US 12,454,924 B2
Control device for internal combustion engine and control method for internal combustion engine
Ryutaro Koiwai, Hitachinaka (JP); Osamu Mukaihara, Hitachinaka (JP); and Kazuhiro Oryoji, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 18/853,922
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Jun. 24, 2022, PCT No. PCT/JP2022/025290
§ 371(c)(1), (2) Date Oct. 3, 2024,
PCT Pub. No. WO2023/248462, PCT Pub. Date Dec. 28, 2023.
Prior Publication US 2025/0230776 A1, Jul. 17, 2025
Int. Cl. F02D 41/14 (2006.01); F02D 41/18 (2006.01)
CPC F02D 41/182 (2013.01) [F02D 41/1401 (2013.01); F02D 2041/1433 (2013.01); F02D 2200/0408 (2013.01); F02D 2200/0416 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A control device for an internal combustion engine, comprising:
an intake air flow rate acquisition unit that detects an intake air flow rate into an intake passage;
an atmospheric pressure acquisition unit that estimates or detects a pressure of atmosphere;
an atmospheric temperature acquisition unit that estimates or detects a temperature of atmosphere;
an intake passage internal average pressure estimation unit that estimates an intake passage internal average pressure in an intake passage having a region up to a throttle valve of the intake passage as one region;
an intake passage internal average temperature estimation unit that estimates an intake passage internal average temperature in a passage having a region up to a throttle valve of the intake passage as one region; and
a spatial distribution estimation unit that estimates distributions of pressure and temperature inside the intake passage based on an intake passage internal average pressure estimated by the intake passage internal average pressure estimation unit, an intake passage internal average temperature estimated by the intake passage internal average temperature estimation unit, and a model of energy change caused by a constituent element included in the intake passage.