Fuel injection pump for internal combustion engines

US4897024A · kind A · utility

Assignee

• MOTORENFABRIK HATZ GMBH & CO. KG

Inventors

• Ernst Hatz · Ruhstorf, DE
• Hans A. Kochanowski · Ruhstorf, DE
• Erich Absenger · Passau, DE

Key dates

• Filing date: May 10, 1988
• Grant date: Jan 30, 1990
• Expiry date: May 10, 2008

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M45/066
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection pump for self-ignition internal combustion engines, comprising at least one pump piston which is movably arranged in a piston sleeve and, during its stroke, in one direction draws fuel from the suction side into the working chamber of the pump and in the other direction of travel first cuts off the connection to the suction side and then commences delivery, which is divided into pre-injection and main injection, from the working chamber to the injection nozzle.