Patent ID: 11913391
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 11:
12. A control method for an internal combustion engine, the internal combustion engine including:
a cylinder;
an intake passage connected to the cylinder;
a water injection valve configured to inject water into the intake passage; and
an intake valve configured to selectively open and close a connection port between the intake passage and the cylinder, wherein
a period from a time point at which a compression stroke is started to a time point at which a next compression stroke is started is referred to as a single cycle,
the control method comprises:
calculating a water collection amount based on a temperature of intake air flowing through the intake passage, the water collection amount being an amount of water that collects on a wall surface of the intake passage;
executing an injection process that causes the water injection valve to inject water in response to the intake valve being open in the single cycle; and
executing an additional injection process that causes the water injection valve to inject water in response to the intake valve being closed in the single cycle in addition to water injection in the injection process in a case in which the water collection amount is less than a specified value that has been defined in advance.