Modeling the Environmental and Thermal Efficiency Cost of Cylinder-To-Cylinder Variation
Abstract
Environment concerns are adding additional focus to the reduction of greenhouse gas emissions from internal combustion engines. Internal combustion engines operating on natural gas have become an alternative to coal-fired power plants due to the lower carbon content of the natural gas. The reduction in carbon content of the natural gas reduces the CO2 emissions associated with electrical power generation. This drives an ever increasing need to reduce CO2 emissions from spark ignited natural gas engines used for power generation. One of the sources for the CO2 emission from power generation engines is the cylinder-to-cylinder variation. The capital requirement for the large-bore natural gas power generation engines produces challenges for research testing on multi-cylinder engines to determine root causes of cylinder-to-cylinder variation. This Capstone Project proposes and evaluates an analytical method to model the likely root causes for the observed cylinder-to-cylinder variation on a multi-cylinder engine. The method uses regression based correlations developed during single-cylinder research engine development testing to analytically determine the likely lambda and energy flow going into each of the cylinders of a multi-cylinder engine. The method also evaluates the additional CO2 produced because of the cylinder-to-cylinder variation.
Degree
M.Sc.
Advisors
Dunlap, Purdue University.
Subject Area
Design
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