Green Car Reports

DECEMBER 27, 2022

Plug-in hybrids only achieve their maximum emissions benefit when they are actually plugged in daily, and that isn't happening as often as regulators who set emissions rules assume, according to a new study from the International Council on Clean Transportation (ICCT).

Plug-in 191

Plug-in Plug PHEV Fuel Economy 191

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.

Climate 348

Climate Carbon Engine Fuel Economy 348

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 313

Fuel Economy Economy Cost Of Fuel 313

Green Car Congress

FEBRUARY 22, 2018

Their study is publishedin the ACS journal Environmental Science & Technology. Top: Gravimetric PM mass, PM mass calculated based on the IPSD method, black carbon, and EC/OC emissions over the LA92 cycle. Bottom: Total particle-phase PAH emissions, expressed in ng/mile, for both test vehicles over the LA92 cycle. Yang et al.

Gasoline 253

Gasoline Emissions Engine Fuel Economy 253

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.

Fuel Economy 150

Fuel Economy Economy Design Fuel 150

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.

Fuel Economy 288

Fuel Economy MIT Fuel Tax Economy 288

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.

Purchase 220

Purchase Fuel Economy Fuel Cash For Clunkers 220

Green Car Congress

AUGUST 31, 2018

A new study on ultra-low emission natural gas heavy-duty engines found that the new Cummins-Westport 11.9-liter liter engine achieved California’s lowest smog-forming emissions standard, and maintained those emissions during all types of driving. Cycle averaged NO x emissions for the ISX12N 400 equipped truck.

Emissions 210

Emissions Engine Gas California 210

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.

Fuel Economy 210

Fuel Economy Economy China Range 210

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. A long-term plan for AVs may have a better result.

Fuel Economy 230

Fuel Economy Vehicles Fleet Emissions 230

Green Car Congress

JULY 11, 2018

A “well-to-wheel” life cycle assessment (LCA) by a team from synthetic fuels producer Greyrock ( earlier post ), and the National Renewable Energy Laboratory (NREL) has determined the potential reduction of greenhouse gases and criteria pollutant emissions from the use of synthetic fuels directly converted from flare gas.

Pollution 258

Pollution Gas Emissions Fuel 258

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. Where, when and for whom are EVs most cost-effective?

Michigan 199

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.

Fuel Economy 150

Fuel Economy Diesel Economy Engine 150

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.

Fuel Economy 150

Fuel Economy Chicago Economy Standards 150

Green Car Congress

APRIL 23, 2019

A new study carried out by University College Dublin (UCD) academics has found that under typical Irish commuting conditions, the Toyota Prius IV (fourth-generation) hybrid ( earlier post ) drives in zero emissions mode (ZEV) for significantly more than half (62%) of the time and more than 40% (40.4%) of the distance covered.

Prius 191

Prius Ireland Universal Emissions 191

Green Car Congress

JULY 21, 2021

This is the first published study identifying the demographic characteristics of gasoline superusers and calling for EV incentive programs and other policies to focus on maximizing gasoline displacement. Consumption would be calculated by using total miles driven by the current owner, years owned, and the EPA fuel economy rating.

Gasoline 397

Gasoline St. Louis Emissions Carbon 397

Green Car Congress

NOVEMBER 7, 2017

A team at the University of Michigan Transportation Research Institute (UMTRI) study has assessed the relative amounts of greenhouse-gas emissions from driving a battery-electric vehicle (BEV) compared with greenhouse-gas emissions from driving a traditional gasoline-powered vehicle in different countries of the world.

Emissions 150

Emissions Albania Botswana MPG 150

Green Car Congress

APRIL 17, 2018

Researchers at Jilin University in China report in a papaer in the journal Fuel that coolant temperature in a gasoline direct-injection (GDI) engine under idle has a critical effect on particulate number (PN) emissions and that optimizing other operating parameters will further reduce PN emissions.

Emissions 186

Emissions Engine Fuel Economy Fuel 186

Green Car Congress

FEBRUARY 24, 2011

Criteria emissions by drive cycle. The team found that the gasoline hybrid electric (gHEV) trucks produced substantially reduced tailpipe emissions during all drive cycles tested in the laboratory when compared to conventional diesel vehicles. Influence of route kinetic intensity on fuel economy. Source: Barnitt 2011.

Fuel Economy 186

Fuel Economy Economy Gasoline Diesel 186

Green Car Congress

NOVEMBER 11, 2016

The European Union (EU) recently adopted CO 2 emissions mandates for new passenger cars, requiring steady reductions to 95 gCO 2 /km in 2021. We argue that assessment of the performance of the EU targets and alternatives should account for interactions of the transport sector with other energy sectors and with other parts of the economy.

Standards 218

Standards Emissions CO2 Europe 218

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.

Fuel Economy 150

Fuel Economy Economy Light Fuel 150

Green Car Congress

NOVEMBER 9, 2017

PM emissions from current vehicles in Beijing could be reduced by approximately 19% by simply blending 20% synthetic diesel with currently available diesel, according to a new study by Tsinghua University, the Desert Research Institute in Nevada and Greyrock Energy, a developer of gas-to-liquids technology.

