Robert Boschgmbh

Rainer Feuerfeil

Stefan Grosse

Sascha Henke

Alexander Schattke

Günter Schneider

Andreas Gross

Michael Fraune

A method for carbon deposition using a pulsed, plasma-supported vacuum arc discharge, having an anode, a target cathode made of carbon, a pulsed energy source and at least two ignition units. The at least two ignition units are positioned in the edge area of target cathode and each have two planar metallic electrodes and a planar ceramic insulator positioned between the electrodes. The planar shape of ignition units and their positioning on target cathode enables homogeneous utilization of the entire target surface and homogeneous coating of workpieces.

Device for carbon deposition

A tribologically loaded component, in particular an injection needle, an injection valve, or a component of a combustion-engine injection system. This component has a surface region, which moves in relation to a counterbody during operation, is tribologically loaded in the process, and is provided with a first coating. This first coating has a first layer of diamond-like carbon having a hydrogen level of at least 30 atom %. Additionally provided is a gas engine or an internal combustion engine, which is driven by a dry gas, such as natural gas or hydrogen, as a fuel, or is driven under oil-free and/or water-free combustion conditions, and has such a tribologically loaded component.

Tribologically loaded component and accompanying gas engine or internal combustion engine

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Gerlingen, Germany

Rainer Feuerfeil