New device cuts gas engine air pollution

Aug 23, 2006

Two U.S. scientists say they've developed a light-weight, relatively inexpensive way of reducing unburned hydrocarbon air pollutants from gasoline engines.

Researchers Marcus Ashford and Ronald Matthews of the University of Alabama say when you start your car on a hot summer day, barely 20 percent of the gasoline injected into the engine vaporizes and powers the engine. The rest becomes part of the engine's emissions of unburned hydrocarbon air pollutants.

On a cold winter day, they said, the waste and pollution is much worse. Multiply by 230 million cars in the United States and the picture is much, much worse.

Their so-called on-board distillation system targets the root cause of such waste: gasoline's relatively low volatility, or ease in changing from a liquid to a gas. High-volatility components are separated from gasoline and stored for use after startup, until the engine and other components warm and become more efficient.

The system would add about five pounds to a car's weight and less than $100 to its cost when in full production, the scientists estimate.

The research is to appear in the Sept. 15 issue of the journal Environmental Science & Technology.

Copyright 2006 by United Press International

Explore further: Researchers use passive UHF RFID tags to detect how people interact with objects

Related Stories

Pro-Saudi hackers seize Iran TV's social media accounts

3 hours ago

Hackers took over the social media accounts of Iran's Al-Alam television Sunday and posted material supportive of the Saudi-led air war against Iran-backed rebels in Yemen, the Arabic-language channel said.

Subzero learning environment enabling avalanche research

3 hours ago

A recent article about avalanche research in Popular Science referred to the effort toward knowing more about the avalanche in its subhead as "snowslide science," and the article was about the interesting lab wo ...

Recommended for you

Intellectual property in 3D printing

Apr 16, 2015

The implications of intellectual property in 3D printing have been outlined in two documents created for the UK government by Bournemouth University's Dinusha Mendis and Davide Secchi, and Phil Reeves of Econolyst Ltd.

World-record electric motor for aircraft

Apr 16, 2015

Siemens researchers have developed a new type of electric motor that, with a weight of just 50 kilograms, delivers a continuous output of about 260 kilowatts – five times more than comparable drive systems. ...

Space open for business, says Electron launch system CEO

Apr 15, 2015

Space, like business, is all about time and money, said Peter Beck, CEO of Rocket Lab, a US company with a New Zealand subsidiary. The problem, he added, is that, in cost and time, space has remained an incredibly ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.