Patent ID: 11898508
Assignee: HITACHI ASTEMO, LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 10:
11. An internal combustion engine control device that controls an internal combustion engine including an intercooler that cools intake air and an EGR flow path pipe that recirculates a part of exhaust gas in an exhaust path to an upstream side of the intercooler as EGR gas,
the internal combustion engine control device comprising:
a moisture amount calculation unit configured to calculate a total moisture amount contained in a mixed gas obtained by mixing fresh air flowing into the intercooler and the EGR gas;
a dew condensation calculation unit configured to calculate a dew condensation generation amount in the intercooler based on the total moisture amount calculated by the moisture amount calculation unit;
an EGR correction unit configured to correct a flow rate of the EGR gas to be recirculated based on the dew condensation generation amount calculated by the dew condensation calculation unit;
a first moisture amount calculation unit configured to calculate a first moisture amount that is a moisture amount contained in the fresh air; and
a second moisture amount calculation unit configured to calculate a second moisture amount that is a moisture amount contained in the EGR gas,
wherein the total moisture amount is a sum of the first moisture amount and the second moisture amount and,
wherein the second moisture amount calculation unit calculates the second moisture amount based on humidity information from a second humidity sensor that detects humidity of the EGR gas flowing through the EGR flow path pipe.