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Optimization Of Operating Parameters For Minimum Mechanical Specific Energy In Drilling, Todd Robert Hamrick
Optimization Of Operating Parameters For Minimum Mechanical Specific Energy In Drilling, Todd Robert Hamrick
Graduate Theses, Dissertations, and Problem Reports
Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute …
Emissions Reduction Benefits Of Adapting Electronic Closed Loop Fueling Control On A Mechanically Controlled Spark-Ignited Engine, Frederick Scott Richmond
Emissions Reduction Benefits Of Adapting Electronic Closed Loop Fueling Control On A Mechanically Controlled Spark-Ignited Engine, Frederick Scott Richmond
Graduate Theses, Dissertations, and Problem Reports
Recent government gaseous exhaust emissions regulations have been expanded to include a variety of mobile air pollution sources. Exhaust emissions from non-road engines have recently become a focus of Environmental Protection Agency (EPA) regulations. The term "non-road engines" covers many industrial and general aviation (GA) type engines that are currently unregulated. This study examines the gaseous exhaust gas emissions produced from a mechanically-controlled Lycoming IO-360-B GA engine and studies the benefits of conversion to electronic fuel injection with closed loop feedback control. The study concludes that the overall gaseous exhaust emissions from the unmodified engine far exceed current automotive standards. …