{
  "$type": "site.standard.document",
  "description": "There is provided a method of operating a hybrid-vehicle drive system in which an internal combustion engine (1), a first electric motor (8) and a second electric motor (12) are combined to provide a driving source for a hybrid vehicle, wherein an output shaft (2) of the internal combustion engine…",
  "path": "/patents/1078852",
  "publishedAt": "2005-04-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K6/365",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "There is provided a method of operating a hybrid-vehicle drive system in which an internal combustion engine (1), a first electric motor (8) and a second electric motor (12) are combined to provide a driving source for a hybrid vehicle, wherein an output shaft (2) of the internal combustion engine (1) and the first electric motor (8) are connected via a power distribution mechanism (3) to a wheel drive shaft (11), a transmission (100) having a plurality of gear positions is provided on the wheel drive shaft (11), and the wheel drive shaft (11) is connected via a connecting portion (16) to the second electric motor (12). The method comprises steps of: setting a gear position of the transmission (100) to a first gear position having a predetermined high-speed gear ratio as a first gear ratio, and maintaining the transmission in the first gear position irrespective of changes in a vehicle speed, as long as the hybrid-vehicle drive system is able to provide a required value of a torque at vehicle axles while the internal combustion engine (1) is operated at a high fuel efficiency.",
  "title": "Method of operating a hybrid-vehicle drive system"
}