Economy, Exhaust, Standards and Study

CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

JULY 18, 2022

The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). The study used two fuels—an E10 and E15. SULEV30, ULEV50, ULEV70, and ULEV125).

Fuel Economy

Fuel Economy Economy Fuel Ozone

Study finds engines emit exhaust nanoparticles even when not fueled during engine braking

Green Car Congress

JANUARY 19, 2014

Exhaust particle size distributions measured by ELPI (color map) and particle concentration measured by CPC (white line) during individual engine braking conditions (speed change from 32 km/h to 0 km/h). The exhaust sample was taken from the exhaust manifold. The exhaust sample was taken from the exhaust manifold.

Exhaust

Exhaust Engine Fuel Greece

Study links ambient PM2.5 and ozone specifically caused by vehicle exhaust emissions to ~361,000 premature deaths worldwide in 2010 and ~385,000 in 2015

Green Car Congress

MARCH 1, 2019

A new study provides the most detailed picture available to date of the global, regional, and local health impacts attributable to emissions from four transportation subsectors: on-road diesel vehicles; other on-road vehicles; shipping; and non-road mobile engines such as agricultural and construction equipment. Source: The ICCT.

Ozone

Ozone 2015 2010 Exhaust

CMU study finds secondary organic aerosol production from PFI and GDI vehicles has been “substantially” reduced by tightening NMOG standards

Green Car Congress

JANUARY 28, 2018

Now, in a new study published in the ACS journal Environmental Science & Technology , researchers at Carnegie Mellon University have found that secondary organic aerosol (SOA) production from both port fuel injection (PFI) and gasoline direct injection (GDI) vehicles has been substantially reduced through the tightening of NMOG emissions.

Standards

Standards Production Exhaust Gasoline

Environment Canada study finds vehicle exhaust a significant source of isocyanic acid; suggests consideration of new emission standard

Green Car Congress

JULY 12, 2013

Researchers at Environment Canada have found that vehicle exhaust is a significant source of isocyanic acid (HNCO), a toxic gaseous acid that is a product of various forms of combustion and a potential health concern. Automobile exhaust is also a known source of inorganic acids such as nitric (HNO 3 ) and nitrous (HONO) acids.

Exhaust

Exhaust Canada Environment Emissions

ORNL study quantifies fuel economy costs of common driver practices and vehicle alterations

Green Car Congress

APRIL 10, 2014

Researchers at Oak Ridge National Laboratory (ORNL) have quantified the fuel economy effects of some common driver practices and vehicle accessories or alterations—including underinflated tires, open windows, and rooftop and hitch-mounted cargo. liter four-cylinder engine, also suffered as its fuel economy dipped 22% from 42.5

Fuel Economy

Fuel Economy Economy Cost Of Fuel

Study: curbing diesel emissions could reduce mortality rates in big cities

Green Car Congress

OCTOBER 1, 2019

Freight transportation is a pillar of the US national economy, but while long-haul trucks account for less than 6% of the vehicle miles traveled over US highways, they account for about 40% of the emissions of air polluting particulate matter and about 55% of nitrogen oxides, the precursor to ozone in the atmosphere, the study said.

Emissions

Emissions Diesel Ozone United States

CPT, TU Wien study finds 48V mild diesel hybrid cuts engine-out NOx 9%, 4.5% fuel economy improvement

Green Car Congress

MAY 31, 2017

A joint study by Controlled Power Technologies (CPT) and Austria’s Technische Universität Wien (TU Wien) into 48V diesel mild hybrid technology verified a 9% reduction of NO x in raw engine-out emissions, while retaining the fuel economy and CO 2 benefits of diesel engine technology. —Paul Bloore.

Fuel Economy

Fuel Economy Diesel Economy Engine

Study finds catalyzed gasoline particulate filters effective at reducing particulate and PAH emissions from GDI engines

Green Car Congress

FEBRUARY 22, 2018

Their study is publishedin the ACS journal Environmental Science & Technology. The found that using a GPF did not show any fuel economy and CO 2 emission penalties, while the emissions of total hydrocarbons (THC), carbon monoxide (CO), and nitrogen oxides (NOx) were generally reduced. Yang et al. Click to enlarge.

Gasoline

Gasoline Emissions Engine Fuel Economy

Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

Green Car Congress

JANUARY 15, 2012

The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. Current 2010 USEPA emissions standards for NO x and PM are set at 0.20 The study by Thiruvengadam et al. Credit: ACS, Thiruvengadam et al. Click to enlarge. g/bhp-hr and 0.01

Exhaust

Exhaust Diesel West Virginia 2007

Ford study suggests GDI engines can meet coming California and US PM emissions standards over 150k miles; more work to be done

Green Car Congress

OCTOBER 16, 2013

As reported in a paper in ACS journal Environmental Science & Technology , the results showed that GDI technology has the potential to meet the upcoming California LEV III and US EPA Tier 3 PM mass standard of 3 mg/mi (phasing in over MY2017?2021) Schematic diagram of test vehicle engine & exhaust system and PM sampling systems.

Standards

Standards Emissions Miles Engine

ICCT: incremental technology can cut vehicle CO2 by half and increase fuel economy >60% through 2030 with ~5% increase in price

Green Car Congress

MARCH 22, 2017

l/100 km) in 2016, the The ICCT team assessed increased consumer label fuel economy (as opposed to the regulatory test fuel economy) to 35 mpg (6.71 The resulting trajectory would reduce CO 2 emissions by half and increase fuel economy by more than 60% from 2016 through 2030. Starting from a baseline 26 mpg (9.04

Fuel Economy

Fuel Economy Economy Fuel Price

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

Green Car Congress

JUNE 2, 2014

Solid bars represent low ambient temperature measurements whereas open, dashed bars represent standard temperature measurements. Studies suggest that atmospheric BC particles have a direct radiative forcing second to CO 2. For their study, the Environment Canada/MECA team used two midsize sedans and two compact vehicles.

Environment

Environment Exhaust Gasoline Canada

ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

JANUARY 18, 2013

This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.-legal drop in fuel economy due to traveling 80 mph rather than 70 mph. Speed increase.

Fuel Economy

Fuel Economy Economy Fuel MPH

ICCT study concludes no technical barriers to use of higher blends of ethanol

Green Car Congress

FEBRUARY 5, 2014

Broadly, the study by Stephanie Searle, Francisco Posada Sanchez, Chris Malins, and John German concludes that (a) technical barriers do not prevent the use of higher blends of ethanol, and (b) slow uptake of blends such as E15 and E85 is due to other factors, including high cost, legal and warranty issues, and consumer awareness and acceptance.

Gasoline

Gasoline Exhaust Water Fuel

Study finds air quality models significantly underestimate traffic as source of NOx in Europe

Green Car Congress

JUNE 1, 2017

Traffic contributes more to NO x emissions in Europe than previously thought, according to a new study by a team at the University of Innsbruck. A large number of new studies have recently been published suggesting that emission levels from test stands have to be adjusted upwards. —Karl et al.

Europe

Europe Diesel Emissions Pollution

Ford researchers report detailed study of the effect of different ethanol blend levels on emissions from FFVs

Green Car Congress

DECEMBER 23, 2013

A team at Ford Motor Company’s Research and Innovation Center in Dearborn conducted a detailed study of the effect of ethanol blend level in emissions, using a 2006 model Mercury Grand Marquis flexible fuel vehicle (FFV) operating on E0, E10, E20, E30, E40, E55, and E80 on a chassis dynamometer. Engine-out exhaust contains typically 1?3%

Emissions

Emissions Ford Exhaust Engine

ADEPT project to apply gasoline engine HyBoost system to diesel; 48V architecture; full hybrid fuel economy at much lower cost

Green Car Congress

SEPTEMBER 4, 2013

The project aims to deliver full hybrid equivalent fuel economy and performance with less than 70 g/km CO 2 emissions as measured over the European Drive Cycle, but at a significantly lower cost. version of its vehicle (a 2009 Ford Focus) but with fuel economy and CO 2 emissions approaching those of a Prius.

Fuel Economy

Fuel Economy Diesel Economy Gasoline

J.D. Power and Associates study finds EPA emission-compliant heavy-duty engines yielding increase in engine problems, decline in satisfaction

Green Car Congress

AUGUST 23, 2012

Technology changes related to revised emissions standards for heavy-duty trucks are causing an increase in heavy-duty truck engine problems and a decrease in overall satisfaction with the powertrain, according to the JD Power and Associates 2012 US Heavy-Duty Truck Engine and Transmission Study. Overall Scores. Caterpillar.

Engine

Engine EPA Emissions Power

UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

Green Car Congress

JANUARY 2, 2019

Data presented as mean ± standard deviation, N=3. The study found that higher ethanol blends—i.e., The study found that higher ethanol blends—i.e., A fuel economy penalty was also observed for lower energy content E30 and E78 blends compared to both E10 fuels. Yang et al. —Yang et al.

Pollution

Pollution Fuel Vehicles Emissions

Study for European Parliament assesses options for turning CO2 into methanol for use in transport

Green Car Congress

MAY 25, 2014

Carbon dioxide recycling in the methanol economy Source: Olah et al. The study evaluated costs and benefits from a life cycle perspective in order to compare various raw materials for producing methanol and in order to reflect the potential benefits of methanol obtained from CO 2. 2009, earlier post. Click to enlarge.

Transportation

Transportation CO2 Carbon Hydrogen

China team propose method to reduce soot and CO emissions without NOx and thermal efficiency penalties in direct-injection natural gas engines

Green Car Congress

MAY 6, 2019

To optimize further the partially premixed combustion mode, they also assessed the combined use of partially premixed combustion mode and EGR (exhaust gas recirculation). Currently, the more stringent emission standards call for more advanced technologies of emission control in natural gas engines. —Li et al. Zhang, Q.,

Gas

Gas Emissions Engine China

ICCT-sponsored study of in-use testing of 3 Tier2-Bin5, CA LEV-II light-duty diesels finds wide variation of emissions against the limits

Green Car Congress

JUNE 2, 2014

Average NO x emissions of test vehicles over the five test routes compared to US-EPA Tier2-Bin5 emissions standard; repeat test variation intervals are presented as ±1?; The second urea-SCR equipped vehicle exceeded the standard only during rural-up/downhill operating conditions by a factor of ~10.

Diesel

Diesel Emissions Light Los Angeles

Frost & Sullivan forecasts Gasoline Particulate Filters to climb from 50,335 units now to 4.2-4.6 million units by 2020

Green Car Congress

NOVEMBER 8, 2015

However, unlike conventional gasoline engines, gasoline direct injection engines produce particulate matter, as do diesels, and emission controls will become an issue the technology must address as standards for particle mass tighten, and also as standards for particle numbers emerge. Ford and GM, will account for 11.5–13.5%

Gasoline

Gasoline 2020 North America Exhaust

2017 Chrysler Pacifica wins Altair Enlighten Award for weight reduction in full vehicle category; Toyota, Faurecia and AP&T module, technology winners

Green Car Congress

JULY 31, 2017

Toyota’s carbon fiber closure panels for the 2017 Prius Prime and Lexus LC500 ( earlier post ), and Faurecia’s Adaptive Valve for exhaust systems employed on the 2017 Chevrolet Silverado took the top honors for the module category. Weight reduction is a key contributor to improved fuel economy. 2017 Chrysler Pacifica.

Chrysler

Chrysler 2017 Toyota Minivan

Japan automakers going slow with biodiesel; JAMA maintains stance on B5 as maximum for now

Green Car Congress

JANUARY 22, 2014

JAMA bases its postion on the results of study from the Japan Auto-Oil Program subsidized by Japan’s Ministry of Economy, Trade and Industry (METI). Major components of the JATOP program were: A study on the use of high biodiesel blends in diesel vehicles; A study on the enhanced use of biofuels in gasoline vehicles; and.

Japan

Japan Diesel Oil Fuel

Mazdas new SKYACTIV gasoline and diesel engines are steps on the road to its Ideal Engine; focus on compression ratio

Green Car Congress

AUGUST 4, 2011

Since this energy loss is primarily thermal in nature and can be attributed to the exhaust, cooling system, and engine and transmission surfaces, Mazda’s R&D team’s central focus is on improving the engine’s thermal efficiency cost-effectively. Extreme compression ratio rather than downsizing. Although downsizing—i.e.,

Mazda

Mazda Engine Gasoline Diesel

OECD: rising air pollution-related deaths taking heavy toll on society; more should be done to reduce transport emissions

Green Car Congress

MAY 23, 2014

This pollution is costing advanced economies plus China and India an estimated US$3.5 This pollution is costing advanced economies plus China and India an estimated US$3.5 While there is a standard method for calculating the cost of lost life, there is not one for loss of health. Outdoor air pollution kills some 3.5

Pollution

Pollution Transportation Emissions India

Report argues advanced HD natural gas vehicles foundational for California to hit air and climate goals; near zero-emission potential

Green Car Congress

JANUARY 28, 2014

Compared to the 2010 “Business as Usual” scenario—which includes all adopted emission control measures for the South Coast—NO x levels must be reduced by 65% and by 75% to meet the 2023 and 2032 ozone standards, respectively. California’s Climate Protection Strategies do not help meet NAAQS Standards. Click to enlarge.

Climate

Climate Gas Emissions California

Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

Green Car Congress

MAY 12, 2017

A new study quantifying emissions from a fleet of gasoline direct injection (GDI) engines and port fuel injection (PFI) engines finds that the measured decrease in CO 2 emissions from GDIs is much greater than the potential climate forcing associated with higher black carbon emissions from GDI engines. —Saliba et al.

Fleet

Fleet Engine Global Fuel Economy

ICCT study finds real-world NOx emissions from Euro 6 diesels ~7x higher than Euro 6 regulatory levels

Green Car Congress

OCTOBER 11, 2014

On-road NO x emission levels of Euro 6 diesel cars in Europe are on average about seven times higher than the NO x limit set by the Euro 6 emission standard, according to a new report published in Berlin by the International Council on Clean Transportation (ICCT). Earlier post.). Diesel vehicles make up about 50% of all new cars in the EU.

Diesel

Diesel Emissions West Virginia 2014

DOE to award up to $137M for SuperTruck II, Vehicle Technology Office programs

Green Car Congress

AUGUST 16, 2016

Conduct fundamental studies of an alkali halide based solid‐electrolyte to demonstrate self‐ healing properties to overcome low cycle life and safety concerns associated with dendrite formation for lithium metal batteries. valve faces, piston crowns, and exhaust ports) to improve fuel economy. Description. Federal funding.

Vehicles

Vehicles Plug-in Lithium Ion Universal

DOE issues FY 2015 SBIR/STTR Release 2 funding opportunity, including hydrogen fuel cells, electric drive batteries

Green Car Congress

DECEMBER 9, 2014

Phase I feasibility studies must be evaluated in full cells (not half cells) greater than 200mAh in size while Phase II technologies should be demonstrated in full cells greater than 2Ah. Statistically valid fuel economy improvements (95% confidence level) of at least 5.0% Onboard Fuel Separator or Reformer. are desired.

2015

2015 Hydrogen Fuel Batteries

HEI report identifies potential health consequences from new vehicle fuels and technologies; recommended actions

Green Car Congress

MARCH 14, 2011

—“The Future of Vehicle Fuels and Technologies” Among the findings of the report are: New gasoline direct injection (GDI) technology offers improvements in fuel economy. 1- and 3-month) animal exposure studies for GDI engine exposures.

Fuel

Fuel Vehicles Emissions Oil-Sands

Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

AUGUST 30, 2009

The oil price shocks of the 1970s led the Brazilian government to address the strain high prices were placing on its fragile economy. During the early 1900s, a distillery was a standard piece of farm equipment. 80.28, “applicable standard” means: 9.0 Donovan, CEO Renergie, Inc. Use of Hydrous Ethanol in Brazil. 40 CFR § 80.27(d)

Transportation

Transportation Fuel Renewable Gasoline-Electric

2024 Genesis GV80 Review

Baua Electric

MAY 2, 2024

Upticks in the purchase price are somewhat offset by the previously optional Luxury Pack now incorporated as standard, and the revised GV80 range is offered with new safety and convenience technologies plus updated paint and extended upholstery options. Both models run an eight-speed automatic transmission as standard.

