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1. (WO2014198687) FUEL SUPPLY SYSTEM

Pub. No.:    WO/2014/198687    International Application No.:    PCT/EP2014/061967
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Wed Jun 11 01:59:59 CEST 2014
IPC: F02M 37/00
B60K 15/03
F02M 37/18
F02M 37/22
Applicants: MAHLE INTERNATIONAL GMBH
Inventors: GÄNSWEIN, Matthias
WETZEL, Jörn
JAUSS, Stefan
Title: FUEL SUPPLY SYSTEM
Abstract:
The invention relates to a fuel supply system (1) of an internal combustion engine (2), comprising a first tank (3) and a second tank (4) which are connected to each other via a fuel line (5). A first fuel pump (6) and a first fuel filter (7) are arranged between the first and the second tank (3, 4), whereas a second fuel pump (12) and a second fuel filter (11) are arranged between the second tank (4) and the internal combustion engine (2). It is essential to the invention that - a first return line (13) is provided which is connected to the internal combustion engine (2) on the inlet side and opens into the second tank (4) on the outlet side and into the fuel line (5) upstream of the first fuel filter (7), - a preheating valve (14) is arranged in the first return line (13), and - the second tank (4) is connected to the first tank (3) via a second return line (15).