Injection internal combustion engine

US3946712A · kind A · utility

Assignee

• Motorengabrik Hatz KG.

Inventors

• Gottfried Hatz
• Heinz Eibl · Ruhstorf, DE

Key dates

• Filing date: Jul 25, 1974
• Grant date: Mar 30, 1976
• Expiry date: Jul 25, 1994

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B3/06
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An improvement in an injection internal combustion engine having at least one fuel injection pump therein which is connected to the fuel supply tank through a suction conduit having a check valve connected in circuit therewith. Fuel which is not injected into the internal combustion engine is returned to the supply tank through another check valve located in a separate conduit from the suction conduit. The check valve in the separate conduit, when it is in its seated position, permits a small flow of fuel between the injection pump and the separate conduit.