Method for producing a combined filtration and calibration assembly
AssigneePhinia Jersey Holdings LLC
InventorsJean-Etienne Blanc, Philippe Legrand
Life of this patent
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Abstract
A combined assembly for filtering and calibrating a fuel injector arranged in an internal combustion engine, the combined filtration and calibration assembly extending along a longitudinal axis and comprising a calibration sleeve provided with a longitudinal bore and defining a multitude of filtration holes. The combined filtration and calibration assembly has a calibrated opening in the bore.
Claims1
A method for producing a combined filtration and calibration assembly of a fuel injector arranged in an internal combustion engine, the combined filtration and calibration assembly extending along a longitudinal axis and comprising a single calibration sleeve provided with a longitudinal bore and defining a multitude of filtration holes, the combined filtration and calibration assembly having a calibrated orifice in the bore, said method comprising, in the following order, the steps of:
- rolling up a tube made of stainless steel to form said calibration sleeve with said longitudinal bore;
- inserting a circular plate into the tube, said calibrated orifice being provided at a center of said circular plate with a calibrated hole opening on both sides of said circular plate;
- crimping the circular plate;
- and then
- subsequent to the steps of rolling up the tube, inserting the circular plate into the tube, and crimping the circular plate, performing the step of drilling the filtration holes using a laser.
Dependencies are inferred from the claim text.