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US 12,601,304 B2Granted
Anomaly determination device for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshitaka Nakamura, Kinji Morihiro
Life of this patent
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Abstract
An ECU executes a fuel cut-off time ignition process that causes the ignition device to generate a spark discharge during a fuel cut-off for temporarily stopping fuel injection of the fuel injection valve. The ECU determines that the fuel injection valve is stuck open when a rotation fluctuation amount of an internal combustion engine during execution of the fuel cut-off time ignition process is greater than or equal to a predetermined stuck-open determination value.
Claims4
An anomaly determination device for an internal combustion engine, wherein
- the internal combustion engine includes:
- a fuel injection valve that injects fuel into intake air;
- and
- an ignition device that generates spark discharge for igniting air-fuel mixture of the fuel injected by the fuel injection valve and the intake air,
- the anomaly determination device comprises processing circuitry, and
- the processing circuitry is configured to execute:
- a fuel cut-off time ignition process that causes the ignition device to generate spark discharge during execution of a fuel cut-off for temporarily stopping fuel injection of the fuel injection valve;
- and
- a stuck-open determination process that determines that the fuel injection valve is stuck open when a rotation fluctuation amount of the internal combustion engine during execution of the fuel cut-off time ignition process is greater than or equal to a predetermined stuck-open determination value.
6 more elements
Dependencies are inferred from the claim text.