US 11,668,212 B2
Double-sided oil cooler for use in a generator engine
Mark J. Sarder, Waukesha, WI (US); Russell J. Dopke, Elkhart Lake, WI (US); Hiroaki Sato, Brookfield, WI (US); and Leigh A. Jenison, Hartland, WI (US)
Assigned to Champion Power Equipment, Inc., Santa Fe Springs, CA (US)
Filed by Champion Power Equipment, Inc., Santa Fe Springs, CA (US)
Filed on Mar. 19, 2019, as Appl. No. 16/357,546.
Claims priority of provisional application 62/687,337, filed on Jun. 20, 2018.
Prior Publication US 2019/0390580 A1, Dec. 26, 2019
Int. Cl. F01M 5/00 (2006.01); F02B 63/04 (2006.01); F28F 3/02 (2006.01); H02K 7/18 (2006.01)
CPC F01M 5/002 (2013.01) [F02B 63/042 (2013.01); F28F 3/022 (2013.01); H02K 7/1807 (2013.01); F28F 2250/102 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An oil cooler comprising:
a base plate including:
a recessed portion formed on a first surface of the base plate, the recessed portion defined by an interior wall and an exterior wall, with the recessed portion including an inlet port and an outlet port;
a divider wall positioned in the recessed portion and extending between the exterior wall and the interior wall to separate the inlet port and the outlet port;
a plurality of protrusions arranged in the recessed portion to provide a plurality of tortuous flow paths through which oil flows from the inlet port to the outlet port; and
a first set of cooling fins formed on a second surface of the base plate opposite the first surface; and
a cover plate attached to the first surface of the base plate so as to cover the recessed portion and thereby define a cavity to circulate the oil therethrough, the cover plate including a second set of cooling fins formed thereon.