Award Date


Degree Type


Degree Name

Master of Science (MS)


Mechanical Engineering

First Committee Member

Robert Boehm

Number of Pages



Traditional means for converting an engine to operate on hydrogen fuel incorporates port injection. The typical method for controlling emissions on a port injection engine is to operate the engine lean (typical AFR of 70:1) and/or incorporate an EGR system. The result of utilizing these methods is an appreciable reduction in power output. In-cylinder injection of an internal combustion engine provides a reliable method for delivering hydrogen fuel whereby fuel efficiency, power output and emissions levels are improved. Injection of hydrogen directly into the combustion chamber allows control of various factors such as burn rate and combustion timing which influence the production of emissions in the form of NOx. Testing of the converted engines has also shown an increase in power due to an increase in volumetric efficiency and a reduction of emissions at near stoichiometric operation. Details for converting an engine to an in-cylinder hydrogen injection, computer systems control, emissions testing and performance evaluation are given.


Combustion; Cylinder; Development; Engine; Fueled; Hydrogen; Injection; Internal

Controlled Subject

Mechanical engineering; Automobiles--Design and construction

File Format


File Size

1648.64 KB

Degree Grantor

University of Nevada, Las Vegas




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