Search Results - "CLARK, Nigel N"

Parametric Investigation of Combustion and Heat Transfer Characteristics of Oscillating Linear Engine Alternator by Famouri, Parviz, Robinson, Matthew C., Clark, Nigel N., Bade, Mehar

“…An Oscillating Linear Engine Alternator (OLEA) has the potential to overcome the thermal, mechanical, and combustion inadequacies encountered by the…”
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Investigation into pedestrian exposure to near-vehicle exhaust emissions by Buzzard, Neil A, Clark, Nigel N, Guffey, Steven E

“…Inhalation of diesel particulate matter (DPM) is known to have a negative impact on human health. Consequently, there are regulations and standards that limit…”
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Methane Emissions from Leak and Loss Audits of Natural Gas Compressor Stations and Storage Facilities by Johnson, Derek R, Covington, April N, Clark, Nigel N

“…As part of the Environmental Defense Fund’s Barnett Coordinated Campaign, researchers completed leak and loss audits for methane emissions at three natural gas…”
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Near-Field Characterization of Methane Emission Variability from a Compressor Station Using a Model Aircraft by Nathan, Brian J, Golston, Levi M, O’Brien, Anthony S, Ross, Kevin, Harrison, William A, Tao, Lei, Lary, David J, Johnson, Derek R, Covington, April N, Clark, Nigel N, Zondlo, Mark A

“…A model aircraft equipped with a custom laser-based, open-path methane sensor was deployed around a natural gas compressor station to quantify the methane leak…”
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Pump-to-Wheels Methane Emissions from the Heavy-Duty Transportation Sector by Clark, Nigel N, McKain, David L, Johnson, Derek R, Wayne, W. Scott, Li, Hailin, Akkerman, Vyacheslav, Sandoval, Cesar, Covington, April N, Mongold, Ronald A, Hailer, John T, Ugarte, Orlando J

“…Pump-to-wheels (PTW) methane emissions from the heavy-duty (HD) transportation sector, which have climate change implications, are poorly documented. In this…”
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Quantification of gasoline-ethanol blend emissions effects by Clark, Nigel N., McKain, David L., Klein, Tammy, Higgins, Terence S.

“…Emissions levels from current gasoline spark-ignited engines are low, and emissions changes associated with the blending of ethanol into gasoline are small and…”
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An optimization method for flexural bearing design for high-stroke high-frequency applications by Meymian, Nima Zamani, Clark, Nigel N., Musho, Terence, Darzi, Mahdi, Johnson, Derek, Famouri, Parviz

“…•The percent of flexure’s moving mass is in the range of 29–31%.•Spiral length and diameter are the first two most significant design parameters.•Thickness and…”
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A Comparison of Emissions and Fuel Economy from Hybrid-Electric and Conventional-Drive Transit Buses by Wayne, W. Scott, Clark, Nigel N, Nine, Ralph D, Elefante, Dennis

“…Hybrid-electric transit buses offer potential benefits over conventional transit buses of comparable capacity, including reduced fuel consumption, reduced…”
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Effect of Combustion Timing and Heat Loss on Spring-Assisted Linear Engine Translator Motion by Robinson, Matthew C., Clark, Nigel N.

“…The free piston linear engine has the potential to achieve high efficiency and might serve as a viable platform for robust implementation of low temperature…”
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Future methane emissions from the heavy-duty natural gas transportation sector for stasis, high, medium, and low scenarios in 2035 by Clark, Nigel N., Johnson, Derek R., McKain, David L., Wayne, W. Scott, Li, Hailin, Rudek, Joseph, Mongold, Ronald A., Sandoval, Cesar, Covington, April N., Hailer, John T.

“…Today's heavy-duty natural gas-fueled fleet is estimated to represent less than 2% of the total fleet. However, over the next couple of decades, predictions…”
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Resonance of a Spring Opposed Free Piston Engine Device by Robinson, Matthew C., Clark, Nigel N., Famouri, Parviz

“…Recent free piston engine research reported in the literature has included development efforts for single and dual cylinder devices through both simulation and…”
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Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions by Johnson, Derek R, Covington, April N, Clark, Nigel N

“…The use of natural gas continues to grow with increased discovery and production of unconventional shale resources. At the same time, the natural gas industry…”
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Modeling Transit Bus Fuel Consumption on the Basis of Cycle Properties by Delgado, Oscar F., Clark, Nigel N., Thompson, Gregory J.

“…A method exists to predict heavy-duty vehicle fuel economy and emissions over an "unseen" cycle or during unseen on-road activity on the basis of fuel…”
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Development of molecular marker source profiles for emissions from On-road gasoline and diesel vehicle fleets by LOUGH, Glynis C, CHRISTENSEN, Charles G, SCHAUER, James J, TORTORELLI, James, MANI, Erin, LAWSON, Douglas R, CLARK, Nigel N, GABELE, Peter A

“…As part of the Gasoline/Diesel PM Split Study, relatively large fleets of gasoline vehicles and diesel vehicles were tested on a chassis dynamometer to develop…”
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Variations in Speciated Emissions from Spark-Ignition and Compression-Ignition Motor Vehicles in California's South Coast Air Basin by Fujita, Eric M., Zielinska, Barbara, Campbell, David E., Arnott, W. Patrick, Sagebiel, John C., Mazzoleni, Lynn, Chow, Judith C., Gabele, Peter A., Crews, William, Snow, Richard, Clark, Nigel N., Wayne, Scott W., Lawson, Douglas R.

“…The U.S. Department of Energy Gasoline/Diesel PM Split Study examined the sources of uncertainties in using an organic compound-based chemical mass balance…”
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Crankcase Particulate Emissions from Diesel Engines by Tatli, Emre, Clark, Nigel N

“…In 2007, US EPA implemented the rule that the crankcase emissions be added to the tailpipe emissions to determine the total emissions from a diesel engine if…”
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Expressing Cycles and Their Emissions on the Basis of Properties and Results from Other Cycles by Clark, Nigel N, Vora, Kuntal A, Wang, Lijuan, Gautam, Mridul, Wayne, W. Scott, Thompson, Gregory J

“…A method is proposed to predict vehicle emissions over a driving cycle on the basis of the vehicle’s emissions measured over other driving cycles and the…”
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Idle Emissions from Heavy-Duty Diesel Vehicles: Review and Recent Data by Khan, ABM S., Clark, Nigel N., Thompson, Gregory J., Wayne, W. Scott, Gautam, Mridul, Lyon, Donald W., Hawelti, Daniel

“…Heavy-duty diesel vehicle idling consumes fuel and reduces atmospheric quality, but its restriction cannot simply be proscribed, because cab heat or…”
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Design and Testing of an Independently Controlled Urea SCR Retrofit System for the Reduction of NOx Emissions from Marine Diesels by JOHNSON, Derek R, BEDICK, Clinton R, CLARK, Nigel N, MCKAIN, David L

“…Diesel engine emissions for on-road, stationary and marine applications are regulated in the United States via standards set by the Environmental Protection…”
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Effect of Truck Operating Weight on Heavy-Duty Diesel Emissions by Gajendran, Prakash, Clark, Nigel N

“…Heavy-duty diesel vehicles are substantial contributors of oxides of nitrogen (NO x ) and particulate matter (PM) while carbon monoxide and hydrocarbon (HC)…”
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