Researchers develop effective exhaust catalyst for lower temperature exhaust

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To improve fuel efficiency, advanced combustion engines are being designed to minimize the amount of waste heat in the exhaust. As a result, future generations of exhaust after-treatment catalysts must perform at temperatures that are 100 °C lower than current catalysts. The researchers designed a catalyst that could endure engine exhaust temperatures of up to 800 ˚C encountered under high engine loads.

Continental shows off-road exhaust gas aftertreatment solutions

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At Agritechnica in Hanover, the world’s leading trade fair for agricultural machinery and equipment, Continental is presenting exhaust aftertreatment solutions for agricultural and construction machinery.

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UC Riverside team wins EPA design contest with lawnmower exhaust aftertreatment device

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A team of University of California, Riverside Bourns College of Engineering students have won an EPA student design contest for developing an exhaust aftertreatment device that cuts CO, NO x and PM emissions from lawnmowers.

2014 85

IAV develops new close-coupled diesel exhaust gas aftertreatment system for improved emissions reduction

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IAV has developed a particularly closed-coupled diesel exhaust gas aftertreatment (EAT) system. A key contribution to this performance must come from the exhaust gas aftertreatment system—across the entire speed and load range.

2017 98

Federal-Mogul Powertrain introduces enhanced exhaust insulating sleeves; higher efficiency, lower emissions

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Federal-Mogul Powertrain, a division of Federal-Mogul Holdings Corporation has enhanced its line of ThermFlex exhaust insulating sleeves. ThermFlex can expand to twice its original diameter to accommodate the flanges and bends typically seen on exhaust system components.

2016 95

Rice, Penn State study shows machine learning can improve catalyst design

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Chemical engineers at Rice University and Pennsylvania State University have shown that combining machine learning and quantum chemistry can save time and expense in designing new catalysts.

2018 85

Will exhaust sleeves help to reduce emissions?

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The solution could be an exhaust insulating sleeve (pictured) from Federal-Mogul Corporation. The company has enhanced its Thermflex exhaust sleeves with an optimised design that can now fit any combination of tube geometries and exhaust pipe. It is designed to increase the efficiency [.]. Green cars Latest news exhaust sleeves exhaust systems Federal Mogul green cars

Wärtsilä designing first hybrid propulsion system for fish farming ship

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Wärtsilä has been contracted to deliver the ship design for a new processing and transportation vessel to be built at the Balenciaga shipyard in Spain on behalf of Hav Line AS of Norway.

2017 78

Viable exhaust-driven on-board ethanol reforming for improvements in fuel economy and emissions

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Schematic diagram of the successful “shoebox” reformer design and a picture of the core, after insertion of the catalyst. Many papers have described high-temperature steam reforming of ethanol at around 600 °C but.this temperature is too high to be driven by engine exhaust.

Corning expands light-duty vehicle exhaust filter capacity in Germany

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The new cordierite-based gasoline particulate filter (GPF) product family is designed to enable a range of system configurations as European car makers prepare to meet the new emissions standards. Corning Incorporated has boosted its light-duty vehicle filter capacity at its manufacturing facility in Kaiserslautern, Germany for both gasoline and diesel engined vehicles.

DSM Stanyl ForTii used in exhaust gas recirculation temperature sensors

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Royal DSM says a new generation of automotive exhaust gas recirculation temperature (EGRT) sensors is now being made in its Stanyl ForTii high-temperature performance polyamide 4T. With the appropriate design, Stanyl ForTii can withstand a temperature as high as 325 °C on an intermittent basis and still retain all the mechanical properties required for this very demanding application.

Purdue, Notre Dame, Cummins discovery could lead to new SCR catalyst design for improved NOx control

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Researchers at Purdue University, the University of Notre Dame and Cummins have discovered a new reaction mechanism that could be used to improve SCR catalyst designs for pollution-control systems to further reduce emissions of smog-causing nitrogen oxides in diesel exhaust.

