DYNAMIC ANALYSIS OF HEATING, VENTILATING AND COOLING MODULE PARTS OF AUTOMOBILE AIR CONDITIONING SYSTEM

Abstract

The automotive air-conditioning industry aiming at higher levels of quality, cost effectiveness and a short time to market, the need for simulation is at an all-time high. In the present work, the use of multibody dynamics approach is proposed in the simulation and analysis of the airflow control mechanisms of an automotive HVAC module for opening various doors/dampers used for passenger comfort. The movements of various parts have been kinematically and dynamically analysed. Two HVAC kinematic mechanism are analysed, one with single link configuration and other with two link configuration. Torque required in the two link configuration is lesser than in the single link configuration, thus lowering the effort required to rotate the cam from the control panel. Analyses are also done by varying the speed of cam, and by considering the friction between cam slots and pin, and air pressure on damper face. Flexible body analyses are also done and the stress is obtained at different speeds.