A METHOD TO DETERMINE THE SELF FREQUENCIES OF A CRANKSHAFT FROM A SINGLE CYLINDER ENGINE WITH VARIABLE COMPRESSION RATIO

Abstract

Determining the self frequencies of a crankshaft from a single cylinder engine is a method to research the noise, vibration and harshness produced by the engine. Vibration is an important factor in the reliability and quality of an engine, noise is of importance to vehicle users and environmentalists, harshness is related to the quality and transient nature of vibration and noise and is strongly linked to engine refinement. Knowing the self frequencies of the crankshaft using finite-element and multi-body systems analysis software can be very useful in the development of a new engine and can be a way to improve the engine from the designing phase.