{
  "$type": "site.standard.document",
  "description": "Method and apparatus for controlling a vehicle so as to purify an exhaust emission from an internal combustion engine (1) with an exhaust-emission purifying catalyst (5) disposed in an exhaust system of the engine (1), and such that the engine (1) is brought into a temporary engine-stop state while…",
  "path": "/patents/1103055",
  "publishedAt": "2002-07-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K6/445",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "Method and apparatus for controlling a vehicle so as to purify an exhaust emission from an internal combustion engine (1) with an exhaust-emission purifying catalyst (5) disposed in an exhaust system of the engine (1), and such that the engine (1) is brought into a temporary engine-stop state while a predetermined vehicle condition is satisfied, wherein the engine (1) is operated for heating the catalyst (5), when a temperature of the catalyst (5) has been lowered below a predetermined lower limit threshold (Tcc1), even while the predetermined vehicle condition is still satisfied. The catalyst (5) maintains an exhaust-emission purifying ability at a temperature above the lower limit threshold. When the catalyst temperature has been raised to a predetermined upper limit threshold (Tcc2), as a result of the engine operation, the engine (1) is restored to the temporary engine-stop state if the predetermined condition is still satisfied. The present method and apparatus permit the catalyst temperature to be held at a level higher than the activation lower limit (Tcc1), while minimizing the reduction of an effect of the temporary engine stop in an economy-running-system vehicle or hybrid vehicle.",
  "title": "Apparatus and method for controlling vehicle so as to purify exhaust emission from engine"
}