US 11,788,452 B2
Tank for a liquid solution
Andrea Spazio, Rovigo (IT)
Assigned to CARRARO S.P.A., Campodarsego-Padova (IT)
Filed by CARRARO S.P.A., Campodarsego-Padova (IT)
Filed on Dec. 23, 2021, as Appl. No. 17/560,538.
Prior Publication US 2022/0205379 A1, Jun. 30, 2022
Int. Cl. F01N 3/20 (2006.01)
CPC F01N 3/2066 (2013.01) [F01N 3/206 (2013.01); F01N 3/208 (2013.01); F01N 2610/02 (2013.01); F01N 2610/10 (2013.01); F01N 2610/14 (2013.01); F01N 2610/142 (2013.01); F01N 2610/1406 (2013.01); F01N 2610/1413 (2013.01); F01N 2610/1426 (2013.01); F01N 2610/1466 (2013.01); F01N 2610/1473 (2013.01); F01N 2610/1486 (2013.01); F01N 2900/1811 (2013.01); F01N 2900/1814 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A tank (1) for a liquid solution based on water and urea, configured to be combined with a selective catalytic reduction system, the tank comprising:
a container (2) including an upper wall (21);
a filling pipe union (3) which is positioned on the upper wall (21) of the container (2) and which is configured to introduce the liquid solution;
a lower opening (41), from which the liquid solution being introduced passes into the container (2) and which protrudes with respect to the upper wall (21) towards the interior of the container (2);
a central pipe (4) which is positioned inside the filling pipe union (3) and which comprises a central member (45) having an elongate shape and having an end (43) at which the lower opening (41) is formed; and
a closure float (5) which is positioned in the container (2) and which is connected to the lower opening (41) and which is configured so as to raise and close the lower opening (41) once the liquid solution in the container (2) reaches a predetermined level.