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Show Carburetor Air Filter Keeps Out Much Grit Analysis of the Incombustible deposit de-posit in the cylinder of an auto engine, after the carbon had been burned out, showed It to consist of ordinary sand, clay dust and limestone dust, which had undoubtedly been drawn Into the motor through the carburetor. Aa tha sand Is highly abrasive, It la obviously obvi-ously responsible for most of the wear on pistons, rings and cylinder walla. The entrance of sand and dust Into the carburetor air Intake can be prevented pre-vented by providing a filter of the kind shown In the drawing. This method has been tried out and found highly satisfactory. The apace between the dash and Instrument board was used aa a flltered-alr chamber and waa connected to the carburetor air Intake WTHUMtNT soakd niTtau- I ohamsm Air Filter on Carburetor Keeps Grit Out of Motor. with a length of flexible metal tubing. This space was sealed to prevent air from coming In except through the filter, which was provided In the bottom. bot-tom. It consisted of several layers of closely woven cloth, with a piece of wire screen to make the filter more rigid. After a day's run a panful of dust was brushed from the underside of the filter. Later, when carbon was again burned out, there was no trace of any unburned deposit. It. P. Cole, Paterson, N. J., In Popular Mechanics Magazine. |