Petrol

Petrol SUV Range Mercedes

MAHLE study finds its Turbulent Jet Ignition pre-chamber initiated combustion system can deliver HCCI-like fuel economy in a conventional PFI engine

Green Car Congress

APRIL 14, 2011

Results of this study showed that the pre-chamber jet ignition combustion system roughly matches HCCI fuel economy across both NEDC and FTP drive cycles, with a 13% improvement in fuel economy recorded over the baseline stoichiometric (λ=1) spark ignition combustion system. The new study. —Attard et al.

Fuel Economy

Fuel Economy Economy Engine Fuel

National Academies release third review of the 21st Century Truck Partnership

Green Car Congress

SEPTEMBER 14, 2015

The Partnership aims to “ accelerate the introduction of advanced truck and bus technologies that use less fuel, have greater fuel diversity, operate more safely, are more reliable, meet future emissions standards, and are cost effective.” In terms of fuel economy, the truck achieved 10.7 gallons/1,000 ton-miles.

MPG

MPG Miles 2009 Fuel

Researchers propose evaluating alt fuel efficiency based on energy rather than volume; impact of ethanol on vehicle efficiency and GHGs

Green Car Congress

MAY 17, 2013

Standard deviations increase by >10% and >200% when used in high and low blends, respectively. To determine the vehicle efficiency effect of ethanol, they compiled paired energy efficiency data from all known studies of existing spark injection (SI)-engine vehicles operating on ethanol/gasoline blends and pure gasoline.

Fuel

Fuel Energy Gasoline-Electric Gasoline

Daimler opens new MB R&D center in Beijing, presents G-Code hydrogen-electric plug-in hybrid all-wheel drive concept

Green Car Congress

NOVEMBER 4, 2014

Disclaimer: Mercedes-Benz emphasized that the G-Code, like the previously introduced Ener-G-Force and GT 6 vehicle studies, “ makes absolutely no claim to be implemented within foreseeable periods.”. The digital sound modulation also lets the occupants experience the soundscape of a powerful sports car equipped with a flap exhaust system.

Plug-in

Plug-in All-Electric Hydrogen Plug

Update on the ACCESS fuel efficient engine project; simulations find up to 48.9% improvement in fuel economy over baseline

Green Car Congress

MAY 8, 2013

Future advanced engine and powertrain configurations must address emission and fuel economy requirements for worldwide applications, transition to bio-fuels, and synergies with future powertrain trends. Combustion studies. improvement in fuel economy over the baseline engine for the Metro-Highway (M-H) cycle. Earlier post.).

Fuel Economy

Fuel Economy Economy Fuel Engine

DOE to award $7M to accelerate fuel and engine co-optimization technologies; Co-Optima initiative

Green Car Congress

AUGUST 1, 2016

In addition, already-efficient conventional compression ignition (CI) engines can realize fuel economy increases enabled by improved, low GHG-intensity fuels. Previous studies have investigated the sooting potential of various fuel components by adding them individually to a blendstock and measuring the impact on particulate emissions.

Engine

Engine Fuel Emissions Pollution

ExxonMobil, Corning and Toyota develop onboard membrane system to separate gasoline into octane fractions to optimize engine efficiency and performance

Green Car Congress

APRIL 10, 2014

In a paper on the OBS presented at the SAE 2014 World Congress, the researchers suggested that potential applications include downsizing to increase fuel economy by ?10% The OBS system uses waste exhaust energy to effect the fuel separation and provides a simple and reliable means for managing the separated fuels.

Gasoline

Gasoline Engine Toyota Fuel Economy

Achates: LD opposed-piston, 2-stroke diesel can meet 2025 final CAFE, Tier 3 standards for full-size pickup; 30% better FE than Cummins ATLAS

Green Car Congress

APRIL 15, 2014

the developer of a family of two-stroke compression-ignition opposed-piston engines ( earlier post ), has performed an in-depth study on the performance and emissions of light-duty version of its engine packaged for a full-size pickup truck. For the study, Achates Power modeled a 2.25-liter, Source: Achates Power. Click to enlarge.

