A Comparison of the Emissions from Gasoline vs. Compressed Natural Gas for an Electronic Fuel Injected Two Cylinder, Four-Stroke Engine Rochester Institute of Technology

Format:

Conference/Event

Author/Creator:

Gautam, Gautam, author.

Contributor:

Deminco, Chris M.

Garrick, Robert

Hannum, Philip E.

Lee, James Howard

Villasmil, Larry A.

Conference Name:

2012 Small Engine Technology Conference & Exhibition (2012-10-16 : Madison, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

Natural gas is a viable alternative to gasoline and diesel fuelbecause it is a clean burning fuel that is available from a largedomestic reserve through a mature infrastructure. The heavydependence of the small engine sector on oil, much of which isimported from foreign countries and the small engine sector'snegative impact on the air quality in urban areas are two pervasiveproblems that can be helped by using Compressed Natural Gas (CNG)as a small engine fuel. In addition, CNG is typically over 80%methane, which is produced by the decay of organic material, sowhile natural gas is not renewable its use enables much of theinfrastructure required for a methane-based renewable energysystem.In order to determine the emissions benefit of using CNG ascompared to gasoline in a small engine, a 750 cc 90 degree V Twinport-fuel-injected production engine rated at 29 horsepower (HP),designed and built by Kohler Incorporated This engine was initially fueledby gasoline, but was converted to a port-fuel-injected CNG engine.The engine emissions measured include total hydrocarbons (HC),carbon monoxide (CO), carbon dioxide (CO₂), oxides of nitrogen(NOx), oxygen (O₂), and intake CO₂, using both diluted and rawexhaust gas emissions. This paper will briefly describe themodifications made to the engine to operate on CNG (fuel injectionsystem, engine calibration...), the primary focus, however, will bethe comparison of the emissions data obtained for both the originalengine configuration, gasoline-fueled, and the modifiedconfiguration, CNG-fueled. While this paper will focus on theemissions benefit of using CNG and CNG's effect on engineperformance parameters, this paper will also review the sensitivityof the engine to changes to several engine parameters and theresulting engine emissions

Notes:

Vendor supplied data

Publisher Number:

2012-32-0016

Access Restriction:

Restricted for use by site license