{
  "$type": "site.standard.document",
  "description": "An engine control device is provided, which includes an engine body where a cylinder is formed, an exhaust passage through which exhaust gas discharged from the engine body circulates, a NOsensor disposed in the exhaust passage and configured to detect a concentration of NOin the exhaust gas, an…",
  "path": "/patents/1261169",
  "publishedAt": "2020-05-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/1461",
    "Mazda Motor Corporation"
  ],
  "textContent": "An engine control device is provided, which includes an engine body where a cylinder is formed, an exhaust passage through which exhaust gas discharged from the engine body circulates, a NOsensor disposed in the exhaust passage and configured to detect a concentration of NOin the exhaust gas, an injector configured to change an air-fuel ratio inside the cylinder, an in-cylinder temperature changer configured to change a temperature inside the cylinder, and a controller configured to control the injector and the exhaust shutter valve. The controller controls the injector based on a detection value of the NOsensor to variably set the air-fuel ratio inside the cylinder, and when a particular condition that the air-fuel ratio inside the cylinder is leaner than a preset upper limit is satisfied, and causes the in-cylinder temperature changer to raise the temperature inside the cylinder.",
  "title": "ENGINE CONTROL DEVICE"
}