Date of Award


Publication Type

Master Thesis

Degree Name



Mechanical, Automotive, and Materials Engineering

First Advisor

Sobiesiak, Andrzej (Mechanical, Automotive, and Materials Engineering)





Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.


In this work the viability of a simulated biomass gas which resembles in its composition so called producer gas is investigated as a fuel for HCCI engines. There were several fuel compositions used in this study; the main difference in fuel mixture compositions was the change of the H2 to CO ratio. Indicated performance of the HCCI engine was evaluated based on in-cylinder and cycle-resolved pressure measurements. The performance and phasing analysis consisted of peak in-cylinder pressures, pressure rise rates, indicated mean effective pressure (IMEP), indicated efficiency, start of combustion timing, and combustion duration. Combustion phasing and performance of the engine was found to be significantly affected by variations in both intake charge temperature and equivalence ratio. The effects of engine speed are more unclear; however, there are some effects at different engine speeds which are speculated to be attributed to air/fuel mixing and possible charge stratification.