Patent ID: 11952953
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 4:
5. The anomaly diagnosing apparatus for the vehicle on-board internal combustion engine according to claim 1, wherein
the vehicle on-board internal combustion engine includes an air flow meter that detects the intake air amount,
the PCV pressure is one of multiple PCV pressures detected by the PCV pressure sensor from a start to an end of the specific period, and
the processing circuitry is configured to
in the first process, calculate, as the pressure fluctuation amount, a cumulative value of a difference between each of the multiple PCV pressures and the PCV pressure detected by the PCV pressure sensor at a starting point of the specific period, and
in the second process, as the correction of the pressure fluctuation amount, divide the pressure fluctuation amount by a cumulative value of the intake air amount from a start to an end of the specific period detected by the air flow meter.