Thermal insulating sleeve

US6196195A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Ralf Trutschel · Naumburg, DE
• Guido Pilgram · Schwieberdingen, DE
• Rainer Norgauer · Stuttgart, DE
• Christian Preussner · Markgröningen, DE

Key dates

• Filing date: May 26, 1999
• Grant date: Mar 6, 2001
• Expiry date: May 26, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M53/04
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A thermal insulating sleeve for a fuel injection valve, which can be inserted in a mounting hole of a cylinder head of an internal combustion engine, has a sleeve body which at least partially envelops a nozzle body of the fuel injection valve. At the injection end of the sleeve body there is a folded-back section, in which the sleeve body has a two-layered configuration, and there is a conical section, which tapers in the direction toward the injection end and which in the assembled state fits tightly against the tapered section of the nozzle body.