Injection valves for liquid-fuel mixtures and associated processes

US5669334A · kind A · utility

Assignee

• MTU Motoren-und Turbinen-Union Friedrichshafen GmbH · DE

Inventors

• Dieter Schonfeld · Markdorf, DE
• Bernhard Bachle · Friedrichshafen, DE
• Martin Freitag · Munich, DE
• Torsten Guth · Gerswalde, DE

Key dates

• Filing date: Dec 27, 1995
• Grant date: Sep 23, 1997
• Expiry date: Dec 27, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M47/027
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Injection system for the intermittent introduction of a fuel-liquid mixture into the combustion spaces of an internal-combustion engine with a common-rail pressure reservoir. Lines (16, 30) lead to control spaces (15, 22) of control valves (1). Control space (15) is joined selectively with the common-rail pressure reservoir or a line (18) with a pressure p0 or a line with a pressure p1 for control of injection quantities of the fuel-liquid mixture. Control space (22) is joined selectively to the common-rail pressure reservoir or to a line with pressure p2 or to a line (33) with pressure p0 for control of the liquid fraction of the injection quantity.