Effect of Combustion Chamber Surface Temperature on Exhaust Hydrocarbon Concentration Research Laboratories, General Motors Corporation

Format:

Conference/Event

Author/Creator:

Wentworth, J. T., author.

Conference Name:

International Mid-Year Meeting (1971-06-07 : Montreal, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1971

Summary:

The relationship between surface temperature and exhaust hydrocarbon concentration was explored by installing surface thermocouples at three locations in the combustion chamber of a single-cylinder engine. Coolant temperature, coolant passage surface scale, and ethylene glycol in the coolant affected exhaust hydrocarbon concentration through changes in surface temperature. As power output increased, combustion chamber surface temperature rose, and exhaust hydrocarbon concentration fell. The increase in surface temperature accounted for about 43% of the decrease in hydrocarbon concentration. The reason for the other 57% of the decrease is unknown, but it may have been caused by increasing gas temperatures in the quench zone.Increasing surface temperature by engine modification would be expected to have adverse effects on engine octane requirement, volumetric efficiency, and oil oxidation

Notes:

Vendor supplied data

Publisher Number:

710587

Access Restriction:

Restricted for use by site license