Control valve, in particular an electrohydraulic control valve

US4655254A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Gunther Hafner · Stuttgart, DE
• Karl-Ernst Noreikat · Eßlingen, DE
• Hans-Dieter Schmidt · Wissen, DE
• Ulrich Letsche · Stuttgart, DE
• Bernhard Bauer · Lebring, AT

Key dates

• Filing date: Dec 20, 1985
• Grant date: Apr 7, 1987
• Expiry date: Dec 20, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86622
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A control valve, in particular, an electrohydraulic control valve for controlling the injection pump of a diesel engine, incorporates a slider which is guided in a housing, in a manner permitting movement in the axial direction, the housing possessing radial flow-ports and, in the region of the inner peripheral surface, at least one annular space carrying a fluid. In order to ensure that the control-valve housing can be manufactured economically, the annular space is formed by a plurality of flow-ports which intersect in the region of the inner peripheral surface of the housing and pierce the housing radially.