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

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 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

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

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

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.

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Diesel Emissions Gas Sacramento 150

Green Car Congress

SEPTEMBER 4, 2013

The Ricardo-led Advanced Diesel Electric Powertrain (ADEPT) project will apply 48V “intelligent electrification” concepts, mild hybridization and waste heat recovery in a Ford Focus diesel demonstrator. version of its vehicle (a 2009 Ford Focus) but with fuel economy and CO 2 emissions approaching those of a Prius.

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Fuel Economy Diesel Economy Gasoline 239

Green Car Congress

JULY 6, 2013

Life-cycle energy use and GHG emissions normalized with NYCC diesel case (8.06 They also found that the total costs of ownership (TCO) of the electric and diesel trucks are similar. Over an array of possible conditions, the median TCO of electric trucks is 22% less than that of diesel trucks on the NYCC. MJ/t·km and 0.63

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Diesel Georgia Energy Li-ion 361

Green Car Congress

JUNE 28, 2013

TCO for selected gas and diesel vehicles over a 3 year timeframe. Diesel vehicles generally saved owners between $2,000 to $6,000 in total ownership costs during a three to five year period when compared to similar gasoline vehicles, according to data compiled by the University of Michigan Transportation Research Institute (UMTRI).

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Cost Of Diesel Gasoline Vehicles 262

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% Both the Freightliner hybrid model and the conventional model use a Mercedes-Benz MBE 904 four-cylinder diesel engine. greater than the diesel van group’s 10.2

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Fuel Economy Economy Eaton Hybrid 210

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 19, 2013

Drivers of diesel vehicles can save thousands of dollars in total ownership costs compared to similar gasoline vehicles, according to a University of Michigan Transportation Research Institute (UMTRI) study. —UMTRI researcher Bruce Belzowski. Belzowski and UMTRI colleague Paul E.

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Gasoline Diesel Vehicles Fuel Economy 247

Green Car Congress

JULY 9, 2015

Though there are some exceptions to these positive results for some of the diesel versions of vehicles from a total-cost-of-ownership perspective, the overall direction of the results supports the idea that diesel vehicles are competitive within the U.S. Average diesel take rates. Belzowski 2015. Click to enlarge. Model year.

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Cost Of Gasoline Diesel Fuel Economy 150

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 15 kW peak.

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Fuel Economy Diesel GM Emissions 225

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.

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Pollution Gas Emissions Fuel 258

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. Every 1% reduction in drag leads to a 0.45% reduction in fuel use for a heavy vehicle at highway speeds.

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Fuel Vehicles Wind Fuel Economy 395

Green Car Congress

AUGUST 23, 2013

Audi of America introduced four new TDI clean diesel models for the US market this year—the Audi A8, A7, A6, Q5—along with an updated Q7 TDI, all equipped with a second-generation 3.0L V6 TDI diesel engine. ” One of our primary goals and objectives is to level the playing field for clean diesel vehicles.

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Diesel Audi Sale Fuel Economy 366

Green Car Congress

MAY 21, 2010

Strengthening the fuel economy of medium- and heavy-duty trucks could create as many as 124,000 jobs in the US by 2030, with all 50 states experiencing net job growth, according to a new report by the Union of Concerned Scientists (UCS) and CALSTART. per gallon fuel price. per gallon fuel price. per gallon.

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Fuel Economy Economy Fuel Gasoline-Electric 239

Green Car Congress

SEPTEMBER 26, 2013

The study found that TCO for electric and diesel medium-duty urban delivery trucks were similar. Researchers at Georgia Tech have compared medium-duty (MD) electric and diesel urban delivery trucks in terms of life-cycle energy consumption, greenhouse gas (GHG) emissions, and total cost of ownership (TCO). Click to enlarge.

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Georgia Diesel Gas-Electric Electric 268

Green Car Congress

JUNE 12, 2010

Fuel economy was similar between the gHEVs and diesel vehicles, except for the highest kinetic intensity drive cycle where the hybrid exhibited ~20% higher fuel economy. NREL used six similar trucks for the evaluation project: three Azure Dynamics Balance hybrids, and three diesels (Freightliner MT-45).

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Fuel Economy Economy Gasoline Diesel 199

Green Car Congress

FEBRUARY 15, 2018

The US Department of Energy (DOE) has released two studies from the Co-Optimization of Engines & Fuels initiative ( Co-Optima ) ( earlier post ). These new blendstocks, co-optimized with advanced gasoline engines, show potential to improve passenger vehicle fuel economy by 10%. Blendstocks. Efficiency Merit Function.

