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Cycles And Weight Effects On Emissions And Development Of Predictive Emissions Models For Heavy Duty Trucks, Kuntal A. Vora
Cycles And Weight Effects On Emissions And Development Of Predictive Emissions Models For Heavy Duty Trucks, Kuntal A. Vora
Graduate Theses, Dissertations, and Problem Reports
NOX and PM emissions data from the 5--mode CARB HHDDT Schedule, UDDS, and AC5080 were reviewed, with reference to each other. Next, two-dimensional correlations were used to predict the emissions rate on one cycle from the rates of two other cycles. The two-dimensional analysis yielded better correlations.;The emission of NOX, CO, CO2, HC and PM were analyzed with respect to weight. Vehicles did not follow linear NOX emissions trends over large weight ranges. Fleet-wide emissions for HHDDT could be predicted.;Lastly, a method was proposed to predict emissions based on the vehicle's emissions history from other cycles and on the properties …
Ignition By Air Injection (Cibai) For Controlled Auto-Ignition In A Cfr Engine, Fernando Echavarria
Ignition By Air Injection (Cibai) For Controlled Auto-Ignition In A Cfr Engine, Fernando Echavarria
Graduate Theses, Dissertations, and Problem Reports
Compression ignition by air injection (CIBAI) has been successfully achieved in a modified single cylinder, four-stroke, spark ignition cooperative fuel research (CFR) engine. The CIBAI cycle was invented by Professor John Loth and Professor Gary Morris, US patent No's: 6,994,057 Feb. 7, 2006 and 6,899,061 May 31, 2005. This new revolutionary combustion concept has the potential to become an alternative to traditional (SI) spark ignited and compression ignited (CI) diesel engines.;The objective of this dissertation was to demonstrate experimentally the viability of achieving ignition by air injection (CIBAI) for controlled auto-ignition in a CFR engine. This experimental work involved the …
A Work-Based Window Method For Calculating In-Use Brake-Specific Oxides Of Nitrogen Emissions Of Heavy -Duty Diesel Engines, Benjamin C. Shade
A Work-Based Window Method For Calculating In-Use Brake-Specific Oxides Of Nitrogen Emissions Of Heavy -Duty Diesel Engines, Benjamin C. Shade
Graduate Theses, Dissertations, and Problem Reports
Heavy-duty diesel engines (HDDEs) are currently certified in an engine dynamometer test cell over defined test cycles, such as the Federal Test Procedure (FTP) or the Supplemental Emissions Test (SET). In addition to certification testing, those HDDEs are subjected to in-use testing where gaseous emissions levels are not to exceed 125% of the certification level plus an additional 0.5 g/bhp-hr for instrument and analyzer inaccuracies. These HDDEs are required to meet these limits in the Not-To-Exceed (NTE) zone, which is defined by 40 CFR §86.1370-2007. In this method, emissions are calculated when an engine is operating in the NTE zone …
Investigation Of Techniques And Effects Of Diesel Particulate Filter Cleaning, Nathaniel Moles
Investigation Of Techniques And Effects Of Diesel Particulate Filter Cleaning, Nathaniel Moles
Graduate Theses, Dissertations, and Problem Reports
As the emissions standards placed on diesel engine exhaust become more stringent, the use of exhaust aftertreatment devices such as diesel particulate filters has become a more attractive means to meet those standards. During the use of these filters some of the particulate captured, usually ash, begins to restrict the flow through the filter. This increases the backpressure in the exhaust system and requires routine cleaning maintenance. This study reviewed engine technology used to reduce particulate emissions and investigated the effects of off-line cleaning of diesel particulate filters using compressed air and water flowing in the reverse direction of the …
Development Of A Vehicle Road Load Model For Ecu Broadcast Power Verification In On-Road Emissions Testing, Nathan A. Moynahan
Development Of A Vehicle Road Load Model For Ecu Broadcast Power Verification In On-Road Emissions Testing, Nathan A. Moynahan
Graduate Theses, Dissertations, and Problem Reports
West Virginia University (WVU) has become an industry leader in heavy-duty emissions testing and is continuously improving and updating their testing goals, procedures, and quality. As emissions testing is conducted at WVU in a real-world, on-road environment, engine parameter values are read through the test vehicle's electronic control unit (ECU) and recorded for use in data reductions. One significant value that is recorded by the WVU emissions measurement system is the ECU engine power output. Theses values are recorded and used to report vehicle's brake specific emissions values over a prescribed open-road test route. Because of the fact that the …
