Featured Research

from universities, journals, and other organizations

Hybrid Buses Operate With Lower Emissions, Greater Fuel Efficiency

Date:
August 2, 2002
Source:
National Renewable Energy Laboratory
Summary:
A recently released study by the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) concludes that hybrid buses operate with lower emissions and greater fuel efficiency than conventional diesel buses.

A recently released study by the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) concludes that hybrid buses operate with lower emissions and greater fuel efficiency than conventional diesel buses.

Related Articles


The year long evaluation of 10 prototype diesel hybrid-electric buses in the Metropolitan Transportation Authority's New York City Transit (NYCT) fleet of 4,489 buses showed that these hybrid buses have a 10 percent higher in-service fuel economy. According to chassis dynamometer emissions testing, the hybrid buses had 36 percent lower oxides of nitrogen and 50 percent lower particulate matter emissions than diesel buses on a central business district cycle.

"Taking the state of the technology into consideration, we think hybrid-electric buses are going to make a very positive impact on our fleet," said Bill Parsley, NYCT's director of research and development. NYCT has awarded contracts for an additional 125 hybrid buses in 2002 and 200 hybrid buses in 2003.

The NREL report, NYCT Diesel Hybrid-Electric Buses: Final Results, summarizes the work completed during the yearlong Transit Bus Evaluation Project to collect fueling, maintenance, performance and emission data from NYCT.

While the hybrid buses have greater fuel economy than diesel buses, maintenance costs were significantly higher due in part to the maturity level of the hybrid propulsion system. These costs are expected to drop as the technology advances.

The evaluation was funded by DOE's Office of Heavy Vehicle Technologies and Office of Technology Utilization's Field Operations Program and managed by NREL. It began after NYCT purchased the prototype diesel hybrid-electric buses from Orion Bus Industries with BAE SYSTEMS' HybriDriveTM propulsion system after the success of an early prototype hybrid bus project.

The final results report and two additional reports related to this Transit Bus Evaluation Project, NYCT Diesel Hybrid-Electric Buses: Program Status Update and NYCT Diesel Hybrid-Electric Buses: Final Data Report, are available through NREL's Alternative Fuels Data Center, http://www.afdc.doe.gov or 1-800-423-1DOE.


Story Source:

The above story is based on materials provided by National Renewable Energy Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

National Renewable Energy Laboratory. "Hybrid Buses Operate With Lower Emissions, Greater Fuel Efficiency." ScienceDaily. ScienceDaily, 2 August 2002. <www.sciencedaily.com/releases/2002/08/020802074242.htm>.
National Renewable Energy Laboratory. (2002, August 2). Hybrid Buses Operate With Lower Emissions, Greater Fuel Efficiency. ScienceDaily. Retrieved April 25, 2015 from www.sciencedaily.com/releases/2002/08/020802074242.htm
National Renewable Energy Laboratory. "Hybrid Buses Operate With Lower Emissions, Greater Fuel Efficiency." ScienceDaily. www.sciencedaily.com/releases/2002/08/020802074242.htm (accessed April 25, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, April 25, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

MINI Shows Off Augmented Reality Glasses

MINI Shows Off Augmented Reality Glasses

AP (Apr. 24, 2015) — MINI showcased its new augmented reality glasses at the Shanghai Auto Show this week, which designers say will make roads safer and allow the driver to see through opaque parts of the car. (April 24) Video provided by AP
Powered by NewsLook.com
3D Food Printing: The Meal of the Future?

3D Food Printing: The Meal of the Future?

AP (Apr. 23, 2015) — Developers of 3D food printing hope the culinary technology will revolutionize the way we cook and eat. (April 23) Video provided by AP
Powered by NewsLook.com
'Safest Bike Ever' Devised by British Entrepreneur

'Safest Bike Ever' Devised by British Entrepreneur

Reuters - Innovations Video Online (Apr. 23, 2015) — A British inventor says his Babel bike is the safest bicycle ever produced. Crispin Sinclair - son of famous British inventor Sir Clive Sinclair - hopes the bike&apos;s safety cage, double seatbelt, and host of other measures will inspire non-cyclists to get in the saddle. Jim Drury went to see it in action. Video provided by Reuters
Powered by NewsLook.com
First Successful Aerial Refueling of a Drone

First Successful Aerial Refueling of a Drone

Reuters - Innovations Video Online (Apr. 23, 2015) — The bat-wing U.S. Navy drone that became the first autonomous airplane to take off and land on an aircraft carrier accomplished yet another milestone on Wednesday, becoming the first unmanned aircraft to undergo aerial refueling. Ben Gruber 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

 

Space & Time

Matter & Energy

Computers & Math

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