Patent ID: 11867132
Assignee: DENSO CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 5:
6. A drive control device for an internal combustion engine, the internal combustion engine including a fuel injection valve, which is configured to inject fuel, an intake timing varying mechanism, which is configured to control opening/closing of an intake valve provided at an intake port, and an exhaust timing varying mechanism, which is configured to control opening/closing of an exhaust valve provided at an exhaust port, the drive control device comprising:
a valve timing control unit configured to execute a wet reduction control to control at least one of the intake timing varying mechanism or the exhaust timing varying mechanism to reduce a fuel wet amount, which is a quantity of fuel adhering to a wall surface of the internal combustion engine facing to an injection field where the fuel is to be injected, by a counterflow blowing back toward the intake port, when a request is made to reduce the fuel wet amount in a startup of the internal combustion engine; and
an injection control unit configured to
acquire a counterflow generation period, which is a period in which the counterflow is generated in the injection field, and
execute a split injection control to control the fuel injection valve to split an intake valve closed injection, which is fuel injection performed when the intake valve is closed, into a plurality of times of injection, when fuel cannot be injected by a total injection quantity, by which fuel is to be injected into the internal combustion engine in one cycle, during the counterflow generation period.