2017 90

Techrules unveils production design of series-hybrid Ren RS with micro-turbine range extender; 330 km/h

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Techrules, a China-based automotive R&D company ( earlier post ) is unveiling the final production design of its Ren RS series-hybrid supercar at the 2018 Geneva Motor Show. Design and aerodynamics. The wing has been designed by L.M.

2018 95

GM details 2016 Chevrolet Malibu Hybrid powertrain design and operation

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The new engine is fitted with an exhaust gas heat recovery (EGHR) system. An integrated exhaust manifold improves packaging, and, in conjunction with the EGHR system and SVCC catalyst, helps to reduce engine warmup time and fuel use during warmup.

2016 85

WHO IARC classifies diesel exhaust as carcinogenic to humans (Group 1)

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After a week-long meeting of an expert working group, the International Agency for Research on Cancer (IARC), which is part of the World Health Organization (WHO), classified diesel engine exhaust (DEE) as carcinogenic to humans (Group 1), based on sufficient evidence that exposure is associated with an increased risk for lung cancer. In 1988, IARC classified diesel exhaust as probably carcinogenic to humans (Group 2A). and reductions in emissions through exhaust control technology.

HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

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The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. This phase started in 2008 with the installation of a specially designed emissions-generation and animal-exposure facility at the Lovelace Respiratory Research Institute (LRRI) and was conducted in two parts.

2015 81

US study of miners links heavy exposure to diesel exhaust to increased risk of lung cancer death; researchers suggest implications for urban areas with high exhaust concentrations

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In a study of non-metal miners in the US, federal government scientists report that heavy exposure to diesel exhaust increased risk of death from lung cancer. According to the investigators, this is the first study based on estimates of quantitative historical exposure to diesel exhaust to yield a statistically significant, positive increase in lung cancer risk with increasing diesel exposure with adjustment for potential confounding from cigarette smoking.

Environment Canada/MECA team assesses black carbon emissions in GDI engine exhaust; evaluation of prototype gasoline particulate filter

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In addition, the inhomogeneity of the fuel mixture under stratified operation in GDI engines during the compression stroke tends to contribute to higher particulate emissions compared to the exhaust emissions from traditional PFI engines.

2014 85

New mixed-oxide catalysts shown as viable substitute for platinum catalysts for diesel exhaust aftertreatment

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Under laboratory-simulated diesel exhaust conditions, this mixed-phase oxide material was superior to Pt in terms of cost, thermal durability, and catalytic activity for NO oxidation. NO conversion versus ramp-up and ramp-down temperatures for MnCe-7:1 (?), SmMn 2 O 5 (?),

GM develops integrated exhaust manifold cylinder head for 3.6L V6 direct injection engine; improvement in performance, fuel economy, emissions and noise

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The reduced complexity of the design of the new integrated exhaust manifold cylinder head ( bottom ) compared to the old ( top ). GM has combined the exhaust manifold with the cylinder head into a single aluminum casting in the 2012 Camaro 3.6L

2011 114

Study identifies combustion-derived nanoparticles in diesel exhaust as the predominant mediator for adverse cardiovascular events

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The research by the University of Edinburgh measured the impact of diesel exhaust fumes on healthy volunteers at levels that would be found in heavily polluted cities. The team compared how people reacted to the gases found in diesel fumes—such as carbon monoxide and nitrogen dioxide—with the ultrafine chemical particles from exhausts. Newby (2011) Combustion-derived nanoparticulate induces the adverse vascular effects of diesel exhaust inhalation.

Borla Performance Industries developing muffler/membrane unit for exhaust water extraction with ORNL nanopore membrane technology

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Borla Performance Industries , a leader in the design and manufacture of stainless steel performance exhaust, has an option to license a novel nanopore membrane technology developed at Oak Ridge National Laboratory (ORNL). Borla will combine this with its diesel exhaust technology to create a low-cost, novel system that doubles as a device to extract potable water from diesel and other internal combustion exhaust.

