Auto Racing Articles: Carburetor Design

Carburetor Design - A preliminary study of the state of the art.
Article courtesy of http://RacingSecrets.com

Any effort to improve the gasoline engine and to perfect it for use, in aeronautic, marine, and land transportation service must proceed along a series of more or less parallel coordinate lines of attack, each concerned with, some one independent phase of the problem, after a general review has indicated the nature of these subsidiary problems and their relations Such a general review with special reference to aero engines has already been made and formed the subject matter of the report of last year.

In addition to the specific problems of engine design of involving arrangement of parts selection and treatment of materials, and determination of best dimensions for strength or life on the one hand and large mean effective pressures with high thermal efficiency at high speeds on the other, there is 'another group concerned with what might be termed the engine auxiliary functions. These latter include ignition, lubrication, cooling, and last, but most important of all, carburetion It is most important because it is concerned with the making of suitable mixtures, without which the engine can not be a success no matter how perfectly the other phases of the engine problem maybe worked out. It bears the same relation to the gasoline engine as steam making does to the steam engine, and the carburetor, with its connections by which the result is attained, is just as important to the former as is the steam boiler and its connections to the latter. This being the case, it is logical and proper that this the second report, and the first one following the general review, should be concerned with the carburetor and the problems of its design.

The complexity of the problem of carburetor design, from the scientific engineering standpoint as distinguished from the empirical cut and try one, can hardly be overrated, and the difficulties involved are realized only by those familiar with the question by reason of experience and extended study. It involves not only many unknown facts and relations of the physics of flow of this clam of liquids in small passages and of air at variable rates through every conceivable shape of duct and orifice within certain limits of are, but it also requires the crossing of the borderland of knowledge on the physical chemistry of these complex fuels their vapors, and vapor air mixtures; fuels which are solutions of many end variable constituents, all of them having tendencies ... Download the entire 513pg ebook (22mb) [Right Click] to save file to your hard drive. You'll need Adobe Acrobat to view.

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This article courtesy of http://RacingSecrets.com , your racing technology resource.