{
  "$type": "site.standard.document",
  "description": "A vehicle system including a propulsion system coupled to a drive wheel and a friction brake configured to apply braking torque to a vehicle wheel is described. Operation thereof includes an instruction set that is executable to monitor vehicle speed, vehicle grade, and an operator braking request…",
  "path": "/patents/1266721",
  "publishedAt": "2020-07-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60W10/184",
    "GM Global Technology Operations LLC"
  ],
  "textContent": "A vehicle system including a propulsion system coupled to a drive wheel and a friction brake configured to apply braking torque to a vehicle wheel is described. Operation thereof includes an instruction set that is executable to monitor vehicle speed, vehicle grade, and an operator braking request, and execute instructions upon achieving a vehicle speed that is less than a threshold speed. The instructions include controlling, via the friction brake, the braking torque to achieve a desired vehicle speed, and determining an operator acceleration request and the vehicle grade. The controller determines a minimum vehicle grade-based operator acceleration request, and releases the friction brake only when the operator acceleration request is greater than the minimum vehicle grade-based operator acceleration request.",
  "title": "METHOD AND APPARATUS TO CONTROL VEHICLE OPERATION ON A GRADE"
}