 2010
Online:
August 30, 2010
Published:
August 30, 2010
Citation
Simpson, D. J., and Olsen, D. B. (August 30, 2010). "Precombustion Chamber Design for Emissions Reduction From Large Bore NG Engines." ASME. J. Eng. Gas Turbines Power. December 2010; 132(12): 122802. https://doi.org/10.1115/1.4001293
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