Device for conveying fuel from a tank to the internal combustion engine of a motor vehicle

US6415771B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Steffen Mihatsch · Ludwigsburg, DE
• Willi Strohl · Beilstein, DE
• Erich Eiler · Sersheim, DE

Key dates

• Filing date: Mar 2, 2001
• Grant date: Jul 9, 2002
• Expiry date: Mar 2, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86212
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An apparatus for pumping fuel from a tank (10) to the internal combustion engine (12) of a vehicle has a jet pump (24), which supplies fuel returning from the internal combustion engine (12) in a return line (22) together with fuel disposed in the tank (10) into a storage reservoir (14) of a fuel delivery unit (16). The invention proposes embodying a restriction (23) for the fuel between a seat edge (31) and a spring-loaded ball (32). In addition, inlet openings (39) for the fuel disposed in the tank (10) are embodied in the vicinity of the restriction (23). The apparatus has the advantage of a high delivery output, a compact design, and a delivery onset even when there are relatively low return quantities. Furthermore, fuel is prevented from flowing back into the return line (22).