US 7,610,905 B2
Passive evaporative emission control module
Douglas J. Callahan, 2531 Cedar Brock Ct., Rochester Hills, Mich. 48309 (US); Brent J. Ertl, 141 Emily La., Darien, Wis. 53114 (US); Juris J. Pruzinskis, 2533 Mt. Vernon Ave., Janesville, Wis. 53545 (US); Michael P. Farrey, 214 Prairie Dr., Walworth, Wis. 53184 (US); and Hans Bishop, 1501 Donald Ave., Royal Oak, Mich. 48073 (US)
Filed on Dec. 21, 2007, as Appl. No. 11/963,146.
Application 11/963146 is a continuation of application No. 11/419584, filed on May 22, 2006, granted, now 7,311,088, filed on Dec. 25, 2007.
Prior Publication US 2008/0092857 A1, Apr. 24, 2008
Int. Cl. F02M 33/02 (2006.01)
U.S. Cl. 123—518  [123/519; 123/520] 13 Claims
OG exemplary drawing
 
1. A fuel reservoir assembly comprising:
(a) a fuel reservoir having a quantity of fuel and a quantity of fuel vapor, said fuel reservoir comprising;
an enclosure with an exterior wall; and
an internal holding volume with a vapor region having said quantity of fuel vapor;
(b) a body securely mounted to said exterior wall, comprising;
a fuel inlet; and
a fuel outlet in communication with said internal holding volume;
(c) a center fuel flow axis defined along the length of said body from said fuel inlet to said fuel outlet;
(d) a housing disposed around a circumference of said body and secured to said exterior wall, comprising;
at least one atmospheric air opening; and
at least one vapor emission inlet for communication with said vapor region; and
a hydrocarbon filter disposed between said at least one atmospheric air opening and said at least one vapor emission inlet and passively filtering said quantity of fuel vapor emissions within said vapor region, said hydrocarbon filter being purged due to draw of fuel from said fuel reservoir; and
(e) an evaporative emission line coupling said housing to said fuel reservoir through said exterior wall;
wherein said housing comprises a hydrocarbon filter purge path for air and said quantity of fuel vapor to flow in said at least one atmospheric air opening, across said hydrocarbon filter, substantially along a plane that is not parallel to said center fuel flow axis, and through said at least one vapor emission inlet.