Water 65

New Tester Measures Urea Concentration in Diesel Exhaust Fluids

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The MISCO Palm Abbe DEF-201 is a handheld digital refractometer designed specifically for testing the concentration of urea-based Diesel Exhaust Fluid (DEF). Diesel Exhaust Fluid for diesel-powered vehicles employing Selective Catalytic Reduction (SCR) technology must be maintained within a very narrow concentration range of less than 1.5%

Continental introducing new solutions for economic and efficient exhaust gas aftertreatment in commercial vehicles

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At the IAA in Hanover (Germany), Continental is presenting new solutions for exhaust gas aftertreatment in commercial vehicles. The technologies being shown are designed to help system suppliers and OEMs meet new exhaust emissions standards such as Euro VI (2013) and US10 /Tier4f. In a SCR system an aqueous urea solution (AdBlue) is injected into the exhaust flow to facilitate the conversion of nitrogen oxides in a catalytic converter.

Study finds gasoline exhaust contributes more to formation of secondary organic aerosols than diesel

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Contrary to expectations, exhaust from gasoline vehicles contributes more to the production of secondary organic aerosols (SOA) than exhaust from diesel vehicles, according to a new study by scientists from the Cooperative Institute for Research in Environmental Sciences (CIRES), NOAA’s Earth System Research Laboratory (ESRL) and other colleagues. According to the findings, diesel exhaust’s contribution to SOA is at max 20%; that leaves gasoline contributing the other 80% or more.

EIA: trends in downsized engine design leading to increased demand for higher-octane gasoline

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Turbochargers work by using a turbine driven off the exhaust gas to pressurize the intake air. Therefore, turbocharged engines typically require more design and operational features to prevent engine knock than naturally aspirated engines.

2016 85

The exhausting job of carbon-counting. The Green Piece

Green Cars News

Much like calorie-counting, carbon-counting is an annoying and tedious job designed to make you want to pull your eyes out through your ears. Tuesday 11 November, 2012. The Green Piece Column.

Researchers Exploring On-Board Exhaust Gas Reforming to Improve Combustion and Recover Waste Heat

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Professor Stan Golunski, Deputy Director of the newly established Cardiff Catalysis Institute , in collaboration with engineers at Brunel and Birmingham Universities, is investigating the feasibility of an on-board exhaust gas reforming system to improve combustion and recover waste heat. Initially the research will focus on diesel engines but the potential of exhaust gas reforming to achieve benefits in gasoline engines will also be evaluated.

Waste 60

PowerDriver simulations predict thermoelectric exhaust waste heat recovery output of 300W, -2.5% in fuel consumption; prototyping begins

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The European Union-funded PowerDriver project—a two-year, €3-million (US$4-million) research project initiated in February 2012 to turn exhaust gas waste heat into electricity using thermoelectric generator (TGEN) technology—has completed simulation work on on a potential automotive application. This is not least due to the fact that the TGEN is located within the exhaust line and is subject to significant thermal cycling.

2013 60

Motiv Engines introduces 2nd-generation split-cycle concept; MkII Clarke-Brayton heavy-duty engine being designed for LNG

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The thermodynamics of the engine are virtually identical to the company’s previous CCI (Compact Compression Ignition) design, as described in a 2013 SAE paper, but are implemented in a much more conventional way. It expands all the way to ambient pressure before the exhaust stroke.

2014 119

New 7th-generation Hyundai Sonata updates design, tweaks powertrain

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design language, stiffer body structure, better ride quality, reduced noise, vibration and harshness and advanced safety and convenience features. Theta II featured numerous design enhancements over its predecessor, beginning with a three-stage variable induction system (VIS) which automatically adjusted the volume of the air sucked into the combustion chamber to create an air-to-fuel mix optimized for varying engine load conditions. 2015 Sonata 2.0T Click to enlarge.

