Fuel injection system

US4395988A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heinrich Knapp · Leonberg, DE
• Mathias Linssen · Scheßlitz, DE
• Jurgen Peczkowski · Gunzenhausen, DE
• Waldemar Hans · Bamberg, DE

Key dates

• Filing date: Mar 20, 1981
• Grant date: Aug 2, 1983
• Expiry date: Mar 20, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S239/90
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection system for internal combustion engines having a multiplicity of injection valves which serves to provide fuel supply is proposed. The fuel injection system includes a common, rigid fuel line, having plug nipples into which the injection valves associated with the individual cylinders of the engine can be inserted in a sealing manner. The fuel line comprises one fuel distributor line and one fuel return flow line located one above the other. Each injection valve has one inlet stub and one outlet stub disposed concentrically relative to one another, protruding into the plug nipple in such a manner that the inflow stub communicates with the fuel distributor line and the outflow stub communicates with the fuel return flow line. As a result, not only is it possible to provide simple sealing toward the outside between the injection valve and the plug nipple but also rapid assembly of the fuel injection system is assured.