Device for fuel injection in combustion chambers

US4603667A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

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

Key dates

• Filing date: Oct 19, 1984
• Grant date: Aug 5, 1986
• Expiry date: Oct 19, 2004

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23Q7/001
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Device for fuel injection in combustion chambers of, in particular, selfigniting combustion engines with an injection nozzle (10) and a subsequently switched incandescent wire (20) which has a conduit (30) surrounded by a double heating layer (33) on the inside for passing through of the injection streams. The double heating layer (33) consists of an inner heating layer (35) which is separated from a second heating layer (37) by an electrical insulator. In the parallel as well as the series switching of the two heating layers (35,37), a two stage heating of the double heating layer (33) is possible. The inner heating layer (35) reaches the required end temperature required for ignition in a relative short time, while the second heating layer (37) assures a high energy density of the ceramic support mass (38).