Influence Of A Thermal Denuder On Diesel Exhaust Particle Size Distributions, Bobby John
Influence Of A Thermal Denuder On Diesel Exhaust Particle Size Distributions, Bobby John
Graduate Theses, Dissertations, and Problem Reports
Particle size distributions in diesel exhaust were studied using a thermal desorption technique to determine the volatile and non-volatile fractions. A thermal denuder was designed and characterized for optimal operating parameters and its influence on the exhaust chemistries studied using diesel engine exhaust. The study was conducted on a 1992 DDC Series 60 engine mounted on a heavy-duty direct current dynamometer and exercised over steady state and transient cycles. The particle size distributions were recorded upstream and downstream of the denuder maintained at different temperatures to determine the behavior of the volatile fraction. The volatilization technique was also applied to …
Development Of A Heavy Duty Diesel Vehicle Emissions Inventory Prediction Methodology, Prakash Gajendran
Development Of A Heavy Duty Diesel Vehicle Emissions Inventory Prediction Methodology, Prakash Gajendran
Graduate Theses, Dissertations, and Problem Reports
Emissions from heavy-duty diesel vehicles are known to contribute a substantial fraction of the oxides of nitrogen (NOx), and particulate matter (PM) to the atmospheric inventory. Prediction of heavy-duty diesel vehicle emissions inventory is substantially less mature than the prediction of gasoline car emissions.;Heavy-duty truck emissions are affected by various parameters like vehicle weight/load, driving schedule used, and injection timing control strategies employed to operate the engine at more fuel-efficient (but higher NO x) mode.;Research has revealed a variety of options for inventory prediction, including the use of emissions factors based upon instantaneous engine power and instantaneous vehicle behavior. Effects …
Linear Engine Development For Series Hybrid Electric Vehicles, Csaba Toth-Nagy
Linear Engine Development For Series Hybrid Electric Vehicles, Csaba Toth-Nagy
Graduate Theses, Dissertations, and Problem Reports
This dissertation argues that diminishing oil reserves, concern over global climate change, and desire to improve ambient air quality all demand the development of environment-friendly personal transportation. In certain applications, series hybrid electric vehicles offer an attractive solution to reducing fuel consumption and emissions. Furthermore, linear engines are emerging as a powerplant suited to series HEV applications. In this dissertation, a linear engine/alternator was considered as the auxiliary power unit of a range extender series hybrid electric vehicle. A prototype linear engine/alternator was developed, constructed and tested at West Virginia University. The engine was a 2-stroke, 2-cylinder, dual piston, direct …
Reduction Of Natural Gas Engine Emissions Using A Novel Aftertreatment System, Timothy S. Burlingame
Reduction Of Natural Gas Engine Emissions Using A Novel Aftertreatment System, Timothy S. Burlingame
Graduate Theses, Dissertations, and Problem Reports
The global objective of this study was to develop an exhaust aftertreatment system to reduce gaseous and particulate matter emissions from natural gas fueled vehicles. Specific objectives of this study were to evaluate and characterize emissions from a natural gas fueled vehicle powered by a Cummins C8.3G+ engine with and without the particulate matter (PM) filter and oxidation catalyst (OC) combination, which was designed and developed by West Virginia University in collaboration with Lubrizol-ECS. Central Business District (CBD) Cycle tests were performed on West Virginia University's Transportable Emissions Testing Laboratory. A heavy-duty transportable chassis dynamometer and a dedicated "clean" dilution …
Repeatability Of On-Road Routes And A Comparison Of On-Road Routes To The Federal Test Procedure, J. Axel Radermacher
Repeatability Of On-Road Routes And A Comparison Of On-Road Routes To The Federal Test Procedure, J. Axel Radermacher
Graduate Theses, Dissertations, and Problem Reports
