{
  "$type": "site.standard.document",
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  "description": "A method of controlling an injector (1) or the like suitable for use in an internal combustion engine, includes providing a first data map having a plurality of first data map points, each of the first data map points representing a first data map output value, and providing a function map (40)…",
  "path": "/patents/1093221",
  "publishedAt": "2003-09-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/2416",
    "DELPHI TECH INC [US]"
  ],
  "textContent": "A method of controlling an injector (1) or the like suitable for use in an internal combustion engine, includes providing a first data map having a plurality of first data map points, each of the first data map points representing a first data map output value, and providing a function map (40) comprising a second data map (46; 146) having a plurality of second data map points, each corresponding to a respective one of the first data map points, and wherein the second data map is divided into at least a first-type data map region containing second data map points representing second data map output values only of a first type (Y, O) and a second-type data map region containing second data map points representing second data map output values only of a second type (Y, O), wherein a portion of the second data map (46; 146) defines a hysteresis region (52). The method also includes determining an operating point on an operating path (50; 150) within the second data map (46; 146) in dependence upon first and second engine operating parameters (4a, 4b) and determining a control function for the injector (1) based on a first data map output value determined from the first data map and the second data map output value determined from the second data map (46; 146), in dependence upon whether the operating point in the second data map (46; 146) lies in a part of the first-type data map region which is outside the hysteresis region (52), or whether the operating point in the second data map (46; 146) lies in a part of the first-type data map region which is within the hysteresis region (52).",
  "title": "Controller and control method for injection using function map"
}