US 11,920,533 B2
Systems and methods for coordination of skip-fire and aftertreatment heater operation to maintain exhaust gas temperature
Jennifer Kay Light-Holets, Greenwood, IN (US); J. Steven Kolhouse, Columbus, IN (US); Christopher R. Nelson, Columbus, IN (US); Anant Puri, Greenwood, IN (US); Xiaobo Song, Columbus, IN (US); and Avra Brahma, Fishers, IN (US)
Assigned to Cummins Inc., Columbus, IN (US); and Tula Technology, Inc., San Jose, CA (US)
Appl. No. 17/927,573
Filed by Cummins Inc., Columbus, IN (US); and Tula Technology, Inc., San Jose, CA (US)
PCT Filed May 27, 2020, PCT No. PCT/US2020/034650
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2021/242228, PCT Pub. Date Dec. 2, 2021.
Prior Publication US 2023/0204000 A1, Jun. 29, 2023
Int. Cl. F01N 3/20 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01); F02D 41/38 (2006.01); F02M 27/04 (2006.01)
CPC F02D 41/024 (2013.01) [F01N 3/202 (2013.01); F01N 3/2026 (2013.01); F01N 3/2033 (2013.01); F01N 3/2066 (2013.01); F02D 41/0002 (2013.01); F02D 41/005 (2013.01); F02D 41/0087 (2013.01); F02D 41/38 (2013.01); F02M 27/04 (2013.01); F02D 2041/389 (2013.01); F02D 2200/0804 (2013.01); F02D 2200/50 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
an aftertreatment system heater of an exhaust aftertreatment system coupled to an engine; and
a controller coupled to the aftertreatment system heater, the controller configured to:
determine a condition of an exhaust gas from the engine;
compare the condition of the exhaust gas to a predefined threshold;
in response to determining that the condition of the exhaust gas does not meet the predefined threshold, determine whether an engine operating condition is met for activating a cylinder deactivation operating mode for the engine;
in response to determining that the engine operating condition is met, operate the engine in the cylinder deactivation operating mode by deactivating a cylinder of a plurality of cylinders; and
in response to determining that the engine operating condition is not met, activate the aftertreatment system heater to heat the exhaust gas.