Effects of Changing Ambient Humidity and Temperature on the Emissions of Carbureted Two- and Four-Stroke Hand-Held Engines Michigan State Univ

Format:

Conference/Event

Author/Creator:

Brereton, G. J., author.

Conference Name:

1997 SAE International Off-Highway and Powerplant Congress and Exposition (1997-09-08 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1997

Summary:

AbstractEffects of changing ambient humidity and temperature have been studied on the performance and emissions of a hand-held two-stroke and a hand-held four-stroke engine. The main effect of changes in ambient conditions is to change the intake air density and therefore the air-fuel ratio metered by the carburetor. Trends in the effects of humidity and temperature on emissions are predicted reasonably well by theoretical thermodynamic models. They suggest an improved correction for the dependence of NOx on ambient conditions, as a function of both humidity and operational air-fuel ratio, which appears to collapse NOx production data better than the existing KH correction factor. They also suggest a simple procedure for tuning engines to design air-fuel ratios using the measured exhaust-gas %CO, which takes into account the prevailing ambient conditions

Notes:

Vendor supplied data

Publisher Number:

972707

Access Restriction:

Restricted for use by site license