Patent ID: 7056442

Claim:
A method of removing contaminants from a container in a vehicle, said method comprising the steps of: determining a flow direction of a first fluid through a container on a vehicle, which container is configured to facilitate heat transfer from the first fluid to a second fluid; where said container has an inlet end and an outlet end and during operation of the vehicle, the first fluid flows only in one direction, which is from the inlet end to the outlet end; coupling a filter system to the container; pumping the first fluid in a primary cleaning flow direction; reversing a flow of said first fluid through said container; resuming flow of the first fluid in said primary cleaning flow direction at a time within a predetermined reversal interval from when said step of reversing a flow is commenced; wherein said predetermined reversal interval is less than 10 seconds; and, repeating said steps of reversing and resuming such that said first fluid flows in a reverse direction for a cumulative reverse direction duration for no more than ten percent of a cumulative primary cleaning direction duration of first fluid flowing in said primary cleaning direction.