The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2015
Filed:
Nov. 30, 2010
Marco Lamm, Leonberg, DE;
Marco Lamm, Leonberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A system () for feeding fuel from a tank () to an internal combustion engine () has:—an electrically actuated pre-feed variable-flow electric pump (); —a high-pressure piston pump () having a pump casing () and piston movement mechanism () housed in the pump casing (); and—a hydraulic circuit () comprising a first branch () for connecting the tank () to the pre-feed pump (), a second branch () for connecting the pre-feed pump () to the high-pressure piston pump () and a third branch () for connecting the high-pressure piston pump () to the internal combustion engine (); wherein the second branch () is configured to branch downstream of the pre-feed pump () into a first channel () structured for conveying part of the fuel to the intake of the high-pressure piston pump () and for connecting the pre-feed pump () directly to the intake of the high-pressure piston pump (), and into a second channel () structured for conveying part of the fuel in the casing () and for connecting the pre-feed pump () to the casing () making the fuel flow solely through at least one calibrated hole ().