2014 69

Researchers propose low-temperature SOFC unit for reducing NOx and oxidizing HCs in lean-burn engine exhaust

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Their SOFC system can be operated without consuming the anode fuel (a reductant) at temperatures near that of the engine exhaust to eliminate the need for reductant refilling and extra heating. The NO x concentration in the exhaust of an automotive gasoline engine with spark ignition can be as high as 4000 ppm. Urea-based ammonia selective catalytic reduction (SCR) is one of the most promising methods for NO x removal from diesel engine exhaust.

2012 60

First results from HEI/ACES murine study find few biologic effects from exposure to exhaust from new technology diesel engines

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The few effects that were reported for the rats were mild hyperplasia (cell proliferation) in the lungs and slightly reduced lung function, and were most consistent with exposure to nitrogen oxides in the engine exhaust, which are being further reduced under 2010 US EPA standards now in effect. This phase started in 2008 with the installation of a specially designed emissions-generation and animal exposure facility at the Lovelace Respiratory Research Institute (LRRI).

2012 65

JCB New Ecomax T4 Engine Uses Ricardo Low Emissions Combustion Technology; Tier 4 Interim Level Emissions With No Exhaust Aftertreatment

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This technology enables the elimination of exhaust aftertreatment and provides a cost-effective, durable and high fuel economy solution for mid-range off-highway engine customers. The JCB EcoMax T4 Tier 4 engine. Click to enlarge. JCB introduced its new ‘Ecomax T4’ 4.4

2010 78

DLR wrapping up ECLIF in-flight study of emissions from alternative aviation fuels; potential for improved fuel design

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It takes off from the DLR facility in Oberpfaffenhofen and measures the exhaust gas composition and condensation trail properties at distances ranging from 100 meters to 20 kilometers behind the ATRA.

2015 85

Bosch, DEUTZ, and Eberspächer Set Up JV for Diesel Exhaust Aftertreatment

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KG have signed an agreement to set up a joint venture in the area of diesel exhaust aftertreatment. The objective is to use the core exhaust aftertreatment competencies of the three companies involved and, on the basis of a modular principle, to offer complete system solutions for construction and agricultural machinery, as well as for commercial vehicles. Thomas Wünsche, CEO of Eberspächer Exhaust Technology. Robert Bosch GmbH, DEUTZ AG, and Eberspächer GmbH & Co.

2009 60

Wärtsilä launches new more fuel efficient Aframax tanker design; dual-fuel option

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Wärtsilä introduced a new, more efficient, Aframax tanker design offering “practical and viable” solutions to meet current and forthcoming emissions legislation. The new Aframax design emphasizes energy efficiency to provide lower operating costs and enhanced environmental performance.

2014 78

Novel opposed-piston free-piston linear generator for hybrids seeks to overcome drawbacks of earlier designs

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Design of opposed-cylinder free-piston linear generator from earlier works with single, centered linear generator. Most of this work focused on a similar design: a single linear generator placed between two opposed cylinders, as in the diagram at right from Shanghai Jiaotong.

2012 106

Ford Conducts Design of Experiment Investigating Thermoelectric Energy Regeneration

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Conceptual schematic of direct thermoelectric generator mounted in a vehicle’s exhaust stream. The exhaust energy content of Atkinson-cycle engines, which are used in many hybrid powertrains, is lower than conventional IC engines due to the cycle’s inherently higher thermal efficiency.

2009 78

More heat-resistant Dow Corning elastomers extend thermal stability, design options for underhood applications

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With automotive design trending toward smaller engine compartments, increased exhaust gas recirculation and decreased air flow, the high-end temperatures in underhood environments are climbing and, more importantly, driving the performance requirements for FSRs to extremes not previously required. Dow Corning took a holistic approach to this problem by looking at polymer design, raw materials, additives and processing in order to boost overall material performance.

2015 60