Planetary Gear

Read all 'fuel efficiency' posts in Planetary Gear
March 5, 2009 9:06 AM PST

How to double world gas mileage by 2050

by Candace Lombardi
  • 31 comments

A new campaign to improve automotive fuel efficiency worldwide by 50 percent by the year 2050 was announced at the Geneva Motor Show on Wednesday.

The Global Fuel Economy Initiative and its "50 by 50" campaign has the backing of leaders of four major international organizations: David Ward, director general of the FIA Foundation; Nobuo Tanaka, the executive director of the International Energy Agency; Jack Short, the secretary general of the International Transportation Forum; and Achim Steiner, the executive director of the United Nations Environment Program (UNEP).

50 by 50 initiative

Car companies, the "50 by 50" report (PDF) says, must develop car fleets that collectively on average get double the gas mileage they get today, and people must buy them, in order to effectively reduce automotive CO2 emissions and oil consumption.

While the group praised all-electric cars and hydrogen fuel cell vehicles it noted that such advanced technology is not immediately necessary, nor a guarantee of carbon dioxide reductions until countries have cleaner electricity production.

"We have to find ways to reconcile legitimate aspirations for mobility, an ambitious reduction in CO2 from cars worldwide, and global economic recovery. There are opportunities to combine support for the industry with measures to achieve governments' environmental and energy policy goals," said a joint statement signed by the leaders of the four organizations.

The Global Fuel Economy Initiative report said a combination of simple steps when collectively applied could have a large impact.

On the technology side it recommended two main things:

  • Develop more hybrids overall, offer more car models in a hybrid version, and when possible offer a plug-in hybrid version.
  • Implement and improve less glamorous but achievable incremental technology for gas and diesel engine cars like weight reduction, better aerodynamics, and improved efficiency in the internal combustion engine.

But technology alone will not get the world to the goal unless it's propelled by political action, according to the report. On the political side, the initiative recommended the following:

  • Present clear data on fuel economy statistics for cars as well as their effect on the global climate, and require automakers to be more transparent on a car model's real-life fuel efficiency.
  • Lobby shareholders with significant stakes in automotive companies on the benefits of selling cars with fuel economy improvements.
  • Convince governments to offer better incentives for companies to develop more fuel-efficient vehicles.
  • Launch campaigns in different countries throughout the world to arm individuals with information on fuel efficiency and their options for car buying.

Taking those steps will save over 6 billion barrels of oil per year by 2050, and reduce carbon dioxide emissions from cars by about 50 percent, according to the report.

"Cutting global average automotive fuel consumption (L/100 km) by 50 percent (i.e. doubling MPG) would reduce emissions of CO2 by over 1 gigatonne (Gt) a year by 2025 and over 2 gigatonnes (Gt) by 2050, and result in savings in annual oil import bills alone worth over USD 300 billion in 2025 and 600 billion in 2050 (based on an oil price of USD 100/bbl)," said the report.

The initiative acknowledges that its goal is ambitious. The report points out that the amount of cars in the world is expected to triple by 2050. It attributes this expected growth to the surge of car ownership in developing nations.

September 26, 2008 5:23 AM PDT

Is physics a key to fuel efficiency?

by Candace Lombardi
  • 4 comments

Correction at 6:20 a.m. PDT: The fuel efficiency figures were transposed and have been corrected. Also, the outcome of the FTC case has been corrected.

Temple University scientists claim to have found a simple way to reduce fuel consumption in cars and trucks.

CNET News obtained an advanced copy of the report, which will be published in the November 19 issue of the American Chemical Society's Energy and Fuels journal.

"....our fuel injection technology based on the new physics principle that proper application of electrorheology can reduce the viscosity of petroleum fuels. A small device is thus introduced just before the fuel injection for the engine, producing a strong electric field to reduce the fuel viscosity, resulting in much smaller fuel droplets in atomization. Because combustion starts at the droplet surface, smaller droplets lead to cleaner and more efficient combustion," says the report by Ronglia Tai, professor at the Department of Physics at Temple University, and head of the project.

The report goes on to say that Tai's group was able to increase the highway fuel efficiency of a Mercedes-Benz 300D with a diesel engine from 32 mpg to 38 mpg.

The scientists at Temple University are not the first to claim that manipulating a fuel's properties is the key to increasing efficiency.There have been many "fuel-saving" gadgets touting this same principle for years.

However, many people are skeptical about whether this method works.

One company--unrelated to Temple University--was even was sued by the Federal Trade Commission for making "deceptive product claims" related to a magnetic "fuel saver." The two parties eventually reached a settlement.

From responses on our boards and from e-mail feedback, it's clear we have a lot of readers knowledgeable in this area. Do you think electrorheology could have a significant impact on fuel efficiency in cars?

  • prev
  • 1
  • next
advertisement

15 sites that went kaput in 2009

Web sites launch all the time, but they also shut their doors. We highlight 15 that bit the dust this year.

Top 10 news stories of the decade

Let the debate begin: Was the iPhone more important than iTunes? Was anything bigger than Google finding a great business model? CNET offers its list of the 10 most important stories of the '00s.

About Planetary Gear

In a software-driven world, it's easy to forget about the nuts and bolts. Whether it's cars, robots, personal gadgetry or industrial machines, Candace Lombardi examines the moving parts that keep our world rotating in her blog, Planetary Gear. A journalist who divides her time between the US and the UK, Lombardi has written for the sites of The New York Times, CNET, USA Today, MSN, ZDNet, Silicon.com and Gamespot. Email her at CandaceLombardi@gmail.com. She is a member of the CNET Blog Network and is not a current employee of CNET.

Add this feed to your online news reader

Planetary Gear topics

Most Discussed

advertisement

Inside CNET News

Scroll Left Scroll Right