{
  "$type": "site.standard.document",
  "description": "System for desulfating a nitrogen oxide trap associated with an oxidation catalyst on a common support in the exhaust system of an automobile diesel engine with a common rail fuel injection system capable of adopting two lean burn strategies comprises devices for running the engine according to…",
  "path": "/patents/1070715",
  "publishedAt": "2006-01-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0245",
    "PEUGEOT CITROEN AUTOMOBILES SA [FR]"
  ],
  "textContent": "System for desulfating a nitrogen oxide trap associated with an oxidation catalyst on a common support in the exhaust system of an automobile diesel engine with a common rail fuel injection system capable of adopting two lean burn strategies comprises devices for running the engine according to different strategies based on exhaust temperature. System for desulfating a nitrogen oxide trap associated with an oxidation catalyst on a common support in the exhaust system of an automobile diesel engine with a common rail fuel injection system capable of adopting two lean burn strategies, namely level 1 and 2 strategies corresponding to increasing exhaust temperatures, comprising a device for detecting a desulfation request, sensors for measuring the temperature upstream and downstream of the nitrogen oxide trap and oxidation catalyst to define an operating point (P1), a device for comparing P1 with predetermined lower and upper limiting curves (C1, C2) to run the engine in rich mode if P1 is within the range defined by C1 and C2 or in lean mode if P1 is outside this range, and a device for comparing P1 with predetermined lower and upper limiting curves (C3, C4) to run the engine according to the level 2 strategy if P1 is within the range defined by C3 and C4 or according to the level 1 strategy if P1 is outside this range.",
  "title": "System for desulfurization of a NOx trap disposed in an exhaust line of a vehicle diesel motor"
}