West Virginia University has developed a Mobile Emissions Measurement System that recorded vehicle, engine, and exhaust behavior during in-use testing. This system obtained data from numerous vehicles over specified on-road routes. A study was conducted on on-road route repeatability. A methodology for finding repeatability had to be established, and factors influencing repeatability were identified. It was found that routes and drivers significantly influenced repeatability, and that further study of a larger sample group needs to be conducted before specific conclusions could be drawn about the influences of the vehicle on repeatability.;A further study was conducted on how well the on-road …
Characterization Of Exhaust Emissions From Catalyzed Trap-Equipped Non-Road Heavy-Duty Diesel Engines, Vinay Nagendran
Characterization Of Exhaust Emissions From Catalyzed Trap-Equipped Non-Road Heavy-Duty Diesel Engines, Vinay Nagendran
Graduate Theses, Dissertations, and Problem Reports
An emissions and engine performance study was conducted to explore the effects of ultra low sulfur fuels on an off-road, heavy-duty engine retrofitted with catalyzed traps. The study was conducted, on an 8 cylinder, mechanically controlled Caterpillar 3408, rear engine of a Scraper. An in-field transient duty cycle was determined by logging the engine speed and torque using an Electronic Control Unit (ECU) communication adapter on the Scraper. The test fuels included California Air Resources Board (CARB) off-road diesel fuel, Fischer-Tropsch and Emission Control Diesel-1 (ECD1) diesel fuels. The engine was retrofit with two different types of diesel particulate filters …
Comparison Of Heavy-Duty Diesel Engine Emissions Between An On-Road Route And Engine Dynamometer Simulated On-Road Cycle, John Curtis Gibble
Comparison Of Heavy-Duty Diesel Engine Emissions Between An On-Road Route And Engine Dynamometer Simulated On-Road Cycle, John Curtis Gibble
Graduate Theses, Dissertations, and Problem Reports
Heavy-duty diesel engines are known to emit concentrations of harmful compounds of oxides of nitrogen (NOx) and particulate matter (PM). As a means of emissions control, engine dynamometer certification is currently employed. Current certification cycles provide for standardized comparisons, but may not be indicative of real-world emissions. Accurate in-use emissions testing would provide more realistic engine emissions values.;To examine the accuracy of the West Virginia University Mobile Emissions Measurement System (MEMS), on-road emissions tests were performed with six different diesel-powered vehicles. Exhaust species measured by MEMS were NO x and CO2, reported on a brake-specific basis. Information obtained during on-road …
Investigation Into The Use Of A Tapered Element Oscillating Microbalance For Real-Time Particulate Measurement, Marcus Gilbert
Investigation Into The Use Of A Tapered Element Oscillating Microbalance For Real-Time Particulate Measurement, Marcus Gilbert
Graduate Theses, Dissertations, and Problem Reports
Characterizing particulate matter (PM) in diesel exhaust emissions during transient test cycles has been a challenge for researchers. Acquisition of real-time PM data was proposed by the use of a Rupprecht and Patashnick Co., Inc. Series 1105 Diesel Particulate Monitor Tapered Element Oscillating Microbalance (TEOM) mass measuring device. The objectives of testing with a TEOM diesel particulate analyzer were to validate its collection capability and evaluate its real-time characteristics on transient test cycles. Conventional PM filtration was used as the base line for evaluating the TEOM collection capability. To evaluate real-time TEOM characteristics, the real-time mass rate data were separated …
Evaluation Of Regulated Emissions From Heavy-Duty Diesel Vehicles In The South Coast Air Basin, Thomas M. Buffamonte
Evaluation Of Regulated Emissions From Heavy-Duty Diesel Vehicles In The South Coast Air Basin, Thomas M. Buffamonte
Graduate Theses, Dissertations, and Problem Reports
It is important to know how heavy-duty diesel vehicles affect the air quality in the United States. Twenty-five heavy-duty diesel vehicles in the CRC E55/59 Phase I study were tested on the Urban Dynamometer Driving Schedule (UDDS), AC50/80 and the Heavy Heavy-Duty Diesel Truck (HHDDT) Schedule using the West Virginia University Transportable Emissions Laboratory (TransLab). Every vehicle in the CRC E55/59 Phase I study was tested at 30,000 lbs. (Unladen) and 56,000 lbs. (Laden) on the HHDDT, except for one tanker truck that was tested at 45,000 lbs (Laden). Also, the first thirteen vehicles in the study were tested on …
Numerical Simulation For Parametric Study Of A Two -Stroke Compression Ignition Direct Injection Linear Engine, Ehab F. Shoukry
Numerical Simulation For Parametric Study Of A Two -Stroke Compression Ignition Direct Injection Linear Engine, Ehab F. Shoukry
