US 12,442,341 B2
Exhaust temperature controls for engine operation with cylinder deactivation
Aaron William Beinborn, Columbus, IN (US); Lyle E. Kocher, Whiteland, IN (US); J. Steven Kolhouse, Columbus, IN (US); Suk-Min Moon, Greenwood, IN (US); Sriram S. Popuri, Greenwood, IN (US); Janardhan Kodavasal, Indianapolis, IN (US); Ved Merchant, Columbus, IN (US); Kristopher R. Bare, Columbus, IN (US); and Avra Brahma, Fishers, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Aug. 3, 2022, as Appl. No. 17/817,096.
Application 17/817,096 is a continuation of application No. PCT/US2021/016148, filed on Feb. 2, 2021.
Claims priority of provisional application 62/970,818, filed on Feb. 6, 2020.
Prior Publication US 2022/0372926 A1, Nov. 24, 2022
Int. Cl. F02D 41/02 (2006.01); F02D 13/06 (2006.01); F02D 41/00 (2006.01); F02D 41/40 (2006.01); F02D 41/14 (2006.01)
CPC F02D 41/0245 (2013.01) [F02D 13/06 (2013.01); F02D 41/0087 (2013.01); F02D 41/401 (2013.01); F02D 41/0007 (2013.01); F02D 2041/0012 (2013.01); F02D 41/1446 (2013.01); F02D 41/405 (2013.01); F02D 2200/0802 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system comprising:
an internal combustion engine and a controller operatively coupled with the internal combustion engine, wherein the controller is configured to:
perform a cylinder deactivation operation while running the engine;
select at least one of a plurality of temperature maintenance actions to increase an exhaust temperature including (a) evaluating whether a first one of the plurality of temperature maintenance actions is available, (b) if the first one of the plurality of temperature maintenance actions is available, evaluating whether a temperature change provided by the first one of the temperature maintenance actions satisfies at least one target criterion including evaluating a predicted or estimated timing or rate of change in exhaust temperature magnitude relative to a timing or rate of change target, and (c) if either the first one of the plurality of temperature maintenance actions is not available or the temperature change provided by the first one of the temperature maintenance actions does not satisfy the target criterion, evaluating whether a second one of the plurality of temperature maintenance actions is available; and
perform the at least one of the plurality of temperature maintenance actions effective to increase the exhaust temperature,
wherein the plurality of temperature maintenance actions include at least two of: a charge air cooler bypass operation, an EGR cooler bypass operation, an aftertreatment system heater operation, a turbocharger bypass operation, a turbocharger geometry adjustment operation, and a delayed injection timing operation.