{
  "$type": "site.standard.document",
  "description": "Provided is an internal combustion engine emission control technology that includes: split passages (20, 30) that divide exhaust gas discharged from an internal combustion engine (1) into a plurality of streams; particulate filters (A, B) that are provided individually in the split passages (20…",
  "path": "/patents/1092440",
  "publishedAt": "2003-10-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D53/9454",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "Provided is an internal combustion engine emission control technology that includes: split passages (20, 30) that divide exhaust gas discharged from an internal combustion engine (1) into a plurality of streams; particulate filters (A, B) that are provided individually in the split passages (20, 30), and that remove a component present in the exhaust gas at a high removal rate if a temperature of the exhaust gas that inflows via the split passages (20, 30) satisfies a predetermined temperature condition; and exhaust choke valves (24, 34) that change proportions of amounts of flow of the exhaust gas into the split passages (20, 30) so that the predetermined temperature condition is satisfied in at least one split passage (20, 30) of the split passages. Therefore, it becomes possible to perform emission control over a broadened range of changing temperatures of the exhaust gas. Furthermore, even in a situation where the emission removal rate normally drops, emission control can be performed while avoiding reduction in the emission removal rate as much as possible.",
  "title": "Internal combustion engine emission control apparatus and method"
}