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US5199641A
Expired / Lapsed
US
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Fuel injection nozzle with controllable fuel jet characteristic
Assignee: Siemens AG
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Filing: 1989-09-28
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Granted: 1993-04-06
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Expires: 2009-09-28
Abstract
Abstract A fuel injection nozzle for a combustion engine not only has a valve for alternately opening and closing the nozzle, but also has a part which undergoes alternating stroke movement, either longitudinally or transversely. The alternating stroke movement changes the opening angle of the nozzle opening. The alternating stroke movement is in a frequency range of approximately 5 to 20 kiloHertz.
Inventors
- 👤 Dietmar Hohm
- 👤 Peter Kleinschmidt
- 👤 Hans Meixner
- 👤 Dieter Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:26
CPC Classifications
F; F02; F02M; F02M45/00; F02M45/12; F02M45/02; F02M45/10; F02M51/00; F02M51/06; F02M51/0603; F02M51/061; F02M51/0696; F02M51/08; F02M69/00; F02M69/04; F02M69/041; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
210 words
A fuel injection nozzle for combustion engines, comprising: a nozzle bore arranged in a nozzle part, a nozzle needle within the nozzle part, a drive connected to the nozzle needle, said drive having an electrical input for receiving an electrical input variable to cause the nozzle needle to be moved into a closing position, in which said nozzle needle closes the nozzle bore, and alternately into an open position, in which said nozzle needle frees the nozzle bore, and means for imparting, during the open position of the nozzle needle, an alternating stroke movement to at least one of said nozzle part and said nozzle needle which is situated in a region of formation of an injection jet, said means for imparting being excitable by a further electrical input variable and being designed structurally in such a way that a period for the alternating stroke movement is many times smaller than a predetermined minimum opening time of the injection nozzle, said means for imparting imparts the alternating stroke movements with a period which corresponds to an excitation frequency of between 5 kHz and 20 kHz, and said means for imparting alters an opening angle of the injection jet of the injection nozzle under control of the further electrical input variable.
Claim 2
Dependent Claim
210 words
A fuel injection nozzle for combustion engines, comprising: a nozzle bore arranged in a nozzle part, a nozzle needle within the nozzle part, a drive connected to the nozzle needle, said drive having an electrical input for receiving an electrical input variable to cause the nozzle needle to be moved into a closing position, in which said nozzle needle closes the nozzle bore, and alternately into an open position, in which said nozzle needle frees the nozzle bore, and means for imparting, during the open position of the nozzle needle, an alternating stroke movement to at least one of said nozzle part and said nozzle needle which is situated in a region of formation of an injection jet, said means for imparting being excitable by a further electrical input variable and being designed structurally in such a way that a period for the alternating stroke movement is many times smaller than a predetermined minimum opening time of the injection nozzle, said means for imparting imparts the alternating stroke movements with a period which corresponds to an excitation frequency of between 5 kHz and 20 kHz, and said means for imparting alters an opening angle of the injection jet of the injection nozzle under control of the further electrical input variable.
Claim 3
Dependent Claim
44 words
An injection nozzle as claimed in claim 1, wherein, to excite the alternating stroke movement, said means for imparting is said drive and receives an alternating voltage as said further electrical input variable in addition to the electrical input variable for opening the nozzle.
Claim 4
Dependent Claim
21 words
An injection nozzle as claimed in claim 1, wherein the means for imparting the alternating stroke movement forms a resonant system.
Claim 5
Dependent Claim
33 words
An injection nozzle as claimed in claim 1, wherein the means for imparting the alternating stroke movement moves the nozzle needle, and wherein the nozzle part is stationary during the alternating stroke movement.
Claim 6
Dependent Claim
40 words
An injection nozzle as claimed in claim 1, wherein the means for imparting the alternating stroke movement moves the nozzle part in which the nozzle bore is arranged, and wherein said nozzle needle is stationary during the alternating stroke movement.
Claim 7
Dependent Claim
18 words
An injection nozzle as claimed in claim 1, wherein said means for imparting imparts longitudinal alternating stroke movements.
Claim 8
Dependent Claim
68 words
An injection nozzle as claimed in claim 1, wherein said means for imparting is a first means for imparting, and further comprising: second means for imparting alternating stroke movements, said second means for imparting imparts transverse alternating stroke movements, said second means for imparting including extensions on said nozzle part about the nozzle bore, said extensions being subject to bending during ejection of liquid from the nozzle bore.
Claim 9
Dependent Claim
22 words
An injection nozzle as claimed in claim 1, wherein the means for imparting the alternating stroke movement comprises a piezoelectric excitation device.
Claim 10
Dependent Claim
26 words
An injection nozzle as claimed in claim 1, wherein the means for imparting the alternating stroke movement comprises an electrodynamic device with a homogeneous magnetic field.
Claim 11
Dependent Claim
21 words
An injection nozzle as claimed in claim 1, wherein said means for imparting the alternating stroke movement comprises a magnetostrictive device.
Claim 12
Dependent Claim
21 words
An injection nozzle as claimed in claim 1, wherein said means for imparting the alternating stroke movement comprises an electromagnetic device.
References Cited (Backward Citations)
DE2123635A1
Cited
US4211199A
Cited
US4431136A
Cited
EP0036617A2
Cited
JPS6022066A
Cited
GB2150978A
Cited
US4684104A
Cited
US4669660A
Cited
US4725002A
Cited
US4750706A
Cited
US4798188A
Cited
US4972996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |