Fuel injection nozzle for internal combustion engines

US4340181A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerhard Stumpp · Stuttgart, DE
• Ewald Eblen · Stuttgart, DE
• Karl Hofmann · Neckarrems, DE
• Nestor R. Amaya · Stuttgart, DE
• Josef Schlagenhauf · Eßlingen, DE
• Odon Kopse · Stuttgart, DE

Key dates

• Filing date: May 13, 1980
• Grant date: Jul 20, 1982
• Expiry date: May 13, 2000

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M65/005
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection nozzle for internal combustion engines, in which the valve needle together with the valve seat of the nozzle body forms an electric switch which by its opening and closing indicates the injection onset and the injection duration. A spring-elastic conductive element is disposed inside the closing spring and connects the attachment piece with the valve needle.