{
  "$type": "site.standard.document",
  "description": "An internal combustion engine control apparatus includes a turbocharger (21), an intake air quantity detecting section, an intake air pressure detecting section, a turbine rotational speed limit determining section and a turbine control section. The turbine rotational speed limit determining…",
  "path": "/patents/996444",
  "publishedAt": "2012-10-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B37/12",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "An internal combustion engine control apparatus includes a turbocharger (21), an intake air quantity detecting section, an intake air pressure detecting section, a turbine rotational speed limit determining section and a turbine control section. The turbine rotational speed limit determining section determines a turbine rotational speed limit pressure ratio (Pratio_Comp_limit) between the upstream-side intake air pressure (P_in_Comp) and a downstream-side intake air pressure (P_out_Comp) in the air intake passage (3) at a downstream side of the compressor (23) for a turbine rotational speed limit that corresponds to the intake air quantity (Gair) detected by the intake air quantity detecting section. The turbine rotational speed limit determining section further calculates a turbine over rotation suppressing boost pressure (P_out_Comp_limit) of the turbine compressor (23) using the upstream-side intake air pressure (P_in_Comp) and the turbine rotational speed limit pressure ratio (Pratio_Comp_limit). The turbine control section controls the turbocharger (21) based on the turbine over rotation suppressing boost pressure (P_out_Comp_limit).",
  "title": "Internal combustion engine control apparatus"
}