Diesel

Diesel Fuel Economy Standards Engine

CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Study finds engines emit exhaust nanoparticles even when not fueled during engine braking

Study links ambient PM2.5 and ozone specifically caused by vehicle exhaust emissions to ~361,000 premature deaths worldwide in 2010 and ~385,000 in 2015

CMU study finds secondary organic aerosol production from PFI and GDI vehicles has been “substantially” reduced by tightening NMOG standards

Environment Canada study finds vehicle exhaust a significant source of isocyanic acid; suggests consideration of new emission standard

ORNL study quantifies fuel economy costs of common driver practices and vehicle alterations

Study: curbing diesel emissions could reduce mortality rates in big cities

CPT, TU Wien study finds 48V mild diesel hybrid cuts engine-out NOx 9%, 4.5% fuel economy improvement

Study finds catalyzed gasoline particulate filters effective at reducing particulate and PAH emissions from GDI engines

Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

Ford study suggests GDI engines can meet coming California and US PM emissions standards over 150k miles; more work to be done

ICCT: incremental technology can cut vehicle CO2 by half and increase fuel economy >60% through 2030 with ~5% increase in price

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

ORNL researchers quantify the effect of increasing highway speed on fuel economy

ICCT study concludes no technical barriers to use of higher blends of ethanol

Study finds air quality models significantly underestimate traffic as source of NOx in Europe

Ford researchers report detailed study of the effect of different ethanol blend levels on emissions from FFVs

ADEPT project to apply gasoline engine HyBoost system to diesel; 48V architecture; full hybrid fuel economy at much lower cost

J.D. Power and Associates study finds EPA emission-compliant heavy-duty engines yielding increase in engine problems, decline in satisfaction

UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

Study for European Parliament assesses options for turning CO2 into methanol for use in transport

China team propose method to reduce soot and CO emissions without NOx and thermal efficiency penalties in direct-injection natural gas engines

ICCT-sponsored study of in-use testing of 3 Tier2-Bin5, CA LEV-II light-duty diesels finds wide variation of emissions against the limits

Frost & Sullivan forecasts Gasoline Particulate Filters to climb from 50,335 units now to 4.2-4.6 million units by 2020

2017 Chrysler Pacifica wins Altair Enlighten Award for weight reduction in full vehicle category; Toyota, Faurecia and AP&T module, technology winners

Japan automakers going slow with biodiesel; JAMA maintains stance on B5 as maximum for now

Mazdas new SKYACTIV gasoline and diesel engines are steps on the road to its Ideal Engine; focus on compression ratio

OECD: rising air pollution-related deaths taking heavy toll on society; more should be done to reduce transport emissions

Report argues advanced HD natural gas vehicles foundational for California to hit air and climate goals; near zero-emission potential

Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

ICCT study finds real-world NOx emissions from Euro 6 diesels ~7x higher than Euro 6 regulatory levels

DOE to award up to $137M for SuperTruck II, Vehicle Technology Office programs

DOE issues FY 2015 SBIR/STTR Release 2 funding opportunity, including hydrogen fuel cells, electric drive batteries

HEI report identifies potential health consequences from new vehicle fuels and technologies; recommended actions

Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

2024 Genesis GV80 Review

MAHLE study finds its Turbulent Jet Ignition pre-chamber initiated combustion system can deliver HCCI-like fuel economy in a conventional PFI engine

National Academies release third review of the 21st Century Truck Partnership

Researchers propose evaluating alt fuel efficiency based on energy rather than volume; impact of ethanol on vehicle efficiency and GHGs

Daimler opens new MB R&D center in Beijing, presents G-Code hydrogen-electric plug-in hybrid all-wheel drive concept

Update on the ACCESS fuel efficient engine project; simulations find up to 48.9% improvement in fuel economy over baseline

DOE to award $7M to accelerate fuel and engine co-optimization technologies; Co-Optima initiative

ExxonMobil, Corning and Toyota develop onboard membrane system to separate gasoline into octane fractions to optimize engine efficiency and performance

Achates: LD opposed-piston, 2-stroke diesel can meet 2025 final CAFE, Tier 3 standards for full-size pickup; 30% better FE than Cummins ATLAS

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