US5323966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for injecting a fuel-air mixture
Assignee: Robert Bosch GmbH
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Filing: 1992-08-27
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Granted: 1994-06-28
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Expires: 2012-08-27
Abstract
Abstract An apparatus for injecting a fuel-air mixture, including a cup-shaped gas delivery hood with a bottom part of a jacket part between the valve end of a fuel injection valve and a gas delivery element, the jacket part has at least one gas delivery opening through which gas is injected and which strikes the injected fuel. The size of the opening cross section, which meters the gas, of the at least one gas delivery opening is accordingly fixed from the very outset and need not be adjusted. Moreover, because of a directional flow of the delivery of gas, very good atomization of the fuel is attained. The embodiment of the apparatus is especially well-suited for use in mixture-compressing internal combustion engines with externally supplied ignition.
Inventors
- 👤 Juergen Buchholz
- 👤 Martin Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:44
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/16; F02M61/18; F02M61/1853; F02M51/00; F02M51/06; F02M51/061; F02M51/0625; F02M51/0664; F02M51/0671; F02M51/0675; F02M51/0678; F02M69/00; F02M69/04; F02M69/047; F02M69/06; F02M69/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
157 words
An apparatus for injecting a fuel-gas mixture, having a fuel injection valve that has a longitudinal valve axis and a valve closing element cooperating with a fixed valve seat, and having a gas guide element that has a stepped longitudinal bore extending concentrically with the longitudinal valve axis, one valve end of the fuel injection valve protrudes into the longitudinal bore, a cup-shaped gas delivery hood (57) having a bottom part (59) oriented toward the one valve end (3) of the fuel injection valve (1), and a jacket part (61) is disposed in the direction of the longitudinal valve axis (5) between the one valve end (3) of the fuel injection valve (1) and a retaining shoulder (55) of the gas guide element (9), the jacket part (61) of the gas delivery hood (57) extends in a direction of the retaining shoulder (55) of the gas guide element (9) and has at least one delivery opening (71).
Claim 2
Independent Claim
157 words
An apparatus for injecting a fuel-gas mixture, having a fuel injection valve that has a longitudinal valve axis and a valve closing element cooperating with a fixed valve seat, and having a gas guide element that has a stepped longitudinal bore extending concentrically with the longitudinal valve axis, one valve end of the fuel injection valve protrudes into the longitudinal bore, a cup-shaped gas delivery hood (57) having a bottom part (59) oriented toward the one valve end (3) of the fuel injection valve (1), and a jacket part (61) is disposed in the direction of the longitudinal valve axis (5) between the one valve end (3) of the fuel injection valve (1) and a retaining shoulder (55) of the gas guide element (9), the jacket part (61) of the gas delivery hood (57) extends in a direction of the retaining shoulder (55) of the gas guide element (9) and has at least one delivery opening (71).
Claim 3
Dependent Claim
20 words
An apparatus as defined by claim 1, in which said jacket part (61) includes more than one delivery opening (71).
Claim 4
Dependent Claim
45 words
An apparatus as defined by claim 2, in which the bottom part (59) of the gas delivery hood (57) rests on the valve end (3) of the fuel injection valve (1), and includes at least one injection port (49) embodied in the bottom part (59).
Claim 5
Dependent Claim
20 words
An apparatus as defined by claim 3, in which said bottom part (59) includes more than one injection port (49).
Claim 6
Dependent Claim
35 words
An apparatus as defined by claim 2, in which the jacket part (61) of the gas delivery hood (57) widens frustoconically in the direction of the retaining shoulder (55) of the gas guide element (9).
Claim 7
Dependent Claim
58 words
An apparatus as defined by claim 2, in which the bottom part (59) of the gas delivery hood (57) rests on a perforated plate (47) disposed on the one valve end (3) of the fuel injection valve (1) and having at least one injection port (49), and includes a through opening (63) embodied in the bottom part (59).
Claim 8
Dependent Claim
35 words
An apparatus as defined by claim 1, in which the jacket part (61) of the gas delivery hood (57) widens frustoconically in the direction of the retaining shoulder (55) of the gas guide element (9).
Claim 9
Dependent Claim
45 words
An apparatus as defined by claim 7, in which the bottom part (59) of the gas delivery hood (57) rests on the valve end (3) of the fuel injection valve (1), and includes at least one injection port (49) embodied in the bottom part (59).
Claim 10
Dependent Claim
20 words
An apparatus as defined by claim 8, in which said bottom part (59) includes more than one injection port (49).
Claim 11
Dependent Claim
58 words
An apparatus as defined by claim 7, in which the bottom part (59) of the gas delivery hood (57) rests on a perforated plate (47) disposed on the one valve end (3) of the fuel injection valve (1) and having at least one injection port (49), and includes a through opening (63) embodied in the bottom part (59).
Claim 12
Dependent Claim
58 words
An apparatus as defined by claim 1, in which the bottom part (59) of the gas delivery hood (57) rests on a perforated plate (47) disposed on the one valve end (3) of the fuel injection valve (1) and having at least one injection port (49), and includes a through opening (63) embodied in the bottom part (59).
Claim 13
Dependent Claim
45 words
An apparatus as defined by claim 1, in which the bottom part (59) of the gas delivery hood (57) rests on the valve end (3) of the fuel injection valve (1), and includes at least one injection port (49) embodied in the bottom part (59).
Claim 14
Dependent Claim
20 words
An apparatus as defined by claim 12, in which said bottom part (59) includes more than one injection port (49).
Claim 15
Dependent Claim
26 words
An apparatus as defined by claim 1, in which the at least one gas delivery opening (71) is inclined relative to the longitudinal valve axis (5).
Claim 16
Dependent Claim
27 words
An apparatus as defined by claim 1, in which the at least one gas delivery opening (71) of the jacket part (61) is formed as a slit.
Claim 17
Dependent Claim
21 words
An apparatus as defined by claim 1, in which the gas delivery hood (57) is formed by deep-drawing a metal sheet.
References Cited (Backward Citations)
US3680794A
Cited
US4264040A
Cited
DE3240554A1
Cited
US4545354A
Cited
US4519370A
Cited
US4676216A
Cited
US4957241A
Cited
US5197672A
Cited
US5193743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-27 | 1997-12-27 | 1998-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-27 | 2001-12-27 | 2002-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-27 | 2005-12-27 | 2006-06-28 | $7700.00 | Window Closed / Lapsed |