{
  "$type": "site.standard.document",
  "description": "A cylinder intake air mass quantity for an engine is calculated in accordance with the cylinder intake air volume quantity, the manifold air mass quantity and a manifold volume. The cylinder intake air volume quantity is calculated in accordance with a cylinder volume at an intake valve closing…",
  "path": "/patents/1102626",
  "publishedAt": "2002-08-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D13/0203",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "A cylinder intake air mass quantity for an engine is calculated in accordance with the cylinder intake air volume quantity, the manifold air mass quantity and a manifold volume. The cylinder intake air volume quantity is calculated in accordance with a cylinder volume at an intake valve closing timing. The manifold air mass quantity is calculated from a balance between an intake manifold inflow air mass quantity and an intake manifold outflow air mass quantity. The manifold inflow air mass quantityQa. DELTA t is reset to a minimum setting value when an engine stop state with no intake air induction is detected.",
  "title": "Apparatus and method for engine cylinder intake air quantity calculation"
}