Fuel cell system, gas tank device and shut-off valve for a gas tank device

US12366332B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Andreas Rau · Stuttgart, DE
• Joachim Soubari · Ettlingen, DE
• Udo Schaich · Stuttgart, DE

Key dates

• Filing date: May 18, 2022
• Grant date: Jul 22, 2025
• Expiry date: Aug 25, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F17C2270/0184
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a shut-off valve comprising: a housing which has an inlet opening, an outlet opening and a control opening, wherein the housing defines an inner space extending along a longitudinal axis and has a partition which divides the inner space into an outlet chamber and a control chamber and has a guide hole which extends between the outlet chamber and the control chamber; an electrical coil which is accommodated in the partition and surrounds the guide hole; a servo valve needle which is arranged in the control chamber, is preloaded along the longitudinal axis into a closed position in which it seals the control opening, and can be moved, by means of a magnetic field which can be generated by the coil, into an open position in which it exposes the control opening and abuts the partition, wherein the servo valve needle has a connecting channel which connects the control chamber to the guide hole in the open position of the servo valve needle; and a main valve needle which is movably guided in the guide hole along the longitudinal axis, is preloaded along the longitudinal axis into a closed position in which it seals the outlet opening, and, when the servo valve ne…