Autoignition of Methane and Natural Gas in a Simulated Diesel Environment Sandia National Lab. Livermore, CA

Format:

Conference/Event

Author/Creator:

Fraser, Roydon Andrew, author.

Conference Name:

International Congress & Exposition (1991-02-25 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

This work presents the autoignition delay time characteristics of methane and natural gas under simulated diesel engine conditions. A constant-volume combustion vessel is used for the experiments. Results are presented for the pressure and temperature ranges of 5 to 55 atm and 600 to 1700 K, respectively. Comparisons are then made with autoignition data for methanol, ethanol, isooctane, and n-cetane. Three major trends are observed. First, there is little effect on the autoignition delay time of natural gas as the vessel pressure is increased from 5 to 55 atm. Second, there is a slight decrease in the autoignition delay time of methane-ethane gas mixtures as the concentration of ethane is increased. Third, the autoignition delay time of natural gas is strongly dependent on temperature and continually decreases with increasing temperature. From a pragmatic point of view, it is shown that the use of methane or natural gas as a compression-ignited diesel fuel is impractical in a conventional diesel engine due to the high temperature of between 1200 to 1300 K needed to reduce the autoignition delay time to practical values ( 2 ms)

Notes:

Vendor supplied data

Publisher Number:

910227

Access Restriction:

Restricted for use by site license