Direct-Injected Hydrogen-Methane Mixtures in a Heavy-Duty Compression Ignition Engine University of British Columbia

Format:

Conference/Event

Author/Creator:

McTaggart-Cowan, G.P., author.

Conference Name:

SAE 2006 World Congress & Exhibition (2006-04-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2006

Summary:

A diesel pilot-ignited, high-pressure direct-injection of natural gas heavy-duty single-cylinder engine was fuelled with both natural gas and blends of 10% and 23% by volume hydrogen in methane. A single operating condition (6 bar GIMEP, 0.5 , 800 RPM, 40%EGR) was selected, and the combustion phasing was varied from advanced (mid-point of combustion at top-dead-center) to late (mid-point of combustion at 15°ATDC). Replacing the natural gas with hydrogen/methane blend fuels was found to have a significant influence on engine emissions and on combustion stability. The use of 10%hydrogen was found to slightly reduce PM, CO, and tHC emissions, while improving combustion stability. 23%hydrogen was found to substantially reduce CO and tHC emissions, while slightly increasing NOx. The greatest reductions in CO and tHC, along with a significant reduction in PM, were observed at the latest combustion timings, where combustion stability was lowest. The high hydrogen-content fuel was found to reduce the ignition delay of the gaseous jet by approximately 20%, without influencing the ignition delay of the diesel pilot. The results were generally consistent at all combustion timings tested, and were found to be insensitive to injection pressure

Notes:

Vendor supplied data

Publisher Number:

2006-01-0653

Access Restriction:

Restricted for use by site license