Graduate Theses, Dissertations, and Problem Reports
A time based numerical simulation program was built at West Virginia University to simulate the operation of a two-stroke compression ignition direct injection linear engine. The two-stroke linear engine consists of two pistons connected together with a yoke and allowed to move freely according to the frequent combustion that takes place in response to fueling and load applied along the full stroke of the internal combustion engine. The simulating program used a series of dynamic and thermodynamic equations that were solved simultaneously to predict the performance and analyze the different factors affecting the operation of the two-stroke compression ignition linear …
Design And Analysis Of A Modified Power-Split Continuously Variable Transmission, Andrew John Fox
Design And Analysis Of A Modified Power-Split Continuously Variable Transmission, Andrew John Fox
Graduate Theses, Dissertations, and Problem Reports
The CVT has advantages over the conventional stepped ratio transmission because of its smooth, stepless shifting, simplified design, and a potential for reduced fuel consumption and tailpipe emissions. The power split CVPST has a potentially higher mechanical efficiency than a conventional shaft-to-shaft CVT, but it is unknown whether that efficiency can be improved. For the CVPST, the branch control circuit that contains the CVT can be disengaged at the ring gear for a 1:1 overall transmission ratio, which will interrupt the power flow through the CVT. This could increase overall efficiency because the branch control circuit is no longer transmitting …
Study Of Natural Gas Vehicles (Ngv) During The Fast Fill Process, Eric Paul Shipley
Study Of Natural Gas Vehicles (Ngv) During The Fast Fill Process, Eric Paul Shipley
Graduate Theses, Dissertations, and Problem Reports
Natural gas is being used as an alternative fuel to gasoline. Natural gas vehicle (NGV) refueling stations, however, are not able to guarantee a 100% full fill to NGV's. A system was designed and built to better understand the characteristics of CNG during the fill process. Useful characteristics of CNG during the fill process are temperature, pressure, and flow rate, as well as, total volume dispensed. CNG is dispensed to an NGV through a process known as the fast fill process, since it is completed in less than five minutes. The system that was built is transportable, which means that …
Nucleation And Coagulation Of Particulate Matter Inside A Turbulent Exhaust Plume Of A Diesel Vehicle, Donghee Kim
Nucleation And Coagulation Of Particulate Matter Inside A Turbulent Exhaust Plume Of A Diesel Vehicle, Donghee Kim
Graduate Theses, Dissertations, and Problem Reports
The objective of this study is to develop a physical model to accurately predict the nucleation, coagulation, and dynamics of particulate matter emission from diesel-fueled engines. The uniqueness of this research is that measured particulate matter (PM) size distribution data is not required a priori to solve the nucleation/coagulation equations; instead the PM concentration is predicted based on the fuel sulfur content, fuel to air ratio, exhaust flow rate, and the ambient conditions. This study presents the CFD modeling of an exhaust plume dispersed from a stack pipe of a tractor truck powered by a 330 HP diesel engine. This …
Combustion Analysis And Particulate Mutagenicity Characterization For A Single-Cylinder Diesel Engine Fueled By Fischer -Tropsch Derived Liquids, Michael Hayden Mcmillian
Combustion Analysis And Particulate Mutagenicity Characterization For A Single-Cylinder Diesel Engine Fueled By Fischer -Tropsch Derived Liquids, Michael Hayden Mcmillian
Graduate Theses, Dissertations, and Problem Reports
Further growth of diesel engines in the light-duty and heavy-duty vehicular markets is closely linked to the potential health risks of diesel exhaust. Cleaner burning fuels, such as those derived from natural gas via the Fischer-Tropsch (FT) process, offer a potentially economically viable alternative to standard diesel fuel. As part of this study, a two-liter, single-cylinder, four-stroke direct-injected engine was instrumented for in-cylinder pressure measurements. The emissions and performance data from engine operation with Federal low sulfur No. 2 diesel fuel (DF) and natural gas derived FT fuel were compared. Also as part of the study, an investigation was carried …
Lda And Cta In-Cylinder Measurements Of Intake-Generated Turbulence For Steady Flow Around A Centrally Located Valve, Gearle Ray Bailey Jr.
Lda And Cta In-Cylinder Measurements Of Intake-Generated Turbulence For Steady Flow Around A Centrally Located Valve, Gearle Ray Bailey Jr.
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was to measure the axial and swirl velocities for steady flow in a cylinder past an intake valve, in order to study the effects of swirl and valve lift on turbulence generation. A simple geometry was used for an initial look at the flow past a valve.;A cylinder with a centrally located valve was used as the test bed. The valve was tested at lifts of 4 and 9 mm Two intake geometries were tested: a straight intake port and a swirl intake port. A single sensor Constant Temperature Anemometry (CTA) and a one-component Laser …
Simulation Of Heavy-Duty Hybrid Electric Vehicles, Anjali Devi Nennelli
Simulation Of Heavy-Duty Hybrid Electric Vehicles, Anjali Devi Nennelli
Graduate Theses, Dissertations, and Problem Reports
Microsoft Excel and ADvanced VehIcle SimulatOR (ADVISOR) were used to simulate the driving conditions of heavy-duty hybrid electric vehicles over various driving cycles in an attempt to optimize their design and control. The fuel economy data thus obtained were compared with those of the in-use heavy-duty hybrid electric vehicles. For this the drive cycles are modified to represent realistic expectations of the dynamic performance of vehicles. The cycles used are "Central Business District" cycle (CBD), "Urban Dynamometer Driving Schedule" cycle (UDDS), "Manhattan" cycle and "City Suburban Heavy Vehicle Cycle" (CSHVC). The vehicle considered for simulations was a transit bus, which …
Real World Heavy-Duty Vehicle Emissions Modeling, Paul Andrei
Real World Heavy-Duty Vehicle Emissions Modeling, Paul Andrei
Graduate Theses, Dissertations, and Problem Reports
Heavy-duty vehicle emissions represent a significant portion of the mobile source emissions inventory. Accurate estimation of their contribution is essential as on-highway and non-road heavy-duty diesel emissions account for at least one third of the oxides of nitrogen (NOx) in the inventory. West Virginia University (WVU) has developed an extensive database of continuous transient gaseous emissions levels from a wide variety of heavy-duty vehicles in field operation. The database was built using WVU Transportable Heavy-Duty Vehicle Emissions Testing Laboratories (THDVETL). Several different transient cycles were utilized for testing including the Central Business District (CBD) schedule.;Several speed correction factors were developed …
Analysis Of Particulate Matter Concentration And Size Distribution In Heavy-Duty Vehicle Exhaust Emissions, Zhuyun Xu
Graduate Theses, Dissertations, and Problem Reports
This study put forward a method to predict the concentration field in the plume of a heavy-duty truck, operating at highway speed. It provided information regarding computation of dispersion coefficients in the area near a stack.;The numerical cumulative frequency fit method obtained in this study provided an effective and quick means for determining the particle size distribution parameters (the mass median aerodynamic diameters and geometric standard deviations) of sample data for the multi-modal distribution.;The particle size distribution of the compressed natural gas buses tested was characterized by a bi-modal particle size distribution; the clean diesel buses had a uni-modal particle …
Characterization Of Infield Vehicle Activity Data And Exhaust Emissions From Diesel Powered Off-Road Vehicles, Ryan Andrew Barnett
Characterization Of Infield Vehicle Activity Data And Exhaust Emissions From Diesel Powered Off-Road Vehicles, Ryan Andrew Barnett
Graduate Theses, Dissertations, and Problem Reports
A study was conducted to determine brake-specific emissions from diesel-powered off-highway heavy equipment that were exercised on steady-state and transient cycles. Two vehicles were evaluated in this study, a streetsweeper (114 hp) and a rubber-tired loader (110 hp). Due to the lack of appropriate transient cycles available for these vehicles, methods were developed to document infield operation for the creation of test cycles and strategies. These cycles were later used to mimic infield operation for the collection of emissions and performance data on a dynamometer test bed.;Brake-specific emissions data collected during the transient cycles was compared to data collected during …
Design And Simulation Of High-Performance Hybrid Electric Vehicle Powertrains, Samuel P. Taylor
Design And Simulation Of High-Performance Hybrid Electric Vehicle Powertrains, Samuel P. Taylor
Graduate Theses, Dissertations, and Problem Reports
