US 12,246,717 B2
Systems and methods for re-starting engine during coasting event
David Michael Elkins, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Aug. 9, 2022, as Appl. No. 17/818,401.
Claims priority of provisional application 63/242,747, filed on Sep. 10, 2021.
Prior Publication US 2023/0080451 A1, Mar. 16, 2023
Int. Cl. B60W 30/18 (2012.01); B60W 10/02 (2006.01); B60W 10/06 (2006.01)
CPC B60W 30/18072 (2013.01) [B60W 10/02 (2013.01); B60W 10/06 (2013.01); B60W 2510/0208 (2013.01); B60W 2510/0638 (2013.01); B60W 2710/0627 (2013.01); B60W 2710/0644 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
operating a vehicle in a coasting mode during which fuel to an engine of the vehicle is cut-off and a driveline of the vehicle is disengaged from the engine while the vehicle coasts;
determining the coasting mode of operation of the vehicle is to be terminated;
in response to the determining, selecting an engine re-start mode that increases a speed of the engine by coupling the engine to the driveline, wherein the engine re-start mode includes initiating closing a clutch between the driveline and the engine before re-initiating fueling to the engine and re-initiating fueling to the engine during closing the clutch in response to the speed of the engine increasing to a speed threshold less than a desired operating speed; and
re-engaging the driveline to the engine in response to the speed of the engine being increased to the desired operating speed.