Gm Global Technolgoy Operations, Inc.

Philip J Fikany

Joseph K Moore

Lei Li

Terry W Ostan

Jackson L Bahm

Dennis P Stenson

Michael A Vieau, Ii

Thomas J Mockeridge

Steven J McCormick

A method is provided herein for determining a remaining useful life of an air filter. The method includes, but is not limited to, measuring a first airflow rate and a first air pressure (P) in an air cleaner assembly downstream of the air filter, wherein Pcorresponds to the first airflow rate. The method further includes measuring a second airflow rate and a second air pressure (P) in the air cleaner assembly downstream of the air filter, wherein Pcorresponds to the second airflow rate. The method further includes obtaining pressure differentials A, A, B, and Bfrom a data storage device. The method also includes calculating with a processor a result indicative of a useful life remaining for the air filter by taking into account P, P, A, A, B, and B. The method also includes reporting the result to a user.

Methods for determining a remaining useful life of an air filter

A collapsible underhood container for mounting under a vehicle hood with a portion of the collapsible underhood container extending into an area between the hood and an underhood safety plane when in an extended position, the container comprising: a lower housing, an upper container portion and a locking feature. The lower housing is fixed relative to the vehicle and has a bottom and side walls. The upper container portion has walls adjacent to and telescopically slidable on the side walls of the lower housing and a top, with the top located in the area between the hood and the safety plane. The locking feature maintains the upper container relative to the lower housing when in the extended position and releases the upper container portion to slide downward relative to the lower housing to a collapsed position when the hood contacts the upper container.

Collapsible underhood container

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Troy, MI, United States of America

Philip J Fikany