Accession Number:

AD0769593

Title:

A Predictive Study of the Occurrence of Meteorological Conditions Contributing to Automotive Carburetor Icing.

Descriptive Note:

Final rept.,

Corporate Author:

COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• Doner,John P.

Report Date:

1973-09-01

Pagination or Media Count:

58.0

Abstract:

Meteorological conditions contributing to automotive carburetor icing were examined for 338 first order weather stations located in the continental U.S. and Alaska. Automotive carburetor icing, resulting in poor warm-up and stalling, occurs due to several factors namely, critical engine and carburetor design, fuel volatility, and the occurrence of specific meteorological conditions. For this study the frequency of the simultaneous occurrence of an air temperature between 35 to 45F and a relative humidity greater than 74 percent was determined for each hour of the day at each weather station. The highest hourly percent occurrences are displayed in isopleth maps for each month, with their intended application for defining geographical regions where automotive carburetor icing is likely to occur. Author

Descriptors:

• *ICE FORMATION
• *INTERNAL COMBUSTION ENGINES
• CARBURETORS
• ENGINE FUEL SYSTEMS COMPONENTS
• INLETS
• ICE
• METEOROLOGICAL DATA
• HUMIDITY
• GASOLINE
• VOLATILITY
• WEATHER STATIONS
• METEOROLOGICAL CHARTS

Subject Categories:

• Meteorology
• Fuels
• Reciprocating and Rotating Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE