US 12,292,022 B2
Containerized alternative fuel control unit
Dana Ray Coldren, Secor, IL (US); Bryan E. Nelson, Chillicothe, IL (US); and Hoisan Kim, Dunlap, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Mar. 8, 2023, as Appl. No. 18/118,982.
Prior Publication US 2024/0301849 A1, Sep. 12, 2024
Int. Cl. F02M 37/00 (2006.01); B63H 21/14 (2006.01); B63H 21/38 (2006.01); F02M 37/04 (2006.01); F02M 37/32 (2019.01)
CPC F02M 37/0017 (2013.01) [B63H 21/14 (2013.01); B63H 21/38 (2013.01); F02M 37/0023 (2013.01); F02M 37/0052 (2013.01); F02M 37/0088 (2013.01); F02M 37/04 (2013.01); F02M 37/32 (2019.01)] 19 Claims
OG exemplary drawing
 
1. An alternative fuel management (AFM) system, comprising:
a base configured for arrangement on a supporting floor or other framework of a vessel and configured to support alternative fuel supply equipment;
a sealed enclosure sealingly coupled to the base and configured to surround the alternative fuel supply equipment;
the alternative fuel supply equipment arranged within the sealed enclosure, and comprising:
a high-pressure pump configured to be placed in fluid communication with a main alternative fuel tank arranged outside the sealed enclosure via a fuel supply line that extends across the sealed enclosure;
a fuel filter arranged along the fuel supply line and between the main alternative fuel tank and the high-pressure pump;
a transfer pump configured to deliver alternative fuel to the high-pressure pump; and
a high-pressure fuel delivery line extending across the sealed enclosure and configured to provide the alternative fuel from the high-pressure pump to a combustion engine;
a purge fluid system configured to deliver purge fluid to the combustion engine from a source of the purge fluid; and
a fuel return line comprising a first branch extending to a supplemental alternative fuel tank and a second branch extending to a primary fuel tank.