Tribologically loaded component and accompanying gas engine or internal combustion engine

US7455906B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Stefan Grosse · Gerlingen, DE
• Sascha Henke · Weil der Stadt, DE
• Rainer Feuerfeil · Gerlingen, DE
• Andreas Gross · Solingen, DE

Key dates

• Filing date: Dec 18, 2003
• Grant date: Nov 25, 2008
• Expiry date: Dec 18, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

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.