US 12,435,654 B1
Work vehicle and aftertreatment system therefor
Danan Dou, Cedar Falls, IA (US); Eric J. Hruby, Waterloo, IA (US); and Eric J. Haaland, Waverly, IA (US)
Assigned to DEERE & COMPANY, Moline, IL (US)
Filed by Deere & Company, Moline, IL (US)
Filed on Jun. 27, 2024, as Appl. No. 18/756,502.
Int. Cl. F01N 3/20 (2006.01); F01N 1/08 (2006.01); F01N 3/031 (2006.01); F01N 3/035 (2006.01); F01N 3/28 (2006.01); F01N 13/08 (2010.01)
CPC F01N 3/208 (2013.01) [F01N 3/035 (2013.01); F01N 1/082 (2013.01); F01N 1/085 (2013.01); F01N 3/031 (2013.01); F01N 3/2053 (2013.01); F01N 3/2093 (2013.01); F01N 3/2892 (2013.01); F01N 13/087 (2013.01); F01N 2250/02 (2013.01); F01N 2410/02 (2013.01); F01N 2410/03 (2013.01); F01N 2410/04 (2013.01); F01N 2560/06 (2013.01); F01N 2560/07 (2013.01); F01N 2610/02 (2013.01); F01N 2900/1411 (2013.01); F01N 2900/1602 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A work vehicle having an engine that generates exhaust gases flowing through an exhaust flow path to an exhaust vent, the work vehicle comprising:
a nitrogen-oxide (NOx) reduction device;
a particulate filter;
a temperature sensor sensing a temperature associated with the exhaust gases; and
a plurality of flow control devices in the exhaust flow path between the engine and the exhaust vent and operable to define a first flow path based on the sensed temperature being less than a predetermined temperature threshold and a second flow path otherwise;
wherein the NOx reduction device is upstream of the particulate filter relative to the exhaust flow path in the first flow path and the particulate filter is upstream of the NOx reduction device relative to the exhaust flow path in the second flow path.