Fuel supply for internal combustion engines

US7143965B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Michael Lindner · Leutenbach, DE
• Juergen Bauer · Burgkunstadt, DE
• Martin Zimmer · Rheinau, DE
• Claus Westphal · Bornsteiner Straße, DE
• Alexander Redlich · Echterdingen, DE
• Ruediger Bohnsack · Litzendorf, DE
• Peter Rehbein · Rutesheim, DE
• Juergen Hackenberg · Sachsenheim, DE
• Georg Ketteler · Bamberg, DE
• Marcus Rinke · Ludwigsburg, DE
• Jochen Straehle · Waldenbuch, DE

Key dates

• Filing date: Jul 4, 2002
• Grant date: Dec 5, 2006
• Expiry date: Oct 27, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/16
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel supply system, having a housing, in which a pistonlike element is disposed longitudinally displaceably in a bore and is guided sealingly in the bore by a guide portion. On one end, the guide portion adjoins a first fuel-filled chamber, and on its other end it adjoins a second fuel-filled chamber. At least one recess extending at least approximately in the circumferential direction is embodied in the guide portion of the pistonlike element and extends over at least part of the circumference of the pistonlike element and, viewed in the longitudinal direction of the pistonlike element, has an asymmetrical cross section.