Keywords and Phrases
Carbon Monoxide; Combustion; Cyclic Dynamics; Engines; HCCI; Return Maps
"Homogeneous charge compression ignition (HCCI) is a low temperature combustion mode that contains great potential for decreasing emissions while increasing efficiency in internal combustion engines. The limitation is in that it is inherently difficult to control based on the lack of an external combustion trigger. This thesis outlines the potential of using the combustion residual species of carbon monoxide as a method of controlling the location of combustion by using data from a computer model. The model is a nonlinear five-state thermodynamic model that is coupled with a skeletal chemical kinetic model for PRF96. The model computes the amount of carbon monoxide within the cylinder during partial burn, which is when the engine is most difficult to control, and also calculates the amount of carbon monoxide residual that will be fed forward into the next cycle. The model is verified by comparing experimental data at the steady state and at the onset of partial burn collected from a Hatz 1D50Z engine located on the Missouri S&T campus. The impact of the carbon monoxide on the cyclic dynamics of the engine is observed through return maps displaying cyclic dependence generated by using data from the model. These return maps are created to determine the effects of the naturally produced amounts of carbon monoxide during partial burn, artificially increased amount of carbon monoxide during partial burn and complete combustion, and the effects of the intake temperature on several important engine parameters. These effects observed can be used to determine the relevance of using carbon monoxide as a control for HCCI."--Abstract, page iii.
Drallmeier, J. A.
Bristow, Douglas A.
Mechanical and Aerospace Engineering
M.S. in Mechanical Engineering
Missouri University of Science and Technology
xiii, 171 pages
© 2015 Krishawn Michele Goodwin, All rights reserved.
Thesis - Open Access
Internal combustion engines
Spark ignition engines
Combustion gases -- Testing
Electronic OCLC #
Goodwin, Krishawn Michele, "Thermodynamic and chemical kinetic coupled modeling for the determination of cyclic combustion phasing in HCCI engines" (2015). Masters Theses. 7432.