Air Extractor to Relieve Changes in Air Pressure in Automobiles

摘要

An air extraction apparatus for automotive vehicles opens an air flow path through the passenger compartment of the vehicle when wind throb conditions are sensed in the operation of the vehicle. The air extraction opening is located in a rear facing surface of the vehicle and is covered by a closure member that is movable by an actuator to selectively open the air extraction opening. The air extraction opening can be variable in cross-sectional area through the operation of the closure member to vary the rate of air flowing through the passenger compartment. The actuator is operatively coupled to a sensor that can sense wind throb conditions to affect an automatic opening of the air extraction opening. Wind throb conditions can be the existence of a single open window coupled with a minimum operating speed, or a threshold interior air pressure within the passenger compartment.