{
  "$type": "site.standard.document",
  "description": "Methods and systems are provided for improving canister back-purging operations in multi-canister evaporative emissions systems. In one example a method comprises controlling a state of one or more valves positioned in the evaporative emissions system of a vehicle that includes at least two fuel…",
  "path": "/patents/1277488",
  "publishedAt": "2020-11-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M25/089",
    "Ford Global Technologies, LLC"
  ],
  "textContent": "Methods and systems are provided for improving canister back-purging operations in multi-canister evaporative emissions systems. In one example a method comprises controlling a state of one or more valves positioned in the evaporative emissions system of a vehicle that includes at least two fuel vapor storage canister, so that fuel vapors may be selectively purged from a single canister while other canisters are bypassed. In this way, fuel vapors from the single canister may be directly back-purged to the fuel tank, which may in turn reduce opportunity for release of undesired evaporative emissions to atmosphere.",
  "title": "SYSTEMS AND METHODS FOR VEHICLE MULTI-CANISTER EVAPORATIVE EMISSIONS SYSTEMS"
}