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One high-efficiency combustion concept under investigation is gasoline compression ignition (GCI)—the use of gasoline-like fuels to deliver very low NO x and PM emissions as well as high efficiency in a diesel compression ignition engine. direct-injection light-duty diesel engine. Earlier post.) —Adams et al.
In a presentation at the SAE 2014 High Efficiency IC Engine Symposium and then in a paper given at SAE 2014 World Congress, Mark Sellnau, Engineering Manager, Delphi Advanced Powertrain, reported that Brake Specific Fuel Consumption for the 1.8L Earlier post , earlier post.). Background. Earlier post.)
A team from the University of Wisconsin and General Motors has found that high-speed gasoline direct injection compression ignition (GDICI) operation in the low temperature combustion (LTC) regime in a light-duty diesel engine is feasible. On the contrary, gasoline fuels have CN lower than 30 (or RON higher than 60).
Researchers at the University of WisconsinEngine Research Center ( ERC ) led by Dr. Rolf Reitz are developing a dual-fuel compression-ignition engine low-temperature combustion (LTC) strategy called reactivity controlled compression ignition (RCCI) ( Earlier post.) Improving RCCI results in a light-duty engine.
Hydrogen Engine Center, Inc. HEC) and Wisconsin Motors (WM) have signed an agreement to form Oxx Power Continental, a joint venture, to produce a wet-sleeve version of the Oxx Power 4.9L six-cylinder engine. The new engine will replace both the Ford F300 and the Oxx Power 4.9L engines in the industrial market.
A team at the University of Madison-Wisconsin studied critical sooting equivalence ratios and subsequent particulate formation during spark-ignition combustion for blends of ethanol, isobutanol (2-methyl-1-propanol), and methylbutenol (2-methyl-3-buten-2-ol) with gasoline using premixed prevaporized (PMPV) fueling.
In a paper presented at the 2013 SAE World Congress, a team from the University of Wisconsin reported a gross indicated thermal efficiency of Reactivity Controlled Compression Ignition (RCCI) operation of near 60%, given optimized combustion management and thermodynamic conditions. bar IMEP an engine speed of 1,300 rpm. RCCI basics.
Researchers at the University of Wisconsin, led by Dr. Rolf Reitz, are investigating a blended dual-fuel (gasoline and diesel) concept to extend the operating range of partially premixed charge compression ignition combustion by using the varying fuel reactivity of the charge blend, which is determined in real time. Source: Rolf Reitz.
Researchers at the University of Wisconsin-Madison have investigated blending the benefits of reactivity controlled compression ignition (RCCI) and gasoline compression ignition (GCI) using QuantLogic’s novel adaptive dual-fuel injector which is capable of direct injecting both gasoline and diesel fuel in a single cycle.
SAE’s 2012 High Efficiency IC Engine Symposium in Detroit—the second as an immediate precursor to the SAE World Congress—opened on Sunday with a consideration of several alternative engine designs: opposed piston 2-stroke (Achates Power); variable compression ratio (MCE-5); split cycle (Scuderi); and advanced rotary (Liquid Piston).
Other fuels that play a role in commercial trucking include gasoline (23%) and compressed natural gas (0.4%). For gasoline vehicles that make up about a quarter of all commercial trucks (Class 3-8), more than half (57.5%) of those in operation are 2007 and newer model years. Electric and other categories each register less than 1%.
Researchers in China have generated gasoline fuel with a research octane number of 95.4 valerolactone (GVL)—the highest octane number reported for biomass-derived gasoline fuel—using an ionic liquid catalyst. The obtained gasoline was rich in trimethylpentane (isooctane), with the RON of 95.4. from biomass-derived ?-valerolactone
The University of Wisconsin-Madison Hybrid Vehicle Team will work with the UW-Madison Engine Research Center to test implementations of Reactivity Controlled Compression Ignition (RCCI) engines being developed by UW mechanical engineering professor Rolf Reitz and his colleagues. Earlier post.). —Glenn Bower.
A research team at the University of Wisconsin–Madison has identified a new way to convert ammonia to nitrogen gas through a process that could be a step toward ammonia replacing carbon-based fuels. Ammonia has been burned as a fuel source for many years. However, burning ammonia releases toxic nitrogen oxide gases.
Researchers at the University of Wisconsin led by Dr. Rolf Reitz are developing a dual-fuel compression engine combustion strategy called reactivity controlled compression ignition (RCCI) to simultaneously reduce fuel consumption and regulated emissions of NO x and PM. Earlier post.).
Researchers from the University of Wisconsin-Madison and General Motors have extended the operation range for a light-duty diesel engine operating on gasoline using extended controllability of the injection process via a triple-pulse injection strategy. Earlier post.).
Virent’s BioForming platform can produce drop-in gasoline, diesel or jet fuels from plant sugars. Virent has taken another step in the gasoline certification process, successfully completing its first road fleet test organized and executed by Virent collaborator and investor Royal Dutch Shell. Source: Virent. Click to enlarge.
Gautam Kalghatgi and his colleagues at Saudi Aramco provides further support a pathway for significant improvements in the efficiency of a gasolineengine (i.e., Broadly, this approach is termed Gasoline Compression Ignition (GCI). spark ignited, SI) by running it in compression ignition mode with naphtha fuels. Earlier post.)
Researchers at the University of Wisconsin-Madison have used computational fluid dynamics modeling to investigate cycle-to-cycle instability of homogeneous charge compression ignition (HCCI) and reactivity-controlled compression ignition (RCCI) engines—two approaches to low-temperature combustion.
A key strategy for achieving the project goals will be a pioneering low-temperature gasoline combustion system that could help significantly improve light-duty vehicle fuel economy. Delphi is an industry leader in advanced powertrain technology development, with new gasoline direct injection (GDi) systems soon entering production.
Preliminary results from a new study by a team from Oak Ridge National Laboratory (ORNL) and the University of Wisconsin suggest that the fuel properties of moderate biofuel blends such as E20 and B20 increase the benefits of the use of Reactivity Controlled Compression Ignition (RCCI). Earlier post.). —Hanson et al.
Martin Wissink from the team presented a paper on the work at the ASME 2012 Internal Combustion Engine Division Fall Technical Conference in Vancouver, BC, this week. CR Gasoline, in which gasoline was injected through the higher-pressure common rail injector, allowing for much later injections of large quantities of gasoline.
Researchers at the University of Wisconsin–Madison led by James Dumesic have developed a catalytic process to convert cellulose into liquid hydrocarbon fuels (diesel and gasoline), using a cascade strategy to achieve the progressive removal of oxygen from biomass, allowing the control of reactivity and facilitating the separation of products.
Achates Power, the developer of a family of two-stroke compression-ignition opposed-piston engines ( earlier post ), has been selected by APRA-E under its OPEN 2015 solicitation ( earlier post ) for an award of more than $9 million to develop a multi-cylinder opposed piston engine operating with compression ignition that uses gasoline as the fuel.
Researchers at the University of Wisconsin, led by Dr. James Dumesic, have developed a process to convert aqueous solutions of ?-valerolactone GVL retains 97% of the energy content of glucose and performs comparably to ethanol when used as a blending agent (10% v/v) in conventional gasoline. Credit: Bond et al., Click to enlarge.
The study was conducted by the University of California Riverside and the University of Wisconsin, Madison and commissioned by the Urban Air Initiative. The fact that simply adding more ethanol to gasoline can reduce emissions and improve public health is a story that every driver needs to hear. Jiacheng Yang, Patrick Roth, Thomas D.
are electric, and the remainder are gasoline or other fuels. are powered by diesel, gasoline (22.9%), compressed natural gas (0.46%), other (ethanol, fuel cell, LNG, propane, 0.85%) and electric (0.09%). Nationwide, for every electric commercial truck on the road, there are nearly 1,100 powered by internal combustion engines.
James Liao of UCLA, has for the first time produced isobutanol—an alcohol that is more attractive for transportation use than ethanol—directly from cellulose using a genetically engineered microbe. Plus, it may be possible to use isobutanol directly in current engines without modification. Earlier post.) —James Liao.
