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

Claim 0:
1. 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, wherein
the valve timing control unit is configured
not to execute, as the wet reduction control, a control to advance a valve opening timing of the intake valve ahead of an exhaust top dead center of the internal combustion engine in a first cycle after the startup of the internal combustion engine and
to execute, as the wet reduction control, the control to advance the valve opening timing of the intake valve ahead of the exhaust top dead center of the internal combustion engine in second and later cycle after the startup of the internal combustion engine.