Featured Research

from universities, journals, and other organizations

Engine technology on the road to meeting emissions standards

Date:
October 16, 2013
Source:
American Chemical Society
Summary:
An engine design appearing under the hoods of many new cars and light trucks today is close to meeting the latest pollution standards that will require vehicles to emit fewer harmful particles over their lifetimes, scientists are reporting.

An engine design appearing under the hoods of many new cars and light trucks today is close to meeting the latest pollution standards that will require vehicles to emit fewer harmful particles over their lifetimes, scientists are reporting. The new study on emissions from gasoline direct injection (GDI) technology appears in the ACS journal Environmental Science & Technology.

Related Articles


Matti Maricq and colleagues explain that to meet new regulations, vehicle manufacturers need to make cars both more fuel-efficient and less polluting, which can be a difficult engineering challenge. In 2012, California approved standards to reduce emissions from passenger cars to 3 milligrams, or a millionth of an ounce, per mile over the 2017-2021 automobile model years. Particulate matter in emissions is associated with health problems, such as asthma and other lung conditions.

The U.S. Environmental Protection Agency has proposed the same target and expects it to remain consistent for 150,000 miles of a vehicle's lifetime. In the meantime, car manufacturers have been putting more cars with GDI technology, which boosts fuel efficiency by injecting gasoline straight into a vehicle's combustion chamber, on the market. But no one had looked at the emissions picture over the lifetime of these fuel-efficient vehicles to see if GDI cars can also meet the new particulate matter standards.

They tested the particle emissions from two GDI vehicles. They found in these examples that the emissions hovered near or below the limit set by the new California and EPA standards over a lifetime of 150,000 miles.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. Matti Maricq, Joseph J. Szente, Jack Adams, Paul Tennison, Todd Rumpsa. Influence of Mileage Accumulation on the Particle Mass and Number Emissions of Two Gasoline Direct Injection Vehicles. Environmental Science & Technology, 2013; 47 (20): 11890 DOI: 10.1021/es402686z

Cite This Page:

American Chemical Society. "Engine technology on the road to meeting emissions standards." ScienceDaily. ScienceDaily, 16 October 2013. <www.sciencedaily.com/releases/2013/10/131016112809.htm>.
American Chemical Society. (2013, October 16). Engine technology on the road to meeting emissions standards. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2013/10/131016112809.htm
American Chemical Society. "Engine technology on the road to meeting emissions standards." ScienceDaily. www.sciencedaily.com/releases/2013/10/131016112809.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Science & Society News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

After Sony Hack, What's Next?

After Sony Hack, What's Next?

Reuters - US Online Video (Dec. 19, 2014) The hacking attack on Sony Pictures has U.S. government officials weighing their response to the cyber-attack. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Spokesman: 'NORAD Ready to Track Santa'

Spokesman: 'NORAD Ready to Track Santa'

AP (Dec. 19, 2014) Pentagon spokesman Rear Adm. John Kirby said that NORAD is ready to track Santa Claus as he delivers gifts next week. Speaking tongue-in-cheek, he said if Santa drops anything off his sleigh, "we've got destroyers out there to pick them up." (Dec. 19) Video provided by AP
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Science & Society

Business & Industry

Education & Learning

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins