US 12,359,599 B2
Urea sender unit
Massimo Giachino, Mappano (IT); and Fabrizio Ciccarelli, Mappano (IT)
Assigned to ERRENCINQUE S.R.L., Mappano (IT)
Appl. No. 18/862,039
Filed by ERRENCINQUE S.R.L., Mappano (IT)
PCT Filed May 5, 2023, PCT No. PCT/IB2023/054679
§ 371(c)(1), (2) Date Oct. 31, 2024,
PCT Pub. No. WO2023/214363, PCT Pub. Date Nov. 9, 2023.
Claims priority of application No. 202221068713.8 (CN), filed on May 5, 2022; and application No. 102022000009170 (IT), filed on May 5, 2022.
Prior Publication US 2025/0179953 A1, Jun. 5, 2025
Int. Cl. F01N 3/20 (2006.01)
CPC F01N 3/208 (2013.01) [F01N 2560/06 (2013.01); F01N 2610/02 (2013.01); F01N 2610/10 (2013.01); F01N 2610/105 (2013.01); F01N 2610/11 (2013.01); F01N 2610/1413 (2013.01); F01N 2610/142 (2013.01); F01N 2610/146 (2013.01); F01N 2610/148 (2013.01); F01N 2900/1808 (2013.01); F01N 2900/1811 (2013.01); F01N 2900/1812 (2013.01); F01N 2900/1814 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A sender unit for conveying a solution of urea into a vehicle, the sender unit comprising:
an upper portion configured to be inserted in an opening of a tank for said urea solution, said upper portion defining a first and a second orifice adapted to be connected to an inlet pipe and to an outlet pipe forming part of a conditioning circuit;
a heat exchange pipe connected to the first and to the second orifice and adapted to be at least partially immersed in said urea solution;
sensor means adapted to detect a temperature of said urea solution, and
an electrical interface unit connected to said sensor means and configured to exchange electrical signals with an external electronic unit; and
an electro valve carried by said upper portion and connected to said interface unit and configured to control the flow of said conditioning fluid in said conditioning circuit;
wherein said electro valve is a three-way two-position valve configured to provide a flow rate of urea solution in a range between 0 and 600 l/h with a pressure drop that varies between 0 and 300 mbar.