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Engine Gasoline-Electric Fuel Economy Gasoline 199

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 Most heavy-duty vehicles on roads today are diesel-powered and represent one of the largest sources of NO x emissions and fuel consumption in North America. Source: UCR. Johnson performed similar testing on an 8.9-liter

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Emissions Engine Gas California 210

Green Car Congress

JANUARY 28, 2011

A new Carnegie Mellon University study released at the Washington Auto Show finds that for passenger cars, aadvanced vehicles with higher fuel economy—i.e, turbocharged direct injection diesels or hybrids—retain more value than a paired conventional vehicle—i.e.,

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Gasoline Diesel Price Hybrid 231

Green Car Congress

AUGUST 2, 2018

The study, published in the journal Energy Policy , presents an empirical analysis of the effects of temperature on Direct Current Fast Charger (DCFC) charging rate and discusses the impact of such effects on wider adoptions of electric vehicles (EVs).

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Charging Idaho Taxi Gasoline-Electric 260

Green Car Congress

JUNE 1, 2017

and L9 engine platforms are compatible with 100% renewable diesel fuels meeting the EN 15940 specification (paraffinic diesel fuel from synthesis or hydrotreatment). and L9 platforms and all vintages are approved to use paraffinic diesel fuels in North America. Cummins Inc. announced that the B4.5,

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Diesel Engine Fuel North America 186

Green Car Congress

MAY 29, 2010

According to Harris Interactive’s 2010 AutoTECHCAST study, conducted between 6-26 April 2010, there is currently greater demand among US vehicle owners for technologies that deliver improved fuel economy of existing gasoline-driven engines at a lower initial cost, rather than for higher-priced alternative-fueled engines.

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Fuel Economy Gasoline-Electric Engine Fuel 199

Green Car Congress

FEBRUARY 15, 2018

A team of researchers from the Energy and Transportation Science Division at the Department of Energy’s Oak Ridge National Laboratory is studying soot and ash collection and removal in particulate filters with neutron imaging, a technique sensitive enough to detect fine layers of material. —Todd Toops, ORNL.

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Gasoline Diesel Fuel Economy 2007 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.

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Prius Ireland Universal Emissions 191

Green Car Congress

FEBRUARY 15, 2015

A newly published study by researchers from Sandia National Laboratories (Askin et al. presents a parametric analysis of factors that can influence advanced fuel and technology deployments in US Class 7–8 trucks through 2050. Among their findings were: Conventional diesel trucks will dominate the market through 2050.

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Fuel Economy China Fuel Europe 150

Green Car Congress

SEPTEMBER 24, 2014

However, they also noted, high PTW efficiencies and the moderate fuel economies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. The study investigated the the WTW energy and emissions from the use of natural gas in CNGVs with a range of CNGV fuel economy and natural gas compressor efficiency.

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Gas-Electric Gas Fuel Economy PHEV 345

Green Car Congress

APRIL 17, 2018

Compared to port-fuel injection (PFI) engines, gasoline direct injection (GDI) engines show a significant (5–15%) improvement in fuel economy, especially because of higher volumetric efficiency and higher knock resistance. GDI engines provide higher specific power output relative to PFI.

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Emissions Engine Fuel Economy Fuel 186

Green Car Congress

JANUARY 15, 2012

The researchers also found that some of the high temperature modes resulted in diesel particulate filter (DPF)-out accumulation mode (between 50 and 200 nm) particle concentrations an order of magnitude greater than typical background PM concentrations. The study by Thiruvengadam et al. Credit: ACS, Thiruvengadam et al.

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Exhaust Diesel West Virginia 2007 218

Green Car Congress

AUGUST 1, 2011

Comparing fuel consumption with diesel, 50D/50E and 50D/50E + 7% DME. In a study published in the ACS journal Energy & Fuels , M. Emulsification of diesel with ethanol is one of the possible approaches to improve fuel economy and reduce emissions of pollutants from diesel engines. Resources.

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Diesel Emissions Fuel 2011 210

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. The majority of the emissions is caused by diesel cars.

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Europe Diesel Emissions Pollution 150

Green Car Congress

NOVEMBER 17, 2013

A poll conducted online by Harris Interactive on behalf of Audi of America found that a majority of American drivers would support government initiatives aimed at spurring clean diesel vehicle sales in the US. But, we argue that diesel needs an even playing field set by state and federal governments. We need to level the playing field.

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Audi Diesel Sale Available Today 246

Green Car Congress

MARCH 9, 2016

Rice University researchers have determined a more effective way to use natural gas to reduce climate-warming emissions would be in the replacement of existing coal-fired power plants and fuel-oil furnaces rather than burning it in cars and buses. However, residential uses and exports of natural gas were not considered in those comparisons.

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Gas-Electric Gas Transportation Coal 150

Green Car Congress

JANUARY 19, 2014

A new study finds that as much as 20–30% of the number of vehicle engine exhaust particles larger than 3 nm may be formed during engine braking conditions—i.e., during decelerations and downhill driving while the engine is not fueled. With direct injection engines, the fuel consumption during engine braking is zero.

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Exhaust Engine Fuel Greece 319