Ford Motor Company Limited

Suhas Venkatappa

Francois Charette

Prakash Tuljaram Thawani

Michael Alan Blommer

Ronald Louis Quaglia

Rick S Hooker

Mark Norman Maskill

Vikas Juneja

A HVAC system for reducing the level of air rush and blower noise escaping into the interior of the vehicle when the HVAC system is operating in the recirculation mode. The HVAC system includes a recirculation door having an acoustically transparent portion that enables a component of the air rush and blower noise to pass through the recirculation door to the vehicle exterior instead of entering the vehicle cabin or interior through the recirculation air inlet.

Climate control system having noise reduction door

A method of objectively and subjectively monitoring noise and correspondingly level or loudness thereof in a product or assembly. The method includes placing a product on the vibration generator. Activating the vibration generator to move or shake the product to simulate usage conditions. A sound recording instrument measures and records the noise emitted by the product or assembly. Comparing an objective metric computed from the recorded noise with a threshold metric. Evaluating the vehicle to determine the noise source when the objective metric exceeds the threshold metric. Saving the objective metric along with the information relating to the source of the noise and necessary repairs for further evaluation and statistical analysis.

Method and apparatus for objective measurement of noise

Growing community of inventors

Ann Arbor, MI, United States of America

Suhas Venkatappa