{
  "$type": "site.standard.document",
  "description": "A system and method of operating a hybrid vehicle having a hybrid powertrain including a motor-generator unit, a battery electrically connected to the motor-generator unit, an engine, and a transmission engageably connected to the engine and the motor-generator unit, the transmission having a…",
  "path": "/patents/1378252",
  "publishedAt": "2026-01-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60W20/30",
    "Caterpillar Inc."
  ],
  "textContent": "A system and method of operating a hybrid vehicle having a hybrid powertrain including a motor-generator unit, a battery electrically connected to the motor-generator unit, an engine, and a transmission engageably connected to the engine and the motor-generator unit, the transmission having a plurality of gears. The hybrid vehicle also includes a controller for controlling the hybrid powertrain. The controller is configured to determine a gear for the hybrid vehicle based on a retarding capability of the hybrid powertrain and a grade or slope of a terrain. The retarding capability is based on a state of charge of the battery and at least one of a weight of the hybrid vehicle or a rolling resistance of the hybrid vehicle.",
  "title": "SYSTEM AND METHOD FOR OPERATING A HYBRID VEHICLE"
}