US4688723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically actuatable fuel-injection valve
Assignee: Mannesmann VDO AG
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Filing: 1986-01-22
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Granted: 1987-08-25
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Expires: 2006-01-22
Abstract
Abstract In a fuel-injection valve, a holding member which bears a plug as atomizing and metering element is inserted in a valve bore. A replaceable diaphragm makes it possible to adjust the precise discharge quantity of the fuel-injection valve by replacement of said diaphragm.
Inventors
- 👤 Eckhart Kern
- 👤 Reiner Weingartner
- 👤 Gerhard Ruschek
- 👤 Arnold Mann
- 👤 Horst Schlick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:11
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/04; F02M61/06; F02M51/00; F02M51/06; F02M51/061; F02M51/0625; F02M51/0635; F02M51/0639; F02M51/08; F02M61/16; F02M61/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
157 words
An electromagnetically actuatable fuel-injection valve for injection systems of internal combustion engines, comprising: a valve housing, and a plug serving as a metering element of the valve and located within a bore of said valve; an armature configured for supporting a magnet winding in stationary relationship to the valve, said armature being located within said valve housing, said armature being disposed coaxially to said bore; a removable stop located on the valve housing and facing away from the injection side of the valve, and a holding element disposed within the valve bore for holding said plug; a closure element forming a gap with said armature, said gap allowing displacement of said closure element relative to said armature and to said holding element for controlling a discharge from the valve; and a diaphragm; and wherein said plug is seated within said diaphragm, and said diaphragm is located between said removable stop and said holding element to be replaceable.
Claim 2
Dependent Claim
157 words
An electromagnetically actuatable fuel-injection valve for injection systems of internal combustion engines, comprising: a valve housing, and a plug serving as a metering element of the valve and located within a bore of said valve; an armature configured for supporting a magnet winding in stationary relationship to the valve, said armature being located within said valve housing, said armature being disposed coaxially to said bore; a removable stop located on the valve housing and facing away from the injection side of the valve, and a holding element disposed within the valve bore for holding said plug; a closure element forming a gap with said armature, said gap allowing displacement of said closure element relative to said armature and to said holding element for controlling a discharge from the valve; and a diaphragm; and wherein said plug is seated within said diaphragm, and said diaphragm is located between said removable stop and said holding element to be replaceable.
Claim 3
Dependent Claim
20 words
An electromagnetically actuatable fuel-injection valve according to claim 1, wherein said plug is cylindrical in a region of said diaphragm.
Claim 4
Dependent Claim
26 words
An electromagnetically actuatable fuel-injection valve according to claim 2, wherein a passage for fuel is formed within said bore alongside a part of said holding element.
Claim 5
Dependent Claim
28 words
An electromagnetically actuatable fuel-injection valve according to claim 3, wherein said fuel passage extends between a part of said holding element and said diaphragm to envelope said plug.
References Cited (Backward Citations)
US2619378A
Cited
DE894789C
Cited
US2860780A
Cited
DE2528683A1
Cited
US4266729A
Cited
US4421278A
Cited
US4452396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |