US 11,946,404 B2
Diesel fuel dosing module for regeneration of diesel particulate filters with continuous purging
Mihai Chiruta, Madison, WI (US); Barry Mark Verdegan, Stoughton, WI (US); Wassem Abdalla, Fishers, IN (US); and Z. Gerald Liu, Madison, WI (US)
Assigned to Cummins Filtration IP, Inc., Columbus, IN (US)
Appl. No. 17/312,593
Filed by Cummins Filtration IP, Inc., Columbus, IN (US)
PCT Filed Dec. 6, 2019, PCT No. PCT/US2019/064997
§ 371(c)(1), (2) Date Jun. 10, 2021,
PCT Pub. No. WO2020/123304, PCT Pub. Date Jun. 18, 2020.
Claims priority of provisional application 62/780,044, filed on Dec. 14, 2018.
Prior Publication US 2022/0042432 A1, Feb. 10, 2022
Int. Cl. F01N 3/00 (2006.01); F01N 3/025 (2006.01); F01N 3/36 (2006.01); F02M 37/48 (2019.01)
CPC F01N 3/025 (2013.01) [F01N 3/0253 (2013.01); F01N 3/36 (2013.01); F02M 37/48 (2019.01); F01N 2610/03 (2013.01); F01N 2610/08 (2013.01); F01N 2610/146 (2013.01); F01N 2610/1493 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system comprising:
a nozzle;
a dosing line connected to the nozzle and a fuel dosing module;
the fuel dosing module in fluid communication with the dosing line, the fuel dosing module comprising:
an outlet in fluid communication with the dosing line;
an air inlet positioned upstream of the outlet, the air inlet configured to receive air;
a fuel inlet positioned upstream of the outlet, the fuel inlet configured to receive fuel; and
a fuel valve positioned upstream of the outlet and downstream of the fuel inlet, the fuel valve configured to control a flow of fuel, wherein the fuel dosing module is configured to combine the fuel and the air upstream of the outlet and downstream of the fuel inlet to generate an air-fuel fluid, wherein the air-fuel fluid removes particles from the nozzle; and
a control module operably connected the fuel valve, the control module controlling the fuel dosing module between a dosing state, a purge state, and a cleaning state, the control module causing fuel flow through the dosing line and the nozzle in the dosing state, the control module causing air flow through the dosing line to purge the fuel from the dosing line and the nozzle in the purge state, and the control module causing air-fuel fluid flow through the dosing line to remove particles from the nozzle in the cleaning state, the control module maintaining an air valve open during transitions between the cleaning state and the purge state.