The intent of this study was the design, modeling, and simulation of several high-performance light-duty hybrid electric vehicle powertrains. The design requirements of each proposed configuration are to meet or exceed a set of performance baselines based on a composite set of particular high-performance conventional vehicles presently available, while demonstrating increased fuel efficiency over regulated government cycles.;Several hybrid powertrain configurations were studied; however, the most promising and feasible for production designs were selected for further modeling. All of the proposed designs are post-transmission parallel hybrids for primarily performance reasons, with the auxiliary motive power coming after the transmission, utilizing a …
Optimum Hybrid Vehicle Configurations For Heavy Duty Applications, Jonathan Burke Smith
Optimum Hybrid Vehicle Configurations For Heavy Duty Applications, Jonathan Burke Smith
Graduate Theses, Dissertations, and Problem Reports
Increased concern about the fuel economy of and emissions from automobiles has led to interest in the use of hybrid electric powertrains and the introduction of several production vehicles in both heavy-duty and light-duty applications. Hybrid electric vehicles (HEVs) use a combination of electric motor(s) and another power source such as an internal combustion engine (ICE) or fuel cell. While these vehicles show great potential for use in a wide variety of driving situations, the optimization of components and control strategies is quite complex.;In this thesis, Class 2B, Class 6, and Class 8 vehicles are determined by averaging a variety …
Investigation And Simulation Of The Planetary Combination Hybrid Electric Vehicle, Csaba Toth-Nagy
Investigation And Simulation Of The Planetary Combination Hybrid Electric Vehicle, Csaba Toth-Nagy
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was the detailed examination of a Planetary Combination Hybrid Electric Vehicle design (PC-Hybrid). The PC-Hybrid unites all the advantages of the existing hybrid electric vehicle powertrain concepts, such as series, parallel and combination, while eliminating the disadvantages of each.;The PC-Hybrid powertrain is built up of an internal combustion engine, and two electric motor/alternators connected together via a planetary gear set. Several different powertrain configuration layouts were investigated as possible setups of the PC-Hybrid and the two most promising ones were chosen for further investigation and simulation. A control strategy has been developed for the optimal …
Evaluation Of Opacity, Particulate Matter, And Carbon Monoxide From Heavy-Duty Diesel Transient Chassis Tests, Ronald Page Jarrett
Evaluation Of Opacity, Particulate Matter, And Carbon Monoxide From Heavy-Duty Diesel Transient Chassis Tests, Ronald Page Jarrett
Graduate Theses, Dissertations, and Problem Reports
Opacity and emission data were collected from heavy-duty diesel engines exercised through snap-acceleration tests and transient chassis dynamometer tests. Emission data were gathered using the West Virginia University (WVU) Transportable Heavy Duty Vehicle Emission Testing Laboratories (THDVETL) and opacity data were collected from two opacity meters; the Wager 650CP full flow opacity meter and the Bosch RT 100 partial flow opacimeter. Results showed that the Bosch peak opacity readings were consistently higher than the Wager peak opacity readings, and both meters showed little correlation with filter-captured particulate matter (PM). It was also observed that the snap-acceleration test did not identify …
Emissions Testing Of Two Recreational Marine Engines With Water Contact In The Exhaust Stream, Brian E. Mace
Emissions Testing Of Two Recreational Marine Engines With Water Contact In The Exhaust Stream, Brian E. Mace
Graduate Theses, Dissertations, and Problem Reports
Recreational marine engine operation effects water quality as well as air quality. Significant quantities of hydrocarbons are discharged into the rivers, lakes, and estuaries used as recreational boating waters. In order to investigate the impact of recreational marine engine operation on water quality, a MerCruiser 3.0LX four-cylinder four-stroke inboard engine and a Mercury 650 two-cylinder two-stroke outboard engine were tested using EPA required certification procedures. Both engines were tested with exhaust gas/cooling water mixing (scrubbing) in the exhaust stream using both freshwater and saltwater. Additionally, the inboard engine was tested without exhaust scrubbing. Gaseous emissions (HC, NOx, CO, and CO2) …
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 …