US 11,946,439 B2
Fuel module for engine having service valve assembly for common drain from primary and secondary filters
Michael Taylor McKinley, Washington, IL (US); Jon Tyler Immel, Chillicothe, IL (US); Brian J Sutton, Edwards, IL (US); Stephen Ellis Oedewaldt, Mapleton, IL (US); and Iulian Gabriel Ghiorghias, Dunlap, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on May 9, 2022, as Appl. No. 17/739,502.
Prior Publication US 2023/0358194 A1, Nov. 9, 2023
Int. Cl. F02M 37/48 (2019.01); B01D 29/52 (2006.01); B01D 29/56 (2006.01); F02M 37/42 (2019.01); F02M 37/44 (2019.01)
CPC F02M 37/48 (2019.01) [B01D 29/52 (2013.01); B01D 29/56 (2013.01); F02M 37/42 (2019.01); F02M 37/44 (2019.01)] 18 Claims
OG exemplary drawing
 
1. A fuel filter module for an engine comprising:
a primary filter;
a secondary filter;
a module housing including a primary filter receptacle receiving the primary filter, and a secondary filter receptacle receiving the secondary filter, and having formed therein a primary-side fuel passage, a secondary-side fuel passage, a cross passage connecting between the primary-side fuel passage and the secondary-side fuel passage, and a drain port;
a drain valve movable between a closed position blocking the drain port, and an open position; and
a service valve assembly at least partially within the cross passage and adjustable from a closed configuration blocking the primary-side fuel passage from the secondary-side fuel passage, to an open configuration; the service valve assembly including a valve pin defining a longitudinal axis and movable axially in the cross passage from a first position in the closed configuration to a second position in the open configuration.