Hydraulically controlled accumulator-chamber valve

US8656960B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Juergen Haecker · Neu-Anspach, DE
• Daniel Gosse · Berlin, DE

Key dates

• Filing date: Dec 19, 2012
• Grant date: Feb 25, 2014
• Expiry date: Dec 19, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B2201/411
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A hydraulically controlled accumulator-chamber valve has a closing element and a tappet. The closing element is prestressed via a first compression spring and seals a valve seat in a valve body. The tappet reaches through a leadthrough in the valve body and is moved by an accumulator piston. The accumulator piston is loaded by a second compression spring. The tappet is moved to press the closing element out of the valve seat when there is a specified balance of forces between the spring prestressing forces and a hydraulically active force. The closing element and the tappet are configured as a single-piece component, in order to guide the tappet in the leadthrough in a longitudinally movable manner. The tappet bears against an end face of the accumulator piston during an opening movement.