US 12,215,643 B2
Control device for internal combustion engine
Kazuhiro Oryoji, Hitachinaka (JP); and Yoshihiko Akagi, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 18/562,060
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Feb. 2, 2022, PCT No. PCT/JP2022/003910
§ 371(c)(1), (2) Date Nov. 17, 2023,
PCT Pub. No. WO2022/264482, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 2021-100667 (JP), filed on Jun. 17, 2021.
Prior Publication US 2024/0229731 A1, Jul. 11, 2024
Int. Cl. F02D 41/00 (2006.01); F02P 5/15 (2006.01)
CPC F02D 41/0077 (2013.01) [F02D 41/009 (2013.01); F02P 5/1502 (2013.01); F02D 2200/024 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A control device for an internal combustion engine, the control device comprising a processor configured to:
calculate a change amount of a parameter indicating a combustion state of the internal combustion engine, and
correct an operation amount of an actuator that adjusts a dilution of an air-fuel mixture according to a difference between the change amount of the parameter indicating the combustion state and a target value of the change amount, and bring the change amount close to the target value, wherein
the actuator is an EGR valve, and
the processor is configured to
increase an opening of the EGR valve as the difference increases in a case where the change amount of the parameter indicating the combustion state is less than the target value,
decrease the opening of the EGR valve as the difference increases and advance an ignition timing in a case where the change amount of the parameter indicating the combustion state is more than the target value, and
increase discharge energy generated in an ignition device in a case where the change amount does not decrease after the ignition timing is advanced.