Trending Sources

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

Green Car Congress

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.

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

Green Car Congress

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.

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

Green Car Congress

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.

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

Green Car Congress

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 33

New exhaust sleeving provides customizable flexible design for increased emissions performance

Green Car Congress

Federal-Mogul Corporation has enhanced its line of Thermflex exhaust insulating sleeves. The optimized design can now be tailored to fit any combination of exhaust pipe and tube geometries, helping to increase efficiency of a vehicle’s exhaust system, while protecting sensitive nearby vehicle components. Additionally, the unique flexible manufacturing process produces an exhaust sleeve that is application-specific, eliminating the need for custom tooling.

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

Green Car Congress

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.

Corning expands light-duty vehicle exhaust filter capacity in Germany

Green Car Congress

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.

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

Green Car Congress

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.

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

Green Car Congress

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.

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

Green Car Congress

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.

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

Green Car Congress

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.

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

Green Car Congress

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.

Reaction Design to add advanced soot particle-size prediction capability to FORTÉ

Green Car Congress

Reaction Design, a leading developer of combustion simulation software, is adding the ability to accurately simulate soot particle size distributions, as well as total particulate-matter emissions to the FORTÉ computational fluid dynamics (CFD) package for realistic 3D modeling of fuel effects in internal combustion engines. Founded in 2005 by Reaction Design, the MFC is an industry-led project for the development of cleaner burning, higher-mileage vehicles.

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

Green Car Congress

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.

Model Fuels Consortium and Reaction Design developing predictive modeling software for soot particle size and number

Green Car Congress

The Model Fuels Consortium (MFC) II ( earlier post ), led by Reaction Design, a leading developer of combustion simulation software, is developing software that its members can use to simulate accurately the formation of soot particulates. The MFC and Reaction Design have been working proactively to develop soot modeling approaches that help reduce these harmful emissions, as we anticipate that more regulations will follow with increasingly strict limits on particle size and number.

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

Green Car Congress

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).

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.

New fuel-efficient bulk carrier concept design; DNV estimates new tankers, bulkers and container vessels will be up to 30% more energy efficient by 2020 than newbuilds today

Green Car Congress

The Shanghai Merchant Ship Design & Research Institute (SDARI) and development partners DNV and Wärtsilä have unveiled a new Handysize—i.e., ships with a cargo-carrying capability of less than 60,000 metric tonnes—bulk carrier concept design: the Green Dolphin.

GL presents Approval in Principle to new TECHNOLOG LNG container vessel design

Green Car Congress

Germanischer Lloyd (GL) has presented an Approval in Principle (AiP) certificate to TECHNOLOG for the LNG-fueled IPP-designed STREAM range of 3,000 TEU to 5000 TEU liner or feeder vessels designed for worldwide service. The entire vessel design concept is focused around saving energy.

VW new Touareg with new design and new technologies; focus on diesel

Green Car Congress

With SCR, the amount of NO x in the exhaust is significantly reduced. In the case of the ''Terrain Tech'' version—the Touareg with special off-road applications and a four-wheel drive system with low range set of gear ratios, designed among things for particularly demanding off-road conditions – there is an improvement from 7.3 Volkswagen has given its Touareg SUV a sharper look and enhanced it technically in all areas.

LNG-fueled “Clean Sky” bulk carrier design developed by COSCO Shipyard Group, Golden Union and Lloyd’s Register receives AIP

Green Car Congress

Lloyd’s Register has provided approval in principle (AIP) for the new “Clean Sky” bulk carrier design incorporating an LNG-as-fuel system. Illustration of the Clear Sky class Kamsarmax design. Clean Sky class design Kamsarmax bulk carrier. Draft, design: 12.20m.

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

Green Car Congress

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.

DSM Stanyl ForTii used in exhaust gas recirculation temperature sensors

Green Car Congress

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.

Gas 1

GM details 2016 Chevrolet Malibu Hybrid powertrain design and operation

Green Car Congress

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.

MAN Diesel & Turbo designs LNG-fueled two-stroke ME-GI engine for DNV Quantum 9000 container ship

Green Car Congress

MAN Diesel & Turbo has designed an LNG-fueled two-stroke ME-GI engine for DNV’s mew concept Quantum 9000 container ship. The gas supply line is designed with ventilated double-wall piping and HC sensors for safety shutdown.

New 1.6L diesel in 2018 Chevrolet Equinox related to Opel’s 1.6L CDTi Whisper Diesel

Green Car Congress

CDTi Whisper Diesel ( earlier post ) in Europe, and is derived from a common Italian-German-American medium diesel engine design, according to GM. A variable-vane turbocharger enables the engine to deliver more power with lower exhaust emissions and no decrease in overall fuel efficiency. NO x emissions are controlled via a Selective Catalyst Reduction (SCR) after-treatment system that uses urea-based Diesel (Emission) Exhaust Fluid (DEF).

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

Green Car Congress

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 (?),

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

Green Car Congress

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.

New Tester Measures Urea Concentration in Diesel Exhaust Fluids

Green Car Congress

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%

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

Green Car Congress

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.

Infiniti introducing new advanced 3.0L V6 twin-turbo engines for 2016 Q50; up to 6.7% improvement in fuel efficiency

Green Car Congress

The combination of a new turbine speed sensor and an optimized turbine blade design realize greater performance with more immediate response. Moving the catalytic converter closer to the exhaust point saves weight by making the engine more compact than before.

2015 45

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

Green Car Congress

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.

Gas 1

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

Green Car Congress

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.

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

Green Car Congress

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

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

Green Car Congress

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.

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

Green Car Congress

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.

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

Green Car Congress

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

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

Green Car Congress

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.

A further look at elements of Audi’s new generation 3.0L TDI diesel

Green Car Congress

The new 3.0-liter engine is designed to be utilized in both MQB (transverse) and MLB (longitudinal) architectures within the larger Volkswagen Group. The exhaust-turbocharged V6 will come in two versions: 160 kW (218 hp) and 200 kW (272 hp).

Ford Conducts Design of Experiment Investigating Thermoelectric Energy Regeneration

Green Car Congress

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.