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AssigneeStoba Holding GmbH & Co., KG
InventorsOliver Gunther, Markus GÜNTHER, Thomas HÖG, Hans-Joachim KONIETZNI, Matthias LEICHTLE, Klaus PFENDTNER, Ulrich WAGNER
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The present application concerns a fuel-injection metering device for a motor vehicle. The fuel-injection device include a main body with at least one through-hole, whereby the main body forms a valve seat on its inner face that is provided to interact with a valve body, whereby the inner face of the main body is electrochemically machined. The application also concerns a mould, a production method, and a fuel-injection nozzle.
Fuel-injection metering device for a motor vehicle which comprises a main body with at least one through-hole, whereby the main body forms a valve seat on its inner face which is provided to interact with a valve body in order to seal and open the through-hole, and whereby several longitudinal grooves extending in a radial direction are provided on the inner face of the main body which are separated by ridges and the inner face of the main body is electrochemically machined, characterized in that the ridges are electrochemically rounded in the transition area to the longitudinal grooves).
Mould for producing a fuel-injection metering device, with an electrically chargeable cathode, whereby the cathode exhibits at one end an electrically insulating layer through which an engagement section of the cathode protrudes, characterized in that the engagement section is surrounded by segment-like insulation sections running in an axial direction, between which active areas of the cathode are uncovered.
Dependencies are inferred from the claim text.