An Introduction to an Analysis of Gas Vibrations in Engine Manifolds

The performance of an internal-combustion engine may be influenced favorably or unfavorably by the vibration of the gas in the manifold. The analysis of this complicated action involves techniques which are not generally established nor widely known. This paper gives an introduction to these various techniques and their co-ordination. Included is a discussion of the vibration characteristics with damping for a tube, details as to numerical computations, and an outline of the analysis for a simple induction system.