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Date of Award


Document Type

Campus Access Master's Report

Degree Name

Master of Science in Mechanical Engineering (MS)

Administrative Home Department

Department of Mechanical Engineering-Engineering Mechanics

Advisor 1

Jeffrey Naber

Committee Member 1

Jeremy Worm

Committee Member 2

David Wanless


A series of tests were carried on a single cylinder Direct Injection Spark Ignition, naturally aspirated, hydra engine at Michigan Technological University to analyze and evaluate Nostrum impinging fuel injectors. Combustion performance with the Nostrum injector has been evaluated at different operating conditions and the results compared with baseline Bosch Direct Injection HDEV injector. Quantify and compare the performance of the Nostrum impinging injector to the Bosch production injector by quantitatively observing different engine performance parameters including ISFC (indicated specific fuel consumption), COV (coefficient of variance) of IMEP (Indicated mean effective pressure), CA50 (crank angle for 50 % burn) and CA10-90 (Burn Duration). These parameters were compared for N-B-N-B comparison, start of injection (SOI) timing sweep and wide open throttle condition with variable intake valve timing and lean lambda. A series of tests with different load conditions and fuel injection pressures were conducted to analyze exhaust emissions by characterizing the hydrocarbon emissions along with combustion inefficiency at various start of injection (SOI) timings. Lambda readings were obtained from wide band sensor as well as the emissions bench. Error difference between the two lambda readings is validated by developing a code using equation solving program (EES).