Gm Global Technolgoy Operations, Inc.

Terry C Bishop

Scott P Charnesky

Gregory J Fadler

Steven K Mackenzie

David A Schoener

Jamie L Hamilton

David W Turner

Andreas Wilhelm

William C Farrer

Reiner Weidemann

An air induction system includes a hood inlet duct having a first induction inlet and an air induction plenum assembly having a second induction inlet. The air induction system also includes an air box in fluid communication with the air induction plenum and the hood inlet duct. The air box defines an inner box cavity. The air induction system also includes a panel filter disposed inside the air box, wherein the panel filter divides the inner box cavity so that the first induction inlet and the second induction inlet are upstream of the panel filter.

Passively managed hood and plenum fed air induction system with parallel contaminant management features

A method of controlling operation of an adjustable shutter adapted for varying an amount of airflow to cool a powertrain in a vehicle includes monitoring the ambient temperature. The method also includes sensing an increase in the ambient temperature up to a threshold temperature value. The method additionally includes changing a position of the shutter after a predetermined amount of time has elapsed following the increase in the ambient temperature up to the threshold temperature value. A vehicle using a controller to perform such a method is also provided.

Shutter control during ambient temperature warm-up across a freezing point

A method of increasing operating efficiency of a powertrain includes unrestricting a grille opening by fully opening a shutter at or below a first predetermined vehicle speed, and turning a fan off. The method also includes unrestricting the grille opening by fully opening the shutter above the first predetermined vehicle speed and at or below a second predetermined vehicle speed under a high powertrain cooling load, and turning the fan on. The method additionally includes partially restricting the grille opening above the second predetermined vehicle speed via an intermediate position of the shutter, and turning the fan off. A specific size of the fan together with the selected positions for the shutter at the respective vehicle speeds provides sufficient airflow through the grille opening to cool the powertrain, and provides increased powertrain operating efficiency. A system for increasing operating efficiency of a powertrain and a vehicle are also provided.

System and method for increasing operating efficiency of a powertrain by controlling an aero shutter

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Chesaning, MI, United States of America

Terry C Bishop