Pressure regulator for hydrogen storage system

US9074703B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Rainer Pechtold · Idstein, DE
• Dimitri A. Podorashi · Weiterstadt, DE
• Hans Weidner · Darmstadt, DE
• Wolfgang Markard · Flörsheim, DE

Key dates

• Filing date: Oct 28, 2008
• Grant date: Jul 7, 2015
• Expiry date: Jan 4, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7793
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A pressure regulator for a hydrogen storage system, wherein the pressure regulator is adapted to operate at temperatures below −50° C., while minimizing the need for separate sealing elements and O-rings. The pressure regulator includes a main body including an inner cavity bounded by an interior wall, a piston disposed in the inner cavity, the piston including a first channel disposed adjacent a first portion, wherein the first portion is adapted to cooperate with the interior wall to form a seal between the piston and the interior wall, a first biasing device disposed in the first channel, wherein the first biasing device is adapted to exert a force on the first portion of the piston to form a seal between the first portion and the interior wall, and an end cap coupled to the main body thereby enclosing the piston to form an outlet pressure chamber.