{
  "$type": "site.standard.document",
  "description": "The invention concerns a method of determining the velocity of a pintle assembly in a solenoid fuel injector during a closing stroke of the pintle assembly, wherein a braking step is performed during the closing stroke, which comprises operating an injector driver with current regulator to…",
  "path": "/patents/985165",
  "publishedAt": "2013-04-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D19/024",
    "DELPHI AUTOMOTIVE SYSTEMS LUX [LU]"
  ],
  "textContent": "The invention concerns a method of determining the velocity of a pintle assembly in a solenoid fuel injector during a closing stroke of the pintle assembly, wherein a braking step is performed during the closing stroke, which comprises operating an injector driver with current regulator to establish a braking current in the solenoid coil. The velocity of the pintle assembly is derived from the duty-cycle of the current regulator during the braking step. [0002] A method of operating a solenoid fuel injector, in particular for gaseous fuel, using the so-determined pintle velocity is also disclosed.",
  "title": "Pintle velocity determination in a solenoid fuel injector and control method"
}