{
  "$type": "site.standard.document",
  "description": "An internal combustion engine (1) has a particle filter (10) with temperature (11,13) and pressure sensors (14,15) and an input air flow meter (6). A control unit (12) receives the data and calculates the trapped mass from a formula which links it with pressure difference and air flow and uses…",
  "path": "/patents/1098531",
  "publishedAt": "2003-02-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N9/002",
    "RENAULT SA [FR]"
  ],
  "textContent": "An internal combustion engine (1) has a particle filter (10) with temperature (11,13) and pressure sensors (14,15) and an input air flow meter (6). A control unit (12) receives the data and calculates the trapped mass from a formula which links it with pressure difference and air flow and uses coefficients which take account of the accretion of incombustible material with length of use.",
  "title": "Method to determine the loading state of a particulate filter"
}