Patent · US Expired

Fuel supply apparatus for an internal combustion engine of a motor vehicle

US6457459B1 · kind B1 · utility

9Cited by

6References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Peter Schelhas · Stuttgart, DE
Hans-Peter Braun · Sulz am Neckar, DE
Stefan Woerz · Lambach, DE

Key dates

Filing date	Oct 18, 2000
Grant date	Oct 1, 2002
Priority date	—
Expiry date	Oct 18, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M37/025
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The fuel supply apparatus has a reservoir (14) arranged within a fuel tank (12) from which fuel is drawn by a fuel feed unit (16) and supplied to an internal combustion engine (10). Unburned fuel from the internal combustion engine (10) is fed back into the fuel tank (12) via a return line (30). A control valve (34) is arranged in the return line (30), by which a connection of the return line (30) with a jet pump (38) is controlled, which supplies fuel from the fuel tank (12) to the reservoir (14). The control valve (34) has a floating body floating on the fuel in the reservoir (14) when it is nearly filled or completely filled, by which a control element of the control valve (34) is movable. When the reservoir (14) is not in its maximum filled state (hmax) the jet pump (38) is connected with the return line (30), but when the reservoir (14) is in its maximum filled state (hmax) the jet pump (38) is disconnected from the return line (30), which then opens into the reservoir (14). Overflow of fuel from the reservoir when it is filled is thereby reduced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.