Patent US3174291A successfully refreshed from Google Patents.
US5289810A
Expired / Lapsed
US
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Arrangement for supplying fuel from supply tank to internal combustion engine of motor vehicle
Assignee: Robert Bosch GmbH
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Filing: 1993-05-19
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Granted: 1994-03-01
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Expires: 2013-05-19
Abstract
Abstract An arrangement for supplying fuel from a supply container to an internal combustion engine of a motor vehicle, has a supply tank having an interior with a separate chamber, a supply aggregate having a suction side connected with the supply tank and a pressure side connectable with the internal combustion engine, the supply aggregate receiving fuel from the separate chamber of the supply tank, a branching conduit connected with the pressure side of the supply aggregate and having a portion extending near a bottom of the supply tank, an ejector arranged in the portion of the branching conduit and having a pressure pipe opening in the chamber of the supply tank, and a check valve provided in the branching conduit upstream of the ejector as considered in a flow direction of fuel, and opening in the branching conduit after a predetermined limiting pressure has been exceeded.
Inventors
- 👤 Otto Bauer
- 👤 Gerhard Geyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:48
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F02M37/10; F02M37/106; F02M37/02; F02M37/025; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954; Y10T137/86187; Y10T137/86228
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
148 words
An arrangement for supplying fuel from a supply container to an internal combustion engine of a motor vehicle, comprising a supply tank having an interior with a separate chamber; a supply aggregate having a suction side connected with said supply tank and a pressure side connectable with the internal combustion engine, said supply aggregate receiving fuel from said separate chamber of said supply tank; a branching conduit connected with said pressure side of said supply aggregate and having a portion extending near a bottom of said supply tank; an ejector arranged in said portion of said branching conduit and having a pressure pipe opening in said chamber of said supply tank; and a check valve provided in said branching conduit upstream of said ejector as considered in a flow direction of fuel, said check valve opening in said branching conduit after a predetermined limiting pressure has been exceeded.
Claim 2
Dependent Claim
148 words
An arrangement for supplying fuel from a supply container to an internal combustion engine of a motor vehicle, comprising a supply tank having an interior with a separate chamber; a supply aggregate having a suction side connected with said supply tank and a pressure side connectable with the internal combustion engine, said supply aggregate receiving fuel from said separate chamber of said supply tank; a branching conduit connected with said pressure side of said supply aggregate and having a portion extending near a bottom of said supply tank; an ejector arranged in said portion of said branching conduit and having a pressure pipe opening in said chamber of said supply tank; and a check valve provided in said branching conduit upstream of said ejector as considered in a flow direction of fuel, said check valve opening in said branching conduit after a predetermined limiting pressure has been exceeded.
Claim 3
Dependent Claim
35 words
An arrangement as defined in claim 1, wherein said chamber is formed as a cup-shaped container which is fixedly connected with said supply tank, said suction side of said supply aggregate immersing in said container.
Claim 4
Dependent Claim
40 words
An arrangement as defined in claim 1, wherein said check valve has a spring loaded closing member and a valve seat with which said closing member cooperates, said branching conduit having an opening which is surrounded by said valve seat.
Claim 5
Dependent Claim
19 words
An arrangement as defined in claim 1, wherein said check valve is formed as an electromagnetically operating 2/2 valve.
Claim 6
Dependent Claim
19 words
An arrangement as defined in claim 4, wherein said electromagnetically operating valve is closed in condition of no current.
Claim 7
Dependent Claim
19 words
An arrangement as defined in claim 2, wherein said check valve s formed as an electromagnetically operating 2/2 valve.
Claim 8
Dependent Claim
19 words
An arrangement as defined in claim 6, wherein said electromagnetically operating valve is closed in condition of no current.
Claim 9
Dependent Claim
49 words
An arrangement as defined in claim 1; and further comprising a pre-supply conduit for the internal combustion engine, said supply aggregate having an output, said branching conduit being connected with said pre-supply conduit downstream of said output of said supply aggregate as considered in a flow direction of fuel.
Claim 10
Dependent Claim
42 words
An arrangement as defined in claim 1, wherein said supply aggregate includes a plurality of pump stages arranged in a series, said branching conduit being connected between two neighboring ones of said pump stages at said pressure side of said supply aggregate.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-28 | 1997-08-30 | 1998-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-28 | 2001-08-30 | 2002-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-28 | 2005-08-30 | 2006-03-01 | $7700.00 | Window Closed / Lapsed |