Of the $71 million, Achates Power will receive $5 million for work on an opposed-piston 2-stroke hybrid commercial vehicle system, and Cummins will receive $4 million for its work on an ultra-low emissions heavy-duty 10L natural gas engine. AOI 5: Natural Gas Engine Enabling Technologies. University of Wisconsin- Madison.
Among their findings was that E20 offers higher peak load capability and thermal efficiency than gasoline. Among their findings was that E20 offers higher peak load capability and thermal efficiency than gasoline.
and Shell have successfully started production at the first demonstration plant converting plant sugars into gasoline and gasoline blend components, rather than ethanol. The demonstration plant has the capacity to produce up to 38,000 liters (10,000 gallons US) per year, which will be used for engine and fleet testing.
The plant was constructed at the company’s facility in Madison, Wisconsin under a $1.5-million Design, engineering and construction were performed in-house by Virent employees. Its Madison facility also houses a 10,000 gallon per year system that is optimized to produce gasoline and aromatic chemicals.
They are compatible with existing recreational boats, requiring no changes to fuel systems or engines. Since 2000, emissions from marine engines have decreased more than 90% and fuel efficiency has increased more than 40%. biobutanol and gasoline that reduces CO 2 emissions by up to 30% relative to conventional fossil‐based gasoline.
Of them, the Great Lakes Bioenergy Research Center ( GLBRC ), led by the University of Wisconsin–Madison, had a goal of turning more of the corn plant—the stalk and leaves that makes up the stover—into ethanol, while developing perennial plants like switchgrass and miscanthus (also called silvergrass) into potential feedstocks.
Achates Power, the developer of a two-stroke, compression-ignition (CI) opposed-piston opposed-cylinder (OPOC) engine ( earlier post ) is now “concept-ready”, David Johnson, Achates Power CEO, told GCC in an interview at SAE 2011 World Congress in Detroit. The Achates engine. —Johnson et al.
A team at the Engine Research Center (ERC), University of Wisconsin-Madison has demonstrated the viability of reactivity-controlled compression ignition (RCCI) in a two-stroke engine. A paper on their work is published in Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering.
In five years of operation, the Centers have produced more than 1,100 peer-reviewed publications and more than 400 invention disclosures and/or patent applications.
Researchers at the US Department of Energy’s (DOE’s) BioEnergy Science Center (BESC) have engineered a microbe that improves isobutanol yields from cellulose by a factor of 10. —co-author James Liao, UCLA Henry Samueli School of Engineering and Applied Science. Metabolic engineering for isobutanol production in C.
Representation of the limited operating range of robust HCCI operation in a conventional 4-stroke SI engine. Broadening LTHR and HTHR, and reducing the maximum rate of pressure increase during LTHR and HTHR, increases the operating range of a HCCI engine. The team explored the configurations in a single-cylinder four-stroke engine.
The research projects will contribute to the development of high efficiency internal combustion engines with the goals of improving fuel economies by 20-40% in light-duty vehicles and attaining 55% brake thermal efficiency in heavy-duty engine systems. Tags: Engines Fuel Cells.
A team of researchers led by James Dumesic and George Huber, both now at the University of Wisconsin-Madison, have demonstrated how C 5 sugars derived from hemicellulose can be converted into a high-quality petroleum refinery feedstock via a four-step catalytic process. Source: Olcay et al. Click to enlarge.
Researchers from the University of Wisconsin Madison and ExxonMobil Research and Engineering have devised a two-stage process by which an alcohol such as ethanol or 1-butanol can be converted with high yields into distillate-range ethers and olefins by combining Guerbet coupling (the coupling of two alcohol molecules) and intermolecular dehydration.
and Utility Equipment Leasing Corporation (UELC), and relocated to a production facility in Waukesha, Wisconsin. Once stationary at the job site, work trucks are able to operate worksite equipment applications for up to several hours without using engine power, depending upon the application. Earlier post.).
A team from the University of Wisconsin-Madison, University of Massachusetts-Amherst and Gwangju Institute of Science and Technology of South Korea has demonstrated the feasibility of using proton-exchange-membrane (PEM) reactors electrocatalytically to reduce biomass-derived oxygenates into renewable fuels and chemicals.
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