Device for injecting fuel in combustion chambers

US4572146A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Werner Grunwald · Gerlingen, DE
• Ernst Imhof · Münchingen, DE
• Iwan Komaroff · Regensburg, DE
• Rolf Mayer
• Gunther Schmid · Lons-le-Saunier, FR

Key dates

• Filing date: Jan 25, 1985
• Grant date: Feb 25, 1986
• Expiry date: Jan 25, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23Q7/001
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A device for injecting fuel in combustion chambers, especially for self-igniting internal combustion engines, is proposed, in which a fuel injection nozzle, by aspirating air through an air guide device in the manner of a jet pump, generates a fuel spray that is surrounded by an air envelope. This air-enveloped fuel spray is directed through a heating element, the heat generation of which is distributed in such a manner over its length that a desired heating profile along the heating element is produced. The type of heating profile depends not only on the properties of the material making up the heating resistor but also on its structural makeup and its electrical bonding. A highly suitable material for the heating resistor is molybdenum silicide (MoSi.sub.2).