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

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

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.

Fuel Economy 350

Fuel Economy Economy Hybrid Diesel 350

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 150

Fuel Economy Diesel Economy Engine 150

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. —Whitefoot et al.

Fuel Economy 150

Fuel Economy Economy Design Fuel 150

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.

Engine 199

Engine Gasoline-Electric Fuel Economy Gasoline 199

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 253

Gasoline Emissions Engine Fuel Economy 253

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%. —Lavoie et al. —Lavoie et al. Martz and Dennis N.

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Fuel Economy Gasoline Economy Engine 236

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

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

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.

Fuel Economy 257

Fuel Economy Economy Fuel EPA 257

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

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%.

Fuel Economy 150

Fuel Economy Economy Fuel Vehicles 150

Green Car Congress

DECEMBER 30, 2013

Prototype low-viscosity ionic liquid-additized engine oil demonstrated a 2% improved fuel economy compared to Mobil 1 5W-30 engine oil (3.93% over the 20W-30 baseline oil) in standard fuel efficiency engine dynamometer tests. However, most ILs have little or no solubility (?1%)

Fuel Economy 369

Fuel Economy Oil Economy Engine 369

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. The ISX12N 400 NG engine met and exceeded the target NO x emissions of 0.02

Emissions 210

Emissions Engine Gas California 210

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 starting point of engine braking is marked by a vertical green line, and the end point is marked by a vertical red line.

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Exhaust Engine Fuel Greece 319

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

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Fuel Economy Economy Fuel MPH 326

Green Car Congress

OCTOBER 31, 2022

Our research partnership with RBC will enable us to conduct a more in-depth analysis of EV costs in comparison with internal combustion engine vehicles by considering vehicle type, user behavior, and where the vehicle is purchased and operated. Gregory Keoleian, Director of the Center for Sustainable Systems at the University of Michigan.

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Michigan Gas-Electric Gas Batteries 199

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

JANUARY 20, 2020

A team from the Beijing Institute of Technology and Beiqi Foton Motor are proposing a performance optimization strategy for the Atkinson cycle gasoline engine, which is playing a key role in the development of hybrid electric vehicles due to its greater fuel economy than a conventional Otto cycle engine. —Niu et al.

Engine 150

Engine Hybrid Fuel Economy Economy 150

Green Car Congress

JANUARY 5, 2015

Drive cycle fuel economy for PFI, CDC, and multi-mode RCCI operation. Their paper is published in the International Journal of Engine Research. RCCI is a dual-fuel combustion technology developed by Dr. Rolf Reitz and colleagues at the University of Wisconsin-Madison Engine Research Center laboratories.

Fuel Economy 150

Fuel Economy Economy Light Fuel 150

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 Matthias Erb, Chief Engineering Officer, North American Region, Volkswagen. L/100km) and 40 mpg (5.88

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Fuel Economy 2019 Economy Fuel 199

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. Click to enlarge.

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Emissions Engine Fuel Economy Fuel 186

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. Earlier post.) Earlier post.).

Fuel Economy 150

Fuel Economy Economy GM GMC 150

Green Car Congress

NOVEMBER 1, 2013

For the target market (the Asian scooter market), the low NO x capability of the Pinnacle engine provides a significant cost benefit to manufacturers. Further, Pinnacle noted, recently developed hardware designed for additional lean limit extension is under test. When the entire vehicle costs around $700, that’s a significant difference.

Fuel Economy 231

Fuel Economy Economy Engine Fuel 231

Green Car Congress

AUGUST 10, 2015

Researchers at Tsinghua University in China are studying the effects of Dual-Fuel Spark Ignition (DFSI) combustion fueled with different alcohols and gasoline. Alternatively, in the second study, gasoline–alcohol DFSI is based on PFI of gasoline and DI of alcohols.). —Liu et al.

Gasoline 150

Gasoline Fuel Engine Fuel Economy 150

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. Advanced engines.

Fuel Economy 210

Fuel Economy Economy Fuel Price 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.

Fuel Economy 199

Fuel Economy Economy Fuel Eaton 199

Green Car Congress

APRIL 19, 2013

A study by a team from Ford Motor Company and AVL has concluded that a mid-level ethanol blend—greater than E20 but less than E40—appears to be attractive as a long-term future fuel for the US for use in engines optimized for the higher octane blend. In the face of increased regulatory stringency (e.g., Earlier post.)

Engine 253

Engine Fuel Ford Future 253

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

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. mpg in 2011.

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Engine EPA Emissions Power 268

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 239

Fuel Economy Diesel Economy Gasoline 239

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.

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Fuel Vehicles Wind Fuel Economy 395

Green Car Congress

MARCH 16, 2012

The city and highway fuel economy ratings for the new Ford Police Interceptors (PI) have increased by 25% over the retired Crown Victoria. A recent study of police car use in Ottawa, Canada, showed the average police vehicle idles for up to 6.7 Fuel economy test results from the LA Sheriff’s Department 2012 evaluations.

Fuel Economy 231

Fuel Economy Economy Tahoe Ford 231

Green Car Congress

MARCH 16, 2012

The city and highway fuel economy ratings for the new Ford Police Interceptors (PI) have increased by 25% over the retired Crown Victoria. A recent study of police car use in Ottawa, Canada, showed the average police vehicle idles for up to 6.7 Fuel economy test results from the LA Sheriff’s Department 2012 evaluations.

Fuel Economy 225

Fuel Economy Economy Tahoe Ford 225

Green Car Congress

MARCH 30, 2022

Hyundai Motor Group will collaborate with the Saudi Arabian Oil Company (Aramco) and King Abdullah University of Science and Technology (KAUST) jointly to research and develop an advanced fuel for an ultra lean-burn, spark-ignition engine that aims to lower the overall carbon dioxide emissions of a vehicle.

Hyundai 448

Hyundai Motor Motors Motoring 448

Green Car Congress

FEBRUARY 24, 2011

On a drive cycle representing routes with frequent stops and accelerations, the gHEV trucks exhibited a 20% improvement in fuel economy. On drive cycles representing routes with fewer stops and accelerations, the gHEV trucks demonstrated similar fuel economy to the diesels. gasoline engine and Azure Dynamics, Inc.

Fuel Economy 186

Fuel Economy Economy Gasoline Diesel 186