{
  "$type": "site.standard.document",
  "description": "Methods and systems are provided for diagnosing a variable displacement engine. In one example, a method includes during steady-state vehicle cruising, operating an engine with one or more cylinders of the engine deactivated, commanding the one or more cylinders to reactivate, and indicating…",
  "path": "/patents/1236817",
  "publishedAt": "2019-06-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/221",
    "Ford Global Technologies, LLC"
  ],
  "textContent": "Methods and systems are provided for diagnosing a variable displacement engine. In one example, a method includes during steady-state vehicle cruising, operating an engine with one or more cylinders of the engine deactivated, commanding the one or more cylinders to reactivate, and indicating cylinder valve actuator degradation responsive to a fuel usage change following the command to reactivate.",
  "title": "VARIABLE DISPLACEMENT ENGINE DIAGNOSTIC METHOD"
}