Fuel Economy, Pollution and Statistics

CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

JULY 18, 2022

The test fleet showed statistically significant effects for some pollutants, but not for others. NO x emissions, a target pollutant of concern for this program, did not show any statistically significant difference between the fuels for the FTP nor for each individual FTP phase.

Fuel Economy

Fuel Economy Economy Fuel Ozone

UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

Green Car Congress

JANUARY 2, 2019

Their paper is published in the ACS journal Energy & Fuels. The researchers used four fuels: a baseline US EPA Tier 3 E10 fuel; one E10 fuel with higher aromatics content than the baseline E10; an E30 fuel that was splash-blended with the Tier 3 E10; and an E78 fuel.

Pollution

Pollution Fuel Vehicles Emissions

WUSTL study finds use of air conditioning reduces in-car pollution

Green Car Congress

AUGUST 11, 2017

Traffic is a major source of harmful pollutants; daily peak exposures tend to occur near roadways or while traveling—or being stuck—on them. That gave them rare, real-world look at pollutant exposure. With windows closed, the pollutants took longer to enter the vehicle cabin, but also longer to exit it.

Pollution

Pollution St. Louis Cars Washington

Study finds air quality models significantly underestimate traffic as source of NOx in Europe

Green Car Congress

JUNE 1, 2017

It has been a challenge to determine how much each polluter contributes to the emission output. However, the amount of pollutant emissions that vehicles emit on a daily basis depends on numerous factors, for example on individual driving behavior. We record 36,000 data points per hour. —Thomas Karl.

Europe

Europe Diesel Emissions Pollution

Study finds that replacement programs that reduce vehicle lifetime can result in increased lifecycle CO2 emissions

Green Car Congress

FEBRUARY 1, 2011

Empirical results also revealed that even if the fuel economy of less fuel-efficient ordinary passenger vehicles were improved to levels comparable with those of the best available technology, i.e. hybrid passenger cars currently being produced in Japan, total CO 2 emissions would decrease by only 0.2%. —Kagawa et al.

Emissions

Emissions CO2 2000 Vehicles

ICCT: gap between official and real-world fuel economy figures in Europe reaches ~38%; call to implement WLTP ASAP

Green Car Congress

SEPTEMBER 28, 2014

The gap between official and real-world fuel-economy figures in Europe has risen to about 38%, according to a new report published by the International Council on Clean Transportation (ICCT). However, by aggregating large sets of on-road fuel consumption data, clear trends can be observed. Source: ICCT. Click to enlarge.

Fuel Economy

Fuel Economy Europe Economy Fuel

Cooper and Ricardo Unveil 2-Cylinder Engine Family for World Markets

Green Car Congress

JANUARY 11, 2010

This longevity is evidenced by a B10 life of 7,000 hours (the service life for a statistical expectation of 10% attrition) or 250,000 km in a vehicle application. Low cost of ownership was of paramount importance to the design team, and the new engine boasts excellent longevity and ease of service.

Engine

Engine Market Diesel India

High Performance Computing key enabler for accelerating development of high efficiency engines

Green Car Congress

NOVEMBER 5, 2012

Combustion currently provides 85% of our nation’s energy needs and will continue to be a predominant source of energy as fuel sources evolve away from traditional fossil fuels. Achievable advances in engine technology can improve the fuel economy of automobiles by over 50% and trucks by over 30%. Stochastic processes.

Engine

Engine 2001 2012 Fuel

Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

Green Car Congress

MAY 12, 2017

Gasoline direct-injection (GDI) engines have higher fuel economy compared to the more widely used port fuel injection (PFI) engines. Among the findings from the study: For vehicles certified to the same emissions standard, there is no statistical difference of regulated gas-phase pollutant emissions between PFIs and GDIs.

Fleet

Fleet Engine Global Fuel Economy

CRC study finds some adverse results from use of mid-level ethanol blends in MY 2001-2009 engines; DOE and ethanol industry say study significantly flawed

Green Car Congress

MAY 17, 2012

EPA’s decision was based largely on a DOE study of the effects of E15 on durability of catalytic converters, the primary pollution control system in a vehicle. Three main engine wear mechanisms are impacted by ethanol fuels: abrasive wear, adhesive wear and corrosion. Earlier post.)

2001

2001 2009 Engine Industrial

U-M study: Induced driving miles could overwhelm potential energy-saving benefits of connected, self-driving cars

Green Car Congress

APRIL 18, 2019

Higher fuel economy of CAVs will cause the per-mile fuel cost of travel to drop. This, in turn, will induce additional travel that partially offsets the fuel savings of energy efficiency—commonly referred to as a “rebound effect”. Traditionally, time spent driving has been viewed as a cost to the driver.

Connect

Connect Connected Miles Energy

Assessment of US CAFE fuel economy standards finds big savings on fuel and emissions since inception

Green Car Congress

SEPTEMBER 5, 2020

In one of the first comprehensive assessments of the fuel economy standards in the United States, researchers from Princeton University and the University of Tennessee found that, over their 40-year history, the standards helped reduce reliance on foreign oil producers, cut greenhouse gas emissions, and saved consumers money.

Fuel Economy

Fuel Economy Economy Standards Fuel

Using the PHEV (Plug-In Hybrid Electric Vehicle) to Transition Society Seamlessly and Profitably From Fossil Fuel to 100% Renewable Energy

Green Car Congress

JULY 17, 2015

Frank has spent more than 30 years in breakthrough vehicle development, during which he received two world records for vehicle fuel economy, designed nine generations of PHEVs, and was a four-time winner of US DOE Advanced Vehicle Design competitions. Appendix D: Vehicle Driving Statistics. slow charge. References.

PHEV

PHEV Plug-in Renewable Energy

EV Driven

CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

WUSTL study finds use of air conditioning reduces in-car pollution

Study finds air quality models significantly underestimate traffic as source of NOx in Europe

Study finds that replacement programs that reduce vehicle lifetime can result in increased lifecycle CO2 emissions

ICCT: gap between official and real-world fuel economy figures in Europe reaches ~38%; call to implement WLTP ASAP

Cooper and Ricardo Unveil 2-Cylinder Engine Family for World Markets

High Performance Computing key enabler for accelerating development of high efficiency engines

Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

CRC study finds some adverse results from use of mid-level ethanol blends in MY 2001-2009 engines; DOE and ethanol industry say study significantly flawed

U-M study: Induced driving miles could overwhelm potential energy-saving benefits of connected, self-driving cars

Assessment of US CAFE fuel economy standards finds big savings on fuel and emissions since inception

Using the PHEV (Plug-In Hybrid Electric Vehicle) to Transition Society Seamlessly and Profitably From Fossil Fuel to 100% Renewable Energy

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