How Does the Comprex ^® Pressure-Wave Supercharger Work?

The paper describes the aerodynamic principle of the Comprex^® pressure-wave supercharger (PWS) and explains how gas-dynamic phenomena can be utilized to create a mechanically simple and robust boosting device for vehicles which permits the combination of excellent driveability, low fuel consumption and low emission without reliance on complicated control systems.

The main features of the PWS are described and a few examples of recent applications to automobile Diesel engines are shown.