{
  "$type": "site.standard.document",
  "description": "Provided is an internal combustion engine control device capable of more appropriately correcting an output value of a flow rate sensor that measures a flow rate of air flowing through an intake flow path of an internal combustion engine, and further reducing an error between a corrected air flow…",
  "path": "/patents/1298948",
  "publishedAt": "2021-09-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/222",
    "Hitachi Automotive Systems, Ltd."
  ],
  "textContent": "Provided is an internal combustion engine control device capable of more appropriately correcting an output value of a flow rate sensor that measures a flow rate of air flowing through an intake flow path of an internal combustion engine, and further reducing an error between a corrected air flow rate and an actual air flow rate as compared to a conventional device. For this purpose, the internal combustion engine control device of the present invention includes an arithmetic device including a fundamental frequency derivation unit that derives a fundamental frequency, a flow rate amplitude calculation unit that extracts a radio frequency of a plurality of frequencies equal to or higher than the fundamental frequency from a pulsation waveform based on the output value of the flow rate sensor as a flow rate radio frequency and calculates an amplitude of the flow rate radio frequency for each frequency, a correction amount derivation unit that derives a correction amount based on the amplitude of the flow rate radio frequency for each frequency, and a flow rate calculation unit that calculates a flow rate of air by using the output value of the flow rate sensor and the correction amount.",
  "title": "INTERNAL COMBUSTION ENGINE CONTROL DEVICE"
}