Device for supplying internal combustion engine with fuel from supply container

US5794597A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Helmut Schwegler · Pleidelsheim, DE
• Kurt Frank · Schorndorf, DE
• Ansgar Seitz · Bad Liebenzell, DE
• Wolfgang Bueser · Freiberg, DE
• Uwe Talmon · Rochlitz, DE

Key dates

• Filing date: Oct 28, 1996
• Grant date: Aug 18, 1998
• Expiry date: Oct 28, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60K2015/03453
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The device has a feed pump arranged in the supply tank (12), which can be inserted through an opening (20) in the supply tank (12). The opening (20) is closed by means of a closure element (22) on which a pressure regulator is disposed, which is connected with the pressure side of the feed pump and with the internal combustion engine, and which can be connected with a relief chamber (12). The closure element (22) has a base body (30) made of plastic, in which a depression (40) has been formed, which is closed by means of an elastic diaphragm (52), so that a pressure chamber is formed. A connector (45) projects into the depression (40), which is connected with the relief chamber (12) and whose front end (51) can be closed by means of a flattened ball (74), which is movably seated in a support element (70) connected with the diaphragm (52). The diaphragm (52) is clamped between a retaining element (54) and the base body (30), and the ball (74) is pressed with its flattened area (75) against the front end (51) of the connector (45) by means of a pre-stressed spring (60) acting on the diaphragm (52). When a defined pressure is exceeded in the pressure chamber, the diaphragm (52) is lif…