Green Car Congress

SEPTEMBER 27, 2017

An analysis by a team from the University of California, Davis, MIT and Yale suggests that households that buy a fuel-efficient vehicle tend to compensate for that purchase by buying a bigger, more powerful second vehicle. This unintended effect could erode goals of fuel economy standard policies by up to 60%.

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Fuel Economy Economy Buy Fuel 150

Green Car Congress

APRIL 12, 2018

Researchers at Jilin University (China) have investigated the effect of gasoline components on fuel economy, combustion and emissions in a GDI (gasoline-direct-injection) engine. The team subsequently followed up this first study with a second, exploring the effects in a PFI (port-fuel-injection) engine. —Han et al.

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Fuel Economy Gasoline Economy Emissions 186

Green Car Congress

AUGUST 6, 2022

Argonne National Laboratory has published a new cradle-to-grave (C2G) lifecycle analysis (LCA) of US LDV vehicle-fuel pathways. The study provides a comprehensive analysis of the cost and greenhouse gas (GHG) emissions of a variety of vehicle-fuel pathways; the levelized cost of driving (LCD); and the cost of avoided GHG emissions.

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Fuel Vehicles PHEV Carbon 417

Green Car Congress

JANUARY 18, 2013

Huff Fuels, Engines and Emissions Research Center, Oak Ridge National Laboratory. Vehicle installed on the chassis dynamometer in the ORNL vehicle research laboratory. Oak Ridge National Laboratory (ORNL) staff have been performing vehicle research and testing in support of the fueleconomy.gov website. Click to enlarge.

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Fuel Economy Economy Fuel MPH 326

Green Car Congress

MARCH 24, 2016

Autonomous vehicle driving behavior can have a considerable effect on fuel economy. However, the study also showed that autonomous vehicle (AV) technology following algorithms designed without considering efficiency can degrade fuel economy by up to 3%.

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Fuel Economy Economy Fuel Vehicles 150

Green Car Congress

MAY 11, 2022

the world’s leading provider of open-source solutions, will collaborate to help advance software-defined vehicles at the edge. —Scott Miller, GM vice president, Software-Defined Vehicle and Operating System. These new vehicles give our industries a chance to create a common open platform without sacrificing functional safety.

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GM Vehicles General Motors Fuel Economy 432

Green Car Congress

JUNE 23, 2014

At the US Department of Energy’s (DOE’s) Annual Merit Review meeting in Washington, DC last week, Michael Ruth from Cummins noted that the DOE program target for the project is a fuel economy (CAFE) target of 26 mpg (9.05 l/100 km) for a vehicle of that size. Earlier post.). Source: Cummins. Click to enlarge.

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Fuel Economy Economy Gasoline Downsizing 357

Green Car Congress

AUGUST 30, 2010

The US Department of Transportation (DOT) and the US Environmental Protection Agency (EPA) are jointly proposing changes to the fuel economy labels consumers see on the window of new vehicles in dealer showrooms. A sample of the second proposed label for an extended range electric vehicle. Click to enlarge.

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Fuel Economy EPA Economy Fuel 297

Green Car Congress

JUNE 30, 2016

Electric vehicles (EVs) will need to increase their combined market share to 16% by 2020 for markets to achieve the aggressive fuel economy standards set by regulators, according to new research by the World Energy Council, the UN-accredited global energy body representing the entire energy spectrum. In the EU, the EV gap is 1.4

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Fuel Economy 2020 Economy Standards 247

Green Car Congress

JULY 4, 2018

Researchers at ORNL, in partnership with FCA US and Nemak USA, have developed a new suite of aluminum-based alloys that could give automakers a boost in achieving ambitious fuel economy goals. Current alloys inhibit engine efficiency because they soften at the peak temperatures present in highly efficient advanced engines.

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Fuel Economy Economy Fuel USA 186

Green Car Congress

APRIL 14, 2023

The US Environmental Protection Agency (EPA) released its 30 th annual Inventory of US Greenhouse Gas Emissions and Sinks (GHG Inventory), which presents a national-level overview of annual greenhouse gas emissions from 1990 to 2021. Fuel economy of light-duty vehicles is another important factor. From 2019 to 2021.

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EPA 2020 Emissions Climate Change 259

Green Car Congress

MAY 2, 2012

The Global Fuel Economy Initiative ( GFEI ) ( earlier post ) launched its second three-year effort to improve vehicle fuel economy around the world at the International Transport Forum in Leipzig. —“Global Fuel Economy Initiative Plan of Action 2012-2015. Earlier post.). Policy support.

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Fuel Economy Economy Global Fuel 231

Green Car Congress

JANUARY 10, 2017

Volatile gasoline prices have caused some regulators and carmakers alike to question the cost and effectiveness of current fuel economy standards, with some arguing they are too stringent and others saying they should be even stronger. —Ryan Kellogg, summarizing his research.

