Aggregate for feeding fuel from a supply tank to internal combustion engine of motor vehicle

US5449269A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Kurt Frank · Schorndorf, DE
• Juergen Treiber · Munich, DE

Key dates

• Filing date: Apr 1, 1994
• Grant date: Sep 12, 1995
• Expiry date: Apr 1, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D5/002
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An aggregate for feeding fuel from a supply tank to an internal combustion engine of a motor vehicle has a fluid pump having an impeller with a plurality of vanes distributed over its periphery on its both end surfaces, elements forming a pump chamber in which the impeller is rotated and including two wall parts limiting the pump chamber in direction of a rotary axis of the impeller at both sides and a housing part limiting the pump chamber in a radial direction, each of the wall parts having an end surface facing the impeller and being provided with a substantially ring-shaped feeding passage, at least one of the feeding passages having a connection with a suction side of the flow pump and at least the other of the feeding passages has a connection with a pressure side of the flow pump. The impeller and the housing part are arranged so that a radial gap between an outer surface of the impeller and an inner surface of the housing part at least in a peripheral region of the housing part in which the connection of the one feeding passage with the suction side is provided has such a size that a suction passage is formed through which the other feeding passage is also connected with th…