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Optimization Of A Brushless Permanent Magnet Linear Alternator For Use With A Linear Internal Combustion Engine, William Robert Cawthorne
Optimization Of A Brushless Permanent Magnet Linear Alternator For Use With A Linear Internal Combustion Engine, William Robert Cawthorne
Graduate Theses, Dissertations, and Problem Reports
Numerous applications require the generation of electric power without connection to the utility power system. Many industrial, commercial, and personal applications require uninterrupted electrical power in the event of a utility failure. Additionally, the nature of military field operations necessitates the ability to generate electricity in areas where connection to the utility is impractical or impossible. Generation units selected for these applications must be reliable, efficient, compact, and lightweight.;Presently, rotary internal combustion engines coupled with rotary alternators are the primary generation unit used in these applications. This research contends that a tubular brushless permanent magnet linear alternator with a linear …
In -Cylinder Combustion -Based Virtual Emissions Sensing, Michael L. Traver
In -Cylinder Combustion -Based Virtual Emissions Sensing, Michael L. Traver
Graduate Theses, Dissertations, and Problem Reports
The development of a real-time, on-board measurement of exhaust emissions from heavy-duty engines would offer tremendous advantages in on-board diagnostics and engine control. In the absence of suitable measurement hardware, an alternative approach is the development of software-based predictive approaches. This study demonstrates the feasibility of using in-cylinder pressure-based variables as the inputs to predictive neural networks that are then used to predict engine-out exhaust gas emissions. Specifically, a large steady-state engine operation data matrix provides the necessary information for training a successful predictive network while at the same time eliminating errors produced by the dispersive and time-delay effects of …
Head Impact Characterization Of Generic A-Pillar Of An Automobile, Subramani Balasubramanyam
Head Impact Characterization Of Generic A-Pillar Of An Automobile, Subramani Balasubramanyam
Graduate Theses, Dissertations, and Problem Reports
The need to provide enhanced occupant protection for all impact conditions experienced in automobile crashes poses a great challenge. Several safety features such as seatbelts and airbags have been developed to reduce occupant injuries in the event of a crash. However, new studies have indicated that even with these safety features, head impact with the upper interior components have resulted in many injuries leading to fatalities in certain impact conditions such as side collision and rollover. Recent regulations imposed by NHTSA concerning head impact scenarios in automotive crashes are designed to provide maximum head impact protection against several locations on …
Mean Value Modeling And Control Of A Diesel Engine Using Neural Networks, Yasser Yacoub
Mean Value Modeling And Control Of A Diesel Engine Using Neural Networks, Yasser Yacoub
Graduate Theses, Dissertations, and Problem Reports
Increasingly stringent emissions legislation and demands for improved fuel economy have mandated the need for advanced control algorithms and complicated the diesel engine calibration procedure. To this end, a neural network-based mean value model of a modern turbocharged direct injection diesel engine has been developed and validated. For a pre-specified engine speed schedule and control vector trajectory, the engine model was shown to produce accurate predictions of the turbocharger manifold charging dynamics and combustion efficiency through engine brake torque predictions. The mean value model was coupled with several sub-models to predict exhaust gaseous and particulate emissions and satisfactory predictions were …