US 12,203,485 B1
Diesel exhaust fluid pump system and method
Jonathan Cerrona, El Dorado Hills, CA (US)
Assigned to Paragon Products, LLC, El Dorado Hills, CA (US)
Filed by Paragon Products, LLC, El Dorado Hills, CA (US)
Filed on Sep. 2, 2022, as Appl. No. 17/902,309.
Int. Cl. F04C 15/00 (2006.01); F01N 11/00 (2006.01); F04C 2/18 (2006.01); F04D 29/58 (2006.01)
CPC F04D 29/5813 (2013.01) [F01N 11/00 (2013.01); F04C 2/18 (2013.01); F04C 15/0096 (2013.01); F01N 2550/05 (2013.01); F01N 2610/02 (2013.01); F01N 2610/144 (2013.01); F01N 2900/1808 (2013.01); F01N 2900/1822 (2013.01); F04C 2270/195 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A diesel exhaust fluid pump comprising:
a motor comprising:
a plurality of Type-H stator windings; and
a rotor;
a drive shaft;
a drive shaft bushing;
a pump body cover;
a pump body housing;
a pump body insert;
a plurality of gears;
an inlet for receiving a diesel exhaust fluid from a first tank;
an outlet for supplying the diesel exhaust fluid to a second tank;
a shaft seal for separating the motor from the diesel exhaust fluid;
an inverter assembly comprising:
a microcontroller;
a bus connector;
an inverter housing;
a cooling pipe integrated into the inverter housing;
wherein the microcontroller controls circulation of diesel exhaust fluid through the cooling pipe to pull heat away from the inverter assembly; and
wherein the microcontroller shuts down the diesel exhaust fluid pump when pressure at the outlet of the diesel exhaust fluid pump is below a minimum fluid level threshold.