US 12,460,594 B2
Shutdown control of internal combustion engine comprising lost motion component
Robb Janak, Bristol, CT (US); Justin D. Baltrucki, Canton, CT (US); Bruce A. Swanbon, Tolland, CT (US); and Eric J. Hodgkinson, New Hartford, CT (US)
Assigned to Jacobs Vehicle Systems, Inc., Bloomfield, CT (US)
Filed by Jacobs Vehicle Systems, Inc., Bloomfield, CT (US)
Filed on Nov. 30, 2023, as Appl. No. 18/524,380.
Claims priority of provisional application 63/385,447, filed on Nov. 30, 2022.
Prior Publication US 2024/0175403 A1, May 30, 2024
Int. Cl. F02D 41/04 (2006.01); F01L 9/10 (2021.01); F01L 9/40 (2021.01); F01L 13/00 (2006.01); F02D 13/06 (2006.01); F02D 41/00 (2006.01)
CPC F02D 41/042 (2013.01) [F01L 9/10 (2021.01); F01L 9/40 (2021.01); F01L 13/0005 (2013.01); F02D 13/06 (2013.01); F02D 41/0087 (2013.01); F01L 2009/4094 (2021.01); F01L 2013/001 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for controlling shutdown of an internal combustion engine comprising a plurality of cylinders and, for each of the plurality of cylinders, a hydraulically controlled lost motion component operatively connected to an engine valve corresponding to the cylinder, the method comprising:
determining, by an engine controller, that shutdown of the internal combustion engine has been requested;
responsive to the request for shutdown, initiating or continuing, by the engine controller, cylinder deactivation operation for each of at least one cylinder of the plurality of cylinders; and
upon completion of shutdown of the internal combustion engine, discontinuing cylinder deactivation operation for one or more of the at least one cylinder of the plurality of cylinders,
wherein initiating or continuing the cylinder deactivation operation for each of the at least one cylinder comprises, for an input to the hydraulically controlled lost motion component for each of at least one engine valve corresponding to the cylinder, operating the input to provide the cylinder deactivation operation for a duration at least long enough to complete shutdown of the internal combustion engine.