{
  "$type": "site.standard.document",
  "description": "A method for controlling an exhaust gas recirculation apparatus for heavy construction equipment of the present invention, which includes: an engine; a turbocharger which rotates a turbine by using exhaust gas discharged from the engine, and compresses air, which is supplied to the engine, by a…",
  "path": "/patents/981413",
  "publishedAt": "2013-12-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B47/08",
    "DOOSAN INFRACORE CO LTD [KR]"
  ],
  "textContent": "A method for controlling an exhaust gas recirculation apparatus for heavy construction equipment of the present invention, which includes: an engine; a turbocharger which rotates a turbine by using exhaust gas discharged from the engine, and compresses air, which is supplied to the engine, by a compressor connected to the turbine through a connecting shaft; an intercooler which cools compressed air flowing into the engine; a high-pressure EGR line which is provided with a high-pressure EGR cooler and a high-pressure EGR valve, and does not pass through the turbocharger; a hybrid EGR line which is provided with a hybrid EGR valve and a hybrid EGR cooler, and does not pass through the turbine of the turbocharger but passes only through the compressor; and a low-pressure EGR line which is provided with a low-pressure EGR valve and a low-pressure EGR cooler, and passes through the turbocharger, includes a mechanical control step in which an engine control unit (ECU), which receives a low-load request signal from a driver, or driving and idle signals, opens the hybrid EGR valve (151) of the hybrid EGR line (150) such that mechanical control and electronic control are performed in harmony for optimized control.",
  "title": "METHOD FOR CONTROLLING AN EXHAUST GAS RECIRCULATION APPARATUS FOR HEAVY CONSTRUCTION EQUIPMENT"
}