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Fuel Economy Chicago Economy Standards 150

Green Car Congress

JULY 4, 2018

Researchers at ORNL, in partnership with FCA US and Nemak USA, have developed a new suite of aluminum-based alloys that could give automakers a boost in achieving ambitious fuel economy goals. Current alloys inhibit engine efficiency because they soften at the peak temperatures present in highly efficient advanced engines.

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Fuel Economy Economy Fuel USA 150

Green Car Congress

NOVEMBER 3, 2017

The acquired data provides important insights into the fuel spray motion as well as the timing and quantity of soot formed under a wide range of conditions. Skeen noted that although new diesel vehicles are cleaner than ever before, some of the latest generation gasoline engines emit as much particulate matter as older diesel engines.

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Fuel Economy Economy Emissions Fuel 150

Green Car Congress

FEBRUARY 17, 2011

In response to federal policies to boost gas mileage, manufacturers have changed vehicle weights, improved tire-rolling resistance and added aerodynamic features to push fuel-economy rates past government-mandated thresholds. mpg and 22.4 mpg) that lead to large changes in tax liability or the amount of a subsidy. mpg US (12.7

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Fuel Economy Economy Fuel MPG 186

Green Car Congress

APRIL 14, 2011

GM is exploring the use of an ultracapacitor-based Active Energy Recovery Buffer (AERB) scheme as a low-cost means to improve fuel economy in conventional vehicles; results of a simulation study presented at SAE 2011 World Congress showed improvement of up to 1.3% liter engine and a six-speed transmission.

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Fuel Economy Low Cost Economy GM 240

Green Car Congress

OCTOBER 18, 2011

The study evaluated 695 tractor-trailers, heavy-duty trucks and drivers in multiple US locations to assess the effect of driving performance on fuel consumption and the impact of training and in-vehicle instant feedback on improving fuel economy. Fuel Efficiency Study: Commercial Transportation.

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Fuel Economy Economy Commercial Fleet 225

Green Car Congress

JUNE 20, 2014

Engineers at Toyota have developed an approach to applying the Atkinson cycle—used in the engines in Toyota hybrids since 1997—for engines in conventional, non-hybrid vehicles. The Atkinson cycle with a high compression ratio is a common approach that hybrid vehicle engines use to enhance thermal efficiency.

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Fuel Economy Economy Engine Toyota 278

Green Car Congress

DECEMBER 9, 2020

In a new report—“ Full Hybrid Electric Vehicle Markets 2021-2041 ”—IDTechEx forecasts that market value for hybrid electric vehicles will peak at $792 billion in 2027. Several European countries have set out plans or regulations to ban the sales of new ICE vehicles in the 2030s.

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Market Electric Vehicles Hybrid PHEV 243

Green Car Congress

FEBRUARY 24, 2011

NREL’s Fleet Test and Evaluation Team recently completed a year-long technology evaluation of gasoline hybrid electric (gHEV) FedEx Express delivery trucks compared with conventional diesel vehicles. On a drive cycle representing routes with frequent stops and accelerations, the gHEV trucks exhibited a 20% improvement in fuel economy.

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Fuel Economy Economy Gasoline Diesel 186

Green Car Congress

AUGUST 25, 2021

SAE International has released J2464: Electric and Hybrid Electric Vehicle Rechargeable Energy Storage System (RESS) Safety and Abuse Testing , a revised recommended practice for establishing safe battery systems. —Bob Galyen, chair of the SAE Vehicle Battery Standards Steering Committee.

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International Electric Vehicles Hybrid Energy Storage 170

Green Car Congress

MAY 9, 2012

Researchers from Southwest Research Institute (SwRI) and Eaton have demonstrated the application of downspeeding and supercharging a diesel vehicle, in conjunction with optimizing transmission gear ratios and the shift schedule, to deliver a greater improvement in fuel economy than a downsped and turbocharged configuration.

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Fuel Economy Economy Fuel Eaton 199

Green Car Congress

JULY 8, 2017

The CNG buses had an average fuel economy of 3.89 However, because Foothill Transit operates its BEB and CNG bus fleets differently, the efficiency results presented are not an apples-to-apples comparison. CNG buses generate Low Carbon Fuel Standard credits, although not as many as electric vehicles do.

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Fuel Economy Economy Fuel Maintenance 210

Green Car Congress

JUNE 17, 2016

Dana Holding Corporation will present its VariGlide planetary variator for beltless continuously variable transmissions (CVTs) at the International VDI Conference, to be held 21-22 June 2016, in Friedrichshafen, Germany. In 2012, Dana formed a strategic relationship with Fallbrook Technologies Inc.

