{
  "$type": "site.standard.document",
  "description": "The invention describes a method and an apparatus for charging a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized in that the piezoelectric element is activated by an activation voltage…",
  "path": "/patents/1109559",
  "publishedAt": "2001-10-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/2096",
    "BOSCH GMBH ROBERT [DE]"
  ],
  "textContent": "The invention describes a method and an apparatus for charging a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized in that the piezoelectric element is activated by an activation voltage having a value set as a function of a capacitance of the piezoelectric element, the capacitance being determined based upon a measured activation energy for charging the piezoelectric element and based upon, for example, a correction value for injected fuel volume.",
  "title": "Method and apparatus for charging a piezoelectric element"
}