Patent ID: 7757481

Claim:
A method of cooling exhaust gases, the method comprising: urging the gases through a first passage; urging the gases from an outlet of the first passage into a substantially enclosed volume, the substantially enclosed volume being elongate in a first direction extending from the first passage to a distal end of the volume, wherein the gases flow through an inlet of the volume in the first direction; allowing the gases to expand within the volume, a portion of the volume having a cross-sectional area greater than a cross-sectional area of the outlet of the first passage; redirecting the flow of gases through the volume from the first direction to a second direction substantially angled relative to the first direction using a plurality of baffles positioned within the elongate substantially enclosed volume, the baffles being substantially angled with respect to the first direction; and urging the gases from the enclosed volume to the atmosphere through a plurality of outlets, wherein the gases flow through the plurality of outlets in the second direction.