Controller and control method for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYuto IKEDA, Yuki NOSE, Keiichi MYOJO, Hirokazu ANDO
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Abstract
A controller executes a fuel introduction process of introducing, in a state in which the crankshaft of an internal combustion engine is rotating, air-fuel mixture that contains fuel injected by a fuel injection valve into the exhaust passage without burning the air-fuel mixture in the cylinder. The controller executes a discharge process of performing spark discharge of an ignition plug at non-combustion ignition timing during the execution of the fuel introduction process. The non-combustion ignition timing is timing within a period in which the air-fuel mixture is not burned in the cylinder even if the spark discharge of the ignition plug is performed.
Claims4
A controller for an internal combustion engine, wherein
- the internal combustion engine includes
- a fuel injection valve,
- a cylinder into which air-fuel mixture containing fuel injected by the fuel injection valve is introduced,
- an ignition plug that ignites the air-fuel mixture introduced into the cylinder by spark discharge,
- an exhaust passage through which gas discharged from inside the cylinder flows, and
- a three-way catalyst provided in the exhaust passage,
- the controller is configured to execute:
- a fuel introduction process of introducing, in a state in which a crankshaft of the inters al combustion engine is rotating, the air-fuel mixture that contains the fuel injected by the fuel injection valve into the exhaust passage without burning the air-fuel mixture in the cylinder;
- and
- a discharge process of performing spark discharge of the ignition plug at non-combustion ignition timing during the execution of the fuel introduction process, and
- the non-combustion ignition timing is timing within a period in which the air-fuel mixture is not burned in the cylinder even if the spark discharge of the ignition plug is performed.
A controller for an internal combustion engine, wherein
- the internal combustion engine includes
- a fuel injection valve,
- a cylinder into which air-fuel mixture containing fuel injected by the fuel injection valve is introduced,
- an ignition plug that ignites the air-fuel mixture introduced into the cylinder by spark discharge,
- an exhaust passage through which gas discharged from inside the cylinder flows, and
- a three-way catalyst provided in the exhaust passage,
- the controller includes circuitry that is configured to execute:
- a fuel introduction process of introducing, in a state in which a crankshaft of the internal combustion engine is rotating, the air-fuel mixture that contains the fuel injected by the fuel injection valve into the exhaust passage without burning the air-fuel mixture in the cylinder;
- and
- a discharge process of performing spark discharge of the ignition plug at non-combustion ignition timing during the execution of the fuel introduction process, and
- the non-combustion ignition timing is timing within a period in which the air-fuel mixture is not burned in the cylinder even if the spark discharge of the ignition plug is performed.
A control method for an internal combustion engine, wherein
- the internal combustion engine includes
- a fuel injection valve,
- a cylinder into which air-fuel mixture containing fuel injected by the fuel injection valve is introduced,
- an ignition plug that ignites the air-fuel mixture introduced into the cylinder by spark discharge,
- an exhaust passage through which gas discharged from inside the cylinder flows, and
- a three-way catalyst provided in the exhaust passage,
- the method comprises:
- executing a fuel introduction process of introducing, in a state in which a crankshaft of the internal combustion engine is rotating, the air-fuel mixture that contains the fuel injected by the fuel injection valve into the exhaust passage without burning the air-fuel mixture in the cylinder;
- and
- executing a discharge process of performing spark discharge of the ignition plug at non-combustion ignition timing during the execution of the fuel introduction process, and
- the non-combustion ignition timing is timing within a period in which the air-fuel mixture is not burned in the cylinder even if the spark discharge of the ignition plug is performed.
Dependencies are inferred from the claim text.