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The Effects Of Fuel Additives On Diesel Engine Emissions During Steady State And Transient Operation, John P. Nuszkowski
The Effects Of Fuel Additives On Diesel Engine Emissions During Steady State And Transient Operation, John P. Nuszkowski
Graduate Theses, Dissertations, and Problem Reports
Internal combustion engines have propelled society's transportation and power needs for the last century. However, with the regulatory demand to reduce air pollution, internal combustion engines are a major focus to reduce the emissions from these engines. Compression ignition or diesel engines are a major contributor to NOx and PM pollution. However, the life of these engines is much longer than that of their spark-ignited counterparts, causing the fleet of diesel engines to consist of a significant number of old, higher polluting engines. Fuel additives are one method of reducing emissions and/or enhancing performance in these older diesel engines without …
Efficiency Optimization And Control Of Permanent Magnet Synchronous Brushless Motors In Three-Phase Pulse Width Modulated Voltage Source Inverter Drives, Olusegun Richard Solomon
Efficiency Optimization And Control Of Permanent Magnet Synchronous Brushless Motors In Three-Phase Pulse Width Modulated Voltage Source Inverter Drives, Olusegun Richard Solomon
Graduate Theses, Dissertations, and Problem Reports
In high performance drives where it is desirable to exploit the usefulness of reluctance torque and machine saliency, permanent magnet synchronous brushless motors are machines of choice. However, speed control of these machines especially in the flux weakening region becomes more complex due to the non-linear coupling among the winding currents as well as the nonlinearity present in the torque. While numerous research efforts in the past have considered control and efficiency improvements of induction motors, and synchronous motors with field windings, research efforts in developing an efficiency optimization and control strategy applicable to all salient-type permanent magnet synchronous brushless …
Design And Performance Analysis Of Electric Vehicles Fed By Multiple Fuel Cells, Pardis Khayyer
Design And Performance Analysis Of Electric Vehicles Fed By Multiple Fuel Cells, Pardis Khayyer
Graduate Theses, Dissertations, and Problem Reports
Recent advances in fuel cell developments have introduced them to many applications such as hybrid electric vehicles and heat/power cogenerations. They bring the advantage of clean energy and decrease the dependency on imported oil by providing fuel efficient devices in many applications such as electric vehicles. Conventional designs of hybrid fuel cell vehicles make use of a single fuel cell power source and a storage device to provide the base load and transients in various driving cycles. This thesis proposes a new configuration of multiple fuel cell power sources in hybrid fuel cell vehicles. Fuel cells are downsized in this …