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International Fuel Economy Economy 2016 150

Green Car Congress

MARCH 26, 2015

The Cummins team not only surpassed all fuel-economy targets, but also achieved criteria emissions lower than the stringent Tier 2/Bin 2 levels. The demonstration vehicle, provided by Nissan North America, is a 2010 Nissan Titan originally equipped with a gasoline V8 engine. Test cycle fuel economy (mpg).

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Fuel Economy Economy Diesel Light 150

Green Car Congress

MARCH 7, 2013

Within his talk about the need for a US energy policy at the IHS CERAWeek 2013 energy conference in Houston, GM Chairman and CEO Dan Akerson outlined some highlights of the company’s fuel economy plan through the 2016 model year. A good rule of thumb is that a 10% reduction in curb weight will reduce fuel consumption by about 6.5%.

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Fuel Economy Economy GM Gasoline 210

Green Car Congress

FEBRUARY 25, 2014

Southwest Research Institute (SwRI) has built a demonstrator vehicle, based on a 2012 Buick Regal GS, incorporating the latest D-EGR (dedicated EGR) technology ( earlier post ), an outgrowth of SwRI’s HEDGE (High Efficiency Dilute Gasoline Engine) consortium projects ( earlier post ). Engines Fuel Efficiency Vehicle Systems'

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Fuel Economy Engine Fuel Economy 277

Green Car Congress

JULY 21, 2021

Advocacy group Coltura has published a report that finds converting the biggest users of gasoline to EVs in the next ten years is critical to reaching climate goals and that present EV policies are poorly suited to accomplishing that conversion. This is more than the bottom 60% of users combined. The top 20% of gasoline users burn 48%.

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Gasoline St. Louis Emissions Carbon 397

Green Car Congress

NOVEMBER 1, 2013

For such small vehicle applications, manufacturers are seeking a fuel-efficient means of reducing engine-out NO x to avoid the cost of implementing a 3-way catalyst and closed-loop-controlled fuel injection system. When the entire vehicle costs around $700, that’s a significant difference.

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Fuel Economy Economy Engine Fuel 231

Green Car Congress

APRIL 17, 2013

This, when combined with secondary mass savings and other design changes, could boost fuel economy by around 18%. The EPA study aimed to reduce vehicle mass by 20% while meeting all NHTSA and IIHS safety standards, and maintaining or improving performance, handling and braking.

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Fuel Economy Economy Fuel EPA 257

Green Car Congress

MAY 9, 2012

Christopher Thomas, BorgWarner VP, Advanced Engineering, Engine Group and VP, Advanced Engineering, Drivetrain Group presented the basic concepts of VEMB and current BorgWarner test results at the recent SAE 2012 High Efficiency IC Engine Symposium. improvement in fuel economy on an E-class vehicle (e.g.,

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Fuel Economy Downsizing Economy Engine 218

Green Car Congress

FEBRUARY 23, 2020

Approximately 6 billion gallons of fuel are wasted in the US each year as vehicles wait at stop lights or sit in dense traffic with engines idling, according to US Department of Energy estimates. Examples from the ORNL Overhead Vehicle Dataset, generated with images captured by GRIDSMART cameras. Image: Thomas Karnowski/ORNL.

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Light Fuel Vehicles 2018 359

Green Car Congress

APRIL 25, 2016

In a paper presented at the 2016 SAE World Congress, Tula Technology, developer of Dynamic Skip Fire (DSF) cylinder deactivation technology, reported significant fuel economy gains of up to 18% over a conventional GM 6.2-liter Meaning, DSF reduces fuel consumption by 14-18% over V8. mpg at DSF versus 17.34 mpg at V8 mode.

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Fuel Economy Economy GM GMC 150

Green Car Congress

JUNE 14, 2011

Based on the results of the study, CAR believes the economic risk to the auto industry connected to mandating permanent fuel economy standards in the long run is “ very serious ” The group recommends periodic review to assess the rate of technology development and cost reduction of advanced technologies leading up to 2025.

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Fuel Economy Economy Auto Industry Standards 199

Green Car Congress

FEBRUARY 1, 2018

Engineers from Colorado-based Lightning Systems are using artificial neural networks to predict accurately the fuel economy and tailpipe emissions of fleet vehicles. Using artificial neural networks, we are able to accurately predict fuel consumption and emissions of commercial and government fleets.

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Fleet Emissions Fuel Vehicles 231

Green Car Congress

JULY 22, 2009

From October 2007 to April 2009, the average fuel economy of purchased new light-duty vehicles improved from 20.2 The study examined the relationship between two economic indicators—the unemployment rate and the price of gasoline—and purchase decisions of new vehicle buyers. mpg US (11.6 L/100km) in October 2007 to 21.3

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Fuel Economy Purchase Economy Fuel 150