Electropneumatic control valve

US5524593A · kind A · utility

Assignee

• PIERBURG GMBH · DE

Inventors

• Albert Denne · Meerbusch, DE
• Werner Buse · Kaarst, DE
• Gerhard Parthe · Korschenbroich, DE

Key dates

• Filing date: May 17, 1995
• Grant date: Jun 11, 1996
• Expiry date: May 17, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M25/0836
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An electropneumatic control valve for regeneration of a fuel absorption element by supply of air to the absorption element includes a valve comprised of a valve seat member (5) and a valve sealing member (4). The valve seat member is displaceable under the action of a pneumatic control section (2B) while the valve sealing member (4) is displaceable under the control of an electromagnetic control section (2A). The operation of the valve members (4, 5), takes place independently of one another by the respective control sections. During strong suction pressures in connector (11), valve seat member (5) is lowered and during the opening stroke of the valve sealing member (4) a minimum opening is provided whereas during low suction pressure at connector (11) the valve seat member (5) is raised and during the opening stroke of the valve sealing member (4) a maximum valve opening is produced. The valve members are slidably and guidably supported in a fixed sleeve (6) provided with calibrated openings (15).