Further Improvements on a HC Emissions Model: Partial Burn Effects PUC Minas

Format:

Conference/Event

Author/Creator:

Sodré, J.R., author.

Conference Name:

International Congress & Exposition (1999-03-01 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

An existing hydrocarbon emissions model has been improved to consider partial burn effects. The model previously considered only the top land piston-ring crevice and the oil film absorption/de-sorption phenomenon as hydrocarbon emissions sources, giving incorrect predictions for conditions in which incomplete combustion occurs. The model now shows the correct trends for the exhaust HC in the presence of partial burn, as has been verified in tests for very lean mixtures and for high engine speeds with retarded ignition. The experiments were carried out in a single-cylinder spark ignition engine, using isooctane as fuel. Results for variations in ignition timing, compression ratio and coolant and lubricant temperature have also been shown, following a better estimate for the wall temperature

Notes:

Vendor supplied data

Publisher Number:

1999-01-0222

Access Restriction:

Restricted for use by site license