ENGINE CONTROLLER, ENGINE CONTROL METHOD, AND STORAGE MEDIUM

An engine controller, an engine control method, and a storage medium are provided. An intake valve closes after a compression stroke starts. One of a predetermined period before the compression stroke starts and a predetermined period after the intake valve closes is a first injection period and the other one is a second injection period. A pre-ignition prevention injection process controls an injector such that fuel corresponding to a requested injection amount is injected by dividing an injection period into the first injection period and the second injection period when a period required for fuel injection corresponding to the requested injection amount is longer than the first injection period.