Electromagnetically actuatable valve

US4982902A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heinrich Knapp · Leonberg, DE
• Mathias Linssen · Scheßlitz, DE
• Jurgen Peczkowski · Gunzenhausen, DE
• Alfred Konrad · Bamberg, DE

Key dates

• Filing date: Mar 20, 1981
• Grant date: Jan 8, 1991
• 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

An electromagnetically actuatable valve is proposed, which serves in particular to inject into the intake tube a mixture-compressing internal combustion engines with externally-supplied ignition. The valve includes a flat armature which is firmly connected with a ball arranged to cooperate with a fixed valve seat. The flat armature is pivotally supported on its end remote from the valve seat on a spring tongue preferably embodied out of a remnant air disc. A tubular inflow stub is disposed concentrically to the valve axis, communicating on one end with a fuel distributor line and on the other end protruding as deeply as possible into the valve. A tubular outlet stub leading away from the valve seat is concentrically guided in the inlet stub, and arranged to have its end remote from the valve seat discharge into a fuel return flow line. As a result, a cooling of the valve and the return of heated fuel which contains vapor bubbles to its supply source is assured.