Efficiency of Shock Absorber in Vehicle Suspension

Abstract

This article presents the analytical proof of the presence of two inefficient areas in vehicle suspension oscillation cycle in linear shock absorber work. It derived on the basis of analysis of the dynamics equations for the linear single-support single-mass vibrating system with fixed elastic and damping characteristics at harmonic kinematic disturbance. Expressions of the full, efficient and inefficient work of the linear damper in one oscillation cycle are derived. Thereunder the equations for calculation of the effective shock absorber work ratio for various types of damping characteristics are determined. The graphs of the effective shock absorber work ratio on the relative frequency of the disturbance and the relative damping factor are implemented. The evaluation of vehicle suspension efficiency based on the values of inefficient force pulse ratio for known efficient control algorithms of elastic-damping characteristic of pneumatic shock absorber.