Diesel 150

Diesel Emissions Gas Sacramento 150

Green Car Congress

JULY 2, 2021

Although heavy vehicles comprise just 4% of all on-road vehicles, they are responsible for more than 20% of all transportation-related fuel consumption and greenhouse gas emissions. Future reductions in petroleum use and carbon emissions will rely heavily upon improved heavy vehicle freight efficiency.

Fuel 395

Fuel Vehicles Wind Fuel Economy 395

Green Car Congress

FEBRUARY 5, 2016

A study of emissions from gasoline direct injection (GDI) vehicles in an urban near-road environment in Toronto over a wide range of weather conditions (February 2014 to January 2015) found that—other than for NO x and CO—the GDI engines had elevated emissions compared to the Toronto fleet. m from the roadway.

Environment 150

Environment Emissions Exhaust 2014 150

Green Car Congress

JANUARY 18, 2013

Huff Fuels, Engines and Emissions Research Center, Oak Ridge National Laboratory. 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

Fuel Economy 326

Fuel Economy Economy Fuel MPH 326

Green Car Congress

AUGUST 19, 2013

The study found that the highest-emitting 10% of gasoline vehicles are now responsible for the overwhelming majority of running CO, NMHC, and NO x. However, they also found that decreases in emissions of these pollutants appear to be slowing down and may have leveled off. unmeasured or not reported) from ambient air studies.

Emissions 247

Emissions Los Angeles Motor Motors 247

Green Car Congress

AUGUST 19, 2021

We evaluate life cycle greenhouse gas (GHG) emissions for automated suburban ground delivery systems consisting of a vehicle (last-mile) and a robot (final-50-feet). In each scenario, they calculated the greenhouse gas emissions, or the carbon footprint, for each package delivered. blue symbol). The ICEV results from Stolaroff et al.

Miles 221

Miles Carbon Ford Vehicles 221

Green Car Congress

SEPTEMBER 20, 2013

Although a lightweight steel vehicle has a lower production phase environmental impact, those initial gains are erased by higher energy use and carbon emissions during the steel vehicle’s use phase, the study found. Source: Sujit Das, ORNL. Click to enlarge. Source: Sujit Das, ORNL. Click to enlarge. —Sujit Das. Click to enlarge.

Emissions 281

Emissions Vehicles CO2 SUV 281

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 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

Fuel Economy 210

Fuel Economy Economy Fuel Price 210

Green Car Congress

OCTOBER 1, 2020

A new study by researchers at the University of Toronto has found that current US policies are insufficient to remain within a sectoral CO 2 emission budget for light-duty vehicles that is consistent with preventing more than 2?°C GtCO 2 (28% of the projected 2015–2050 light-duty vehicle fleet emissions). C global warming.

Climate Change 243

Climate Change Fleet Climate Vehicles 243

Green Car Congress

SEPTEMBER 29, 2010

In a presentation at the US Department of Energy’s 2010 Direction in Engine-Efficiency and Emissions Research Conference in Detroit (DEER), Cisternino described the results of an internal study that used both testbed experimental engine work as well as vehicle tests using an Opel Corsa equipped with a BAS-enhanced 1.3-liter

Fuel Economy 225

Fuel Economy Diesel GM Emissions 225

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. liter V8 by operating using Dynamic Skip Fire.

Fuel Economy 150

Fuel Economy Economy GM GMC 150

Green Car Congress

SEPTEMBER 22, 2009

A study by researchers at UC Davis suggests that a properly designed vehicle scrappage (i.e., Cash for Clunkers”) program could maximize greenhouse gas emissions savings by using fuel-economy based eligibility requirements rather than age-based requirements. Earlier post.). Allan et al.

Cash For Clunkers 186

Cash For Clunkers Fuel Economy Scrappage Economy 186

Green Car Congress

DECEMBER 23, 2013

FTP cycle-weighted tailpipe emissions of N 2 O, NO x , and the sum of NMOG and NO x. The minimum in NO x and NMOG emissions for midlevel ethanol blends points to future opportunities for emission reductions from FFVs. Credit: ACS, Hubbard et al. Click to enlarge. E40); and the new range for high-level ethanol blends (E55, E80).

Emissions 294

Emissions Ford Exhaust Engine 294

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.

Fuel Economy 150

Fuel Economy Economy Climate Global 150

Green Car Congress

NOVEMBER 22, 2012

trillion) through to 2050 and can help cut the world’s road transport energy use and CO 2 emissions by nearly half in that same time, by improving vehicle fuel economy, according to an opinion paper recently published by the Commonwealth Advisory Bureau (CAB) and sponsored by the Global Fuel Economy Initiative (GFEI).

Fuel Economy 246

Fuel Economy Economy Oil Trinidad 246

Green Car Congress

DECEMBER 23, 2009

UPS van fuel economy comparison. UPS’ first-generation diesel hybrid delivery vans improved the on-road fuel economy by 28.9% NREL is planning a second-generation study for 2010 to look at more advanced versions of the Eaton hybrid now in operation within the UPS fleet. Source: Lammert 2009. Click to enlarge.

Fuel Economy 210

Fuel Economy Economy Eaton Hybrid 210