Pump unit arranged in an inner tank of a fuel tank of a motor vehicle

US6988491B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Sabine Burhenne · Bretten, DE
• Johannes Deichmann · Lengede, DE
• Joerg Deubner · Bad Hersfeld, DE
• Peter Marx · Hooksett, US
• Hans-Peter Osburg · Bargteheide, DE

Key dates

• Filing date: Jul 12, 2002
• Grant date: Jan 24, 2006
• Expiry date: Jul 12, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60K2015/03236
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a pump unit arranged in an inner tank (3) of a fuel tank, comprising a fuel pump (5) which is used to pump fuel to the internal combustion engine of a motor vehicle; an ejector pump (21) which is connected to the fuel pump (5) and used to pump fuel out of the fuel tank into the inner tank (3); and at least one filter element (20:31) which is used to filter fuel, wherein a housing part which is connected to the fuel pump (5) is provided with at least one channel (30;33;35;47) for guiding said fuel. In order to simplify the structure of the pump unit (2) and to enable substantial pre-assembly, the housing part (24;40) is configured in such a way that it can hold the at least one filter element (20;31), and the channel (30;33;35;47) is exclusively guided inside the housing part (24; 40) from the ejector pump (21) and/or the fuel pump (5) to the filter element (20;31).