US 12,486,816 B2
Engine control systems and methods for starting an engine
Charles Wayne Reinhardt Swart, Bellingham, WA (US); Stephen Anthony Ciatti, Bellingham, WA (US); and Nick Hertlein, Bellingham, WA (US)
Assigned to PACCAR Inc, Bellevue, WA (US)
Filed by PACCAR Inc, Bellevue, WA (US)
Filed on Jun. 5, 2024, as Appl. No. 18/734,221.
Application 18/734,221 is a continuation of application No. 18/463,076, filed on Sep. 7, 2023, granted, now 12,037,956.
Prior Publication US 2025/0084802 A1, Mar. 13, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. F02D 41/06 (2006.01); F02D 13/02 (2006.01); F02D 41/30 (2006.01); F02P 5/15 (2006.01)
CPC F02D 41/062 (2013.01) [F02D 13/0215 (2013.01); F02D 41/3076 (2013.01); F02P 5/1504 (2013.01); F02D 2200/021 (2013.01); F02D 2200/101 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An engine control system for a vehicle, comprising:
at least one processor; and
a memory, operatively connected to the at least one processor and storing instructions that, when executed by the at least one processor and in response to receiving an engine start signal, cause the engine control system to perform a method, the method comprising:
causing a crankshaft of an engine of the vehicle to begin to rotate and to rotate through a first plurality of rotations, and
causing, for each of a first set of combustion chambers of the engine, an exhaust valve of the combustion chamber to remain in an opened position while the crankshaft rotates through the first plurality of rotations and prior to fuel being injected into the combustion chamber, and
causing, for each of a second set of combustion chambers of the engine, the exhaust valve of the combustion chamber to open and close while the crankshaft rotates through the first plurality of rotations and prior to fuel being injected into the combustion chamber.