Green Car Congress

AUGUST 29, 2022

A new University of Michigan study finds that making the switch to all-electric mail-delivery vehicles would lead to far greater reductions in greenhouse gas emissions than previously estimated by the US Postal Service (USPS). The Postal Service has not commented on the U-M study. Earlier post.). The USPS estimate was 10.3

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District of Columbia Fleet Gas-Electric Gasoline-Electric 435

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. They presented their results in a paper at SAE 2014 World Congress in Detroit.

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Fuel Economy Economy Cost Of Fuel 313

Green Car Congress

JANUARY 6, 2021

on average, increasing even more in car-dependent cities, according to a new study led by researchers at Carnegie Mellon University. Visual summary of regression model findings estimating TNC market entry effects on vehicle ownership, fuel economy, and transit ridership. Ward et al. cities,” iScience doi: 10.1016/j.isci.2020.101933.

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Fuel Economy Vehicles Economy 2017 418

Green Car Congress

JUNE 6, 2020

Using telematics, NYC Fleet, part of New York City’s Department of Citywide Administrative Services (DCAS), recently analyzed actual fuel economy in its hybrid and non-hybrid vehicles and compared it to the EPA ratings for each make and model. hybrids are even more fuel efficient as compared to regular fuel vehicles than expected.

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Fuel Economy Economy Fleet Fuel 207

Green Car Congress

MARCH 5, 2022

there is substantial variation in emissions based on where and when a vehicle is charged and operated, due to the impact of ambient temperature on fuel economy and the spatiotemporal variability in grid carbon intensity across the United States. This is an important study to inform and encourage climate action. Woody et al.

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Light Gas Ford Vehicles 435

Green Car Congress

SEPTEMBER 29, 2012

Laboratory and in-use fuel economy results Source: NREL. The NREL team collected and analyzed in-service fuel economy, maintenance, and other vehicle performance data on 11 hybrid (P100H) and 11 conventional diesel (P100D) step vans operated by the United Parcel Service (UPS) in Minneapolis. Click to enlarge.

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Fuel Economy Economy Hybrid Diesel 350

Green Car Congress

SEPTEMBER 7, 2017

A team at Carnegie Mellon University has found that engineering design modifications that compromise other performance attributes—specifically acceleration—offer a pathway to reduce the cost to automakers of compliance with fuel economy standards.

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Fuel Economy Economy Design Fuel 150

Green Car Congress

MARCH 6, 2013

Sivak found that while the vehicle fuel economy of the entire light-duty fleet improved by 40% (from 13 mpg US to 21.6 l/100km), because of the decrease in vehicle load, the occupant fuel economy only improved by 17% (from 24.8 Combining these two effects yields a reduction of about 14% in the amount of fuel used.

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Fuel Economy Economy Fuel North America 311

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

APRIL 17, 2013

A new study by EDAG Group, commissioned by the Aluminum in Transportation Group of the US Aluminum Association, finds that an all-aluminum body in white (BIW) can deliver potential mass savings in the 35 – 40% range over a base steel BIW. Aluminum materials used in the study will be “current technology” only. Click to enlarge.

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Fuel Economy Economy Fuel EPA 257

Green Car Congress

JANUARY 25, 2020

The gasoline direct injection (GDI) engine is one of the most prominent technologies car manufacturers adopted to achieve the fuel economy and carbon dioxide emission goals established in 2012 by the US Environmental Protection Agency. The market share of GDI-equipped vehicles increased from 2.3% —Neyestani et al.

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Climate Carbon Engine Fuel Economy 348

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

JUNE 15, 2021

The study considers five different powertrains (internal combustion engine, hybrid-electric, plug-in hybrid-electric, fuel-cell-electric, and battery-electric) and 12 cost components (purchase cost, depreciation, financing, fuel, insurance, maintenance, repair, taxes, registration fees, tolls and parking, payload capacity and labor).

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Maintenance Cost Of Chad Plug-in 418

Green Car Congress

AUGUST 9, 2012

Waste-hauling fleets can reduce fuel consumption by up to 13.9% by engaging in fuel-efficient, eco-driving best practices, according to a newly released study by SmartDrive Systems, a provider of driving intelligence solutions. The study found that within two months, the top 25% of drivers improved their fuel economy from 2.52

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Fuel Economy Waste Economy Fleet 225

Green Car Congress

JUNE 21, 2011

More than 40% of consumers view fuel economy as “extremely important” when considering a new vehicle purchase today, up 13.5% from a decade ago, according to a 2011 Maritz Research study. Thirty-seven percent of consumers say fuel economy will have the “greatest impact” on their next vehicle purchase.

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Fuel Economy Purchase Economy 2001 247

Green Car Congress

DECEMBER 22, 2022

Tire rolling resistance is closely related to overall vehicle fuel economy or range in both ICE and electric vehicles (EVs). Currently, it is understood that rolling resistance reduction is a reliable strategy for optimizing a vehicle’s fuel economy or cruising range.

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Fuel Economy Economy China Range 210

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.

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Fuel Economy Economy Fuel MPH 326

Green Car Congress

FEBRUARY 21, 2013

In a study published in the journal Energy Economics , MIT researchers have found that a fuel economy standard is at least six to fourteen times less cost effective than a fuel tax when targeting an identical reduction in cumulative gasoline use (20% by 2050). —Karplus et al. Paltsev, M.

