{
  "$type": "site.standard.document",
  "description": "A rotary engine (10, 110, 210), has: an outer body (11) defining a rotor cavity (14); a rotor within the rotor cavity (14) and defining at least one chamber; a pilot subchamber (30) defined by the outer body (11) and having an outlet in communication with the rotor cavity (14); a main fuel source…",
  "path": "/patents/1387821",
  "publishedAt": "2025-07-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B53/02",
    "PRATT & WHITNEY CANADA [CA]"
  ],
  "textContent": "A rotary engine (10, 110, 210), has: an outer body (11) defining a rotor cavity (14); a rotor within the rotor cavity (14) and defining at least one chamber; a pilot subchamber (30) defined by the outer body (11) and having an outlet in communication with the rotor cavity (14); a main fuel source (Si) of a heavy fuel; an alternative fuel source (S2) of an alternative fuel; a main injector (50) having a tip in communication with the rotor cavity (14) at a location spaced apart from the outlet of the pilot subchamber (30), the main injector (50) selectively fluidly connectable to the main fuel source (Si) or to the alternative fuel source (S2); and a controller (70) configured for: determining that the rotary engine (10, 110, 210) is in a vicinity of a city or an airport; and operating the main injector (50) in a first configuration in which the main injector (50) fluidly connects the alternative fuel source (S2) to the rotor cavity (14) while disconnecting the main fuel source (Si).",
  "title": "ROTARY ENGINE WITH DUAL-FUEL INJECTORS"
}