Fuel filter for cleaning fuel for an internal combustion engine

US11020693B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Michael Braunheim · Göppingen, DE
• Matthias Gaenswein · Eßlingen, DE
• Uli Haeussermann · Fellbach, DE
• Stephan Schild · Leingarten, DE
• Dietmar Wilhelm · Wiernsheim, DE

Key dates

• Filing date: May 22, 2019
• Grant date: Jun 1, 2021
• Expiry date: May 22, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M37/025
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A fuel filter for cleaning fuel for an internal combustion engine may include a main filter and a prefilter arranged upstream of the main filter, through which a fuel is successively flowable. The prefilter may include a water separator configured to separate water present in the fuel. The water separator may include a water collection chamber structured and arranged to collect the separated water. The prefilter fluidically connected to the main filter via a conveying device structured and arranged to convey the fuel from the prefilter into the main filter. The conveying device may be configured to provide an excess pressure build up. The fuel filter may also include a suction jet pump fluidically connected to the water collection chamber via which at least one of the fuel and the water is dischargeable from the water collection chamber.