US 12,140,111 B2
Mass airflow sensor and hydrocarbon trap combination
Kevin McClelland, Rancho Cucamonga, CA (US); and Steve Williams, Cherry Valley, CA (US)
Assigned to K&N Engineering, Inc., Riverside, CA (US)
Filed by K&N Engineering, Inc., Riverside, CA (US)
Filed on Sep. 30, 2022, as Appl. No. 17/958,047.
Application 17/958,047 is a continuation of application No. 16/823,183, filed on Mar. 18, 2020, granted, now 11,739,418.
Application 16/823,183 is a continuation of application No. 15/847,746, filed on Dec. 19, 2017, granted, now 10,598,137.
Claims priority of provisional application 62/436,989, filed on Dec. 20, 2016.
Prior Publication US 2023/0110960 A1, Apr. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 53/04 (2006.01); B01D 46/00 (2022.01); F02M 35/02 (2006.01); F02M 35/024 (2006.01); F02M 35/10 (2006.01); H01J 37/34 (2006.01)
CPC F02M 35/10281 (2013.01) [B01D 46/0036 (2013.01); B01D 46/0049 (2013.01); B01D 53/0446 (2013.01); F02M 35/02 (2013.01); F02M 35/024 (2013.01); F02M 35/10144 (2013.01); F02M 35/10386 (2013.01); H01J 37/3405 (2013.01); H01J 37/3441 (2013.01); H01J 37/3464 (2013.01); B01D 2257/702 (2013.01); B01D 2259/4516 (2013.01); B01D 2259/4566 (2013.01); B01D 2279/60 (2013.01); H01J 2237/24514 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hydrocarbon trap for an internal combustion engine, comprising:
a hydrocarbon absorbing sheet disposed within an interior of a housing;
a duct extending through and in fluid communication with the interior;
a first end of the duct coupled with an air filter;
a second end of the duct coupled with an air intake of the internal combustion engine; and
one or more ports in the duct for conducting evaporative hydrocarbon emissions from the internal combustion engine to the hydrocarbon absorbing sheet.
 
10. A method for a hydrocarbon trap for an internal combustion engine, comprising:
configuring a housing to support a hydrocarbon absorbing sheet in an interior of the housing;
placing the hydrocarbon absorbing sheet within the housing;
placing a duct into fluid communication with the interior;
coupling a first end of the duct with an air filter; and
coupling a second end of the duct with an air intake of the internal combustion engine.