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Fuel Economy MIT Fuel Tax Economy 288

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

MARCH 3, 2021

In a recent collaborative study led by the University of Maryland (UMD), researchers found that consumers tend to buy something less fuel efficient than they normally would for their second car after buying an eco-friendly vehicle. The data revealed multiple trends that correlate with a decrease in overall fuel economy and efficiency.

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Purchase Fuel Economy Fuel Cash For Clunkers 220

Green Car Congress

DECEMBER 27, 2013

Innovators at NASA’s Glenn Research Center have developed an automated pulse-and-glide technique using a flywheel energy storage system for on-road vehicles; the technology, which NASA Glenn says can improve fuel economy over existing internal combustion or battery hybrid systems by 40-100%, is available for licensing.

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Fuel Economy Economy Fuel 2009 382

Green Car Congress

SEPTEMBER 12, 2012

Laboratory and in-use fuel economy comparison. higher fuel economy than the conventional tractors, resulting in a 12% reduction in fuel costs for the hybrids. higher fuel economy than the conventional tractors, resulting in a 12% reduction in fuel costs for the hybrids. Source: NREL.

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Fuel Economy Economy Diesel Hybrid 262

Green Car Congress

JULY 17, 2019

Automated control of cars may enable drivers to achieve more fuel savings than if they were completely in charge, according to a new study conducted by the US Department of Energy’s National Renewable Energy Laboratory (NREL) and Volvo Cars.

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Volvo Fuel Fuel Economy Vehicles 207

Green Car Congress

OCTOBER 31, 2022

For example, we will account for regional differences in the total cost of ownership related to charging installation costs, electricity and gasoline costs, temperature effects on fuel economy, and insurance as well as federal and state EV incentives and policies. Refueling patterns based on driver time valuation.

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Michigan Gas-Electric Gas Batteries 199

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.

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Fuel Economy Diesel Economy Engine 150

Green Car Congress

JANUARY 8, 2016

spread between the fuel economy obtained with maximum and minimum rolling resistance tires. At the average 2015 price of regular gasoline, the obtained fuel-consumption extremes result in a $78 difference in the annual cost of gasoline per light-duty vehicle, Sivak said. with a median of 10.28 mpg (RRf at 8.1 mpg (RRf of 12.1

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Fuel Economy Economy Fuel MPG 150

Green Car Congress

MAY 23, 2013

Ricardo released an analysis of two years of on-the-ground testing of the Ricardo-engineered Fuel-Efficient Ground Vehicle Demonstrator (FED) showing that, when compared to the US military’s regularly outfitted M1151 HMMWV (“Humvee”), the FED experienced a 72% improvement in fuel economy. Earlier post.)

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Fuel Economy Economy Fuel Maryland 275

Green Car Congress

AUGUST 19, 2012

A study by a team led by Dr. Dennis Assanis at the University of Michigan suggests that accessing the “thermodynamic sweet spot” in high-efficiency, dilute, boosted gasoline engines has the potential for vehicle fuel economy gains between 23% and 58%. Their paper is published in the International Journal of Engine Research.

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Fuel Economy Gasoline Economy Engine 236

Green Car Congress

MARCH 8, 2018

The all-new 2019 Volkswagen Jetta, unveiled in January at the North American International Auto Show (NAIAS) in Detroit ( earlier post ) will offer improved EPA-estimated fuel economy for the model: 30 mpg city (7.8 L/100km) and 40 mpg (5.88 L/100km) highway, for a combined 34 mpg (6.91

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Fuel Economy 2019 Economy Fuel 199

Green Car Congress

JANUARY 5, 2015

Drive cycle fuel economy for PFI, CDC, and multi-mode RCCI operation. Among their findings were that multi-mode RCCI has the potential to offer greater than 15% fuel economy improvement over a 2009 gasoline PFI baseline over many light-duty driving cycles, despite the lack of complete drive cycle coverage for RCCI mode.

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Fuel Economy Economy Light Fuel 150

Green Car Congress

JUNE 17, 2019

A study by researchers at Tsinghua University in China has concluded that the overall impact of autonomous vehicle deployment on greenhouse gas emissions is not significant in the near-to mid-term. They conducted a comprehensive literature review to support the study. Therefore, a conservative prediction is assumed in this article.

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Fuel Economy Vehicles Fleet Emissions 230

Green Car Congress

DECEMBER 31, 2013

A study by researchers at Oak Ridge National Laboratory earlier this year concluded that speed synchronization through connected vehicle technology can contribute to fuel economy improvement more than 4% for the conventional vehicle fleet and at least 7% for the hybrid electric fleet. The driving schedule links the two.

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Fuel Economy Economy Connect Connected 231

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

DECEMBER 8, 2015

Worldwide, the vehicle fleet is not making enough progress on fuel economy and is failing to reach global targets aimed at reducing CO 2 emissions, cutting oil consumption and improving energy efficiency according to a new report from the Global Fuel Economy Initiative (GFEI) ( earlier post ) released at the Paris COP21 Climate Summit.

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Fuel Economy Economy Climate Global 150

Green Car Congress

APRIL 25, 2013

Vehicle owners have a high interest in technology related to fuel economy, device/application linking for smartphones, wireless connectivity, natural language voice activation and a variety of infotainment features for their next vehicle, according to the new J.D. Power and Associates 2013 US Automotive Emerging Technologies Study.

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Fuel Economy Economy Vehicles Fuel 225

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

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