US 12,292,023 B2
Control device for internal combustion engine
Eiichiro Ohata, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/597,080
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Jun. 16, 2020, PCT No. PCT/JP2020/023521
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/262098, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-118841 (JP), filed on Jun. 26, 2019.
Prior Publication US 2022/0316436 A1, Oct. 6, 2022
Int. Cl. F02P 9/00 (2006.01); F02P 3/04 (2006.01); F02P 3/05 (2006.01)
CPC F02P 9/007 (2013.01) [F02P 3/0442 (2013.01); F02P 3/05 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A control device for an internal combustion engine, comprising
an ignition control unit that controls energization of an ignition coil that supplies electric energy to an ignition plug that discharges in a cylinder of the internal combustion engine to ignite fuel,
wherein the ignition coil includes a primary coil disposed on a primary side, and a secondary coil disposed on a secondary side, and
wherein the ignition control unit
controls the energization of the ignition coil such that, by a first induced current flowing through the secondary coil and a second induced current flowing through the secondary coil in superposition with the first induced current based on a primary current flowing through the primary coil, the ignition coil releases first electric energy and, in addition, releases second electric energy in superposition with the first electric energy; and
controls the energization of the ignition coil such that, by the second induced current being cut off when the first induced current becomes equal to or less than a predetermined first set value, the ignition coil stops the releasing of the second electric energy at a timing depending on a state of a gas around the ignition plug to stop the discharge of the ignition plug.