Engine controller, engine control method, and storage medium
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYuki SUZUKI, Tomihisa TSUCHIYA
Life of this patent
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Abstract
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.
Claims8
An engine controller comprising control circuitry, wherein
- the control circuitry is configured to:
- control an engine, the engine including an injector that injects fuel into a cylinder, and an intake valve closing 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 of the predetermined periods is a second injection period, and
- perform a pre-ignition prevention injection process, wherein
- the pre-ignition prevention injection process controls the 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.
An engine control method executed by control circuitry, the engine control method comprising:
- injecting fuel into a cylinder of an engine using an injector;
- closing an intake valve after a compression stroke starts, wherein 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 of the predetermined periods is a second injection period;
- and
- executing a pre-ignition prevention injection process that controls the 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.
A non-transitory computer-readable storage medium that stores a program for causing a processor to execute an engine control process, the engine control process comprising:
- injecting, by control circuitry, fuel into a cylinder of an engine using an injector;
- closing, by the control circuitry, an intake valve after a compression stroke starts, wherein 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 of the predetermined periods is a second injection period;
- and
- executing, by the control circuitry, a pre-ignition prevention injection process that controls the 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.
Dependencies are inferred from the claim text.