US5012983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforated plate for a fuel injection valve
Assignee: Robert Bosch GmbH
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Filing: 1989-12-06
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Granted: 1991-05-07
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Expires: 2009-12-06
Abstract
Abstract A perforated plate that provides an improvement in a fuel injection valve that is used to inject fuel into the intake tube of a mixture-compressing internal combustion engine having externally supplied ignition. The perforated plate is secured on a nozzle body of a fuel injection valve, in which a tight-seat face is embodied. Cooperating with the tight-seat face is a valve needle, to which an armature is secured, which is actuated electromagnetically by a magnetic coil. The perforated plate is secured downstream of the tight-seat face, and is provided with opposite disposed elongated indentations each of which slope toward and discharge into a cylindrical hole in order to form fanlike streams that are ejected through the cylindrical hole.
Inventors
- 👤 Juergen Buchholz
- 👤 Martin Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:43
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/16; F02M61/18; F02M61/1853; F02M51/00; F02M51/06; F02M51/061; F02M51/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A perforated plate for a fuel injection valve in fuel injection systems of internal combustion engines, in which said perforated plate is disposed downstream of and displaced from a valve seat face provided in a nozzle body, said perforated plate includes at least one cylindrical hole therein, at least one pair of oppositely disposed elongated indentations (10) are provided in said perforated plate (3), said elongated indentations (10) are formed on a side of said perforated plate (3) oriented toward said nozzle body (1) and valve seat face, each of said at least one pair of oppositely disposed indentations slope on an incline from their outer edges downwardly to meet an outer surface of at least one of said at least one cylindrical hole, and each of said at least one pair of oppositely disposed elongated indentations discharge into at least one of said at least one cylindrical hole (9).
Claim 2
Dependent Claim
150 words
A perforated plate for a fuel injection valve in fuel injection systems of internal combustion engines, in which said perforated plate is disposed downstream of and displaced from a valve seat face provided in a nozzle body, said perforated plate includes at least one cylindrical hole therein, at least one pair of oppositely disposed elongated indentations (10) are provided in said perforated plate (3), said elongated indentations (10) are formed on a side of said perforated plate (3) oriented toward said nozzle body (1) and valve seat face, each of said at least one pair of oppositely disposed indentations slope on an incline from their outer edges downwardly to meet an outer surface of at least one of said at least one cylindrical hole, and each of said at least one pair of oppositely disposed elongated indentations discharge into at least one of said at least one cylindrical hole (9).
Claim 3
Dependent Claim
23 words
A perforated plate as defined by claim 1, in which, each of said at least one cylindrical hole (9) is circular-cylindrical in shape.
Claim 4
Dependent Claim
36 words
A perforated plate as defined by claim 2 in which each said oppositely disposed elongated indentations (10) have a width that is approximately equivalent to the corresponding diameter of said at least one cylindrical hole (9).
Claim 5
Dependent Claim
39 words
A perforated plate as defined by claim 3 in which each said oppositely disposed elongated indentation (10) includes outer edges (13) which communicate approximately with the circumference (14) of each of said at least one associated cylindrical hole (9).
Claim 6
Dependent Claim
39 words
A perforated plate as defined by claim 2 in which each said oppositely disposed elongated indention (10) includes outer edges (13) which communicate approximately with the circumference (14) of each of said at least one associated cylindrical hole (9).
Claim 7
Dependent Claim
36 words
A perforated plate as defined by claim 1 in which each said oppositely disposed elongated indentations (10) have a width that is approximately equivalent to the corresponding diameter of said at least one cylindrical hole (9).
Claim 8
Dependent Claim
39 words
A perforated plate as defined by claim 6 in which each said oppositely disposed elongated indentation (10) includes outer edges (13) which communicate approximately with the circumference (14) of each of said at least one associated cylindrical hole (9).
Claim 9
Dependent Claim
38 words
A perforated plate as defined by claim 1 in which each oppositely disposed elongated indentation (10) includes outer edges (13) which communicate approximately with the circumference (14) of each of said at least one associated cylindrical hole (9).
Claim 10
Dependent Claim
27 words
A perforated plate as defined in claim 1 in which said at least one cylindrical hole is axially aligned with a longitudinal axis of said nozzle body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |