US5383606A
Expired / Lapsed
US
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Fuel injection valve and method for adjusting a fuel injection valve
Assignee: Robert Bosch GmbH
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Filing: 1992-06-30
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Granted: 1995-01-24
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Expires: 2012-06-30
Abstract
Abstract A fuel injection valve and method for adjusting the static fuel quantity output ejected during the steady opening state of the fuel injection valve. In the method according to the invention, the static fuel quantity is adjusted directly in the otherwise completely installed fuel injection valve, so that a variation on the static fuel quantity of the various fuel injection valves is minimized. To this end, a throttle device, serving to meter the fuel and whose free flow cross section is variable, is provided upstream of the valve seat. The method according to the invention is suitable for fuel injection valves of various kinds.
Inventors
- 👤 Alwin Stegmaier
- 👤 Kenneth J. Zwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:26
CPC Classifications
F; F02; F02M; F02M65/00; F02M65/001; F02M51/00; F02M51/06; F02M51/061; F02M51/0625; F02M51/0664; F02M51/0671; F02M51/0682; F02M61/00; F02M61/16; F02M61/168; Y; Y10; Y10S; Y10S239/00; Y10S239/90
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
130 words
A method for adjusting a static fuel quantity output ejected during a steady opening state of a fuel injection valve that has a valve closing part located in a flow conduit and cooperating with a valve seat and a throttle device disposed upstream of the valve seat and serving to meter the fuel, comprising the steps of: measuring an actual quantity of the ejected output fuel in a complete fuel injection valve while the fuel injection valve is completely opened to permit a fuel flow through the opened valve, comparing the measured ejected output with a predetermined set-point measured quantity, and continuously varying the free flow cross section (89) of the throttle device (87) until the ejected output of an actual quantity matches the predetermined set-point quantity of the fuel.
Claim 2
Independent Claim
130 words
A method for adjusting a static fuel quantity output ejected during a steady opening state of a fuel injection valve that has a valve closing part located in a flow conduit and cooperating with a valve seat and a throttle device disposed upstream of the valve seat and serving to meter the fuel, comprising the steps of: measuring an actual quantity of the ejected output fuel in a complete fuel injection valve while the fuel injection valve is completely opened to permit a fuel flow through the opened valve, comparing the measured ejected output with a predetermined set-point measured quantity, and continuously varying the free flow cross section (89) of the throttle device (87) until the ejected output of an actual quantity matches the predetermined set-point quantity of the fuel.
Claim 3
Dependent Claim
73 words
A method as defined by claim 1, wherein the fuel injection valve for performing the method steps further includes a tubular inner pole, having a flow bore extending concentrically with a longitudinal valve axis, and a throttle body, in which the free cross section (89) of the throttle device (87) is varied by varying a depth of insertion of the throttle body (81) into the flow bore (37) of the inner pole (3).
Claim 4
Dependent Claim
69 words
A fuel injection valve having a valve closing element located in a flow conduit and cooperating with a valve seat, a throttle device disposed upstream of the valve seat and serving to meter the fuel flow, and a free cross section (89) of the throttle device (87) is continuously variable in an otherwise complete fuel injection valve whereby the flow of fuel is adjusted to a predetermined flow quantity.
Claim 5
Dependent Claim
69 words
A fuel injection valve having a valve closing element located in a flow conduit and cooperating with a valve seat, a throttle device disposed upstream of the valve seat and serving to meter the fuel flow, and a free cross section (89) of the throttle device (87) is continuously variable in an otherwise complete fuel injection valve whereby the flow of fuel is adjusted to a predetermined flow quantity.
Claim 6
Dependent Claim
65 words
A fuel injection valve as defined by claim 3, having a tubular inner pole, having a flow bore extending concentrically with a longitudinal valve axis, and having a throttle body, in which the free cross section (89) of the throttle device (87) is variable by varying a depth of insertion of the throttle body (81) in the flow bore (37) of the inner pole (3).
Claim 7
Dependent Claim
35 words
A fuel injection valve as defined by claim 4, having a fuel filter (71) disposed in the flow bore of the inner pole, in which the throttle body (81) is joined to the fuel filter.
Claim 8
Dependent Claim
21 words
A fuel injection valve as defined by claim 5, in which the throttle body (81) tapers in the fuel flow direction.
Claim 9
Dependent Claim
21 words
A fuel injection valve as defined by claim 4, in which the throttle body (81) tapers in the fuel flow direction.
Claim 10
Dependent Claim
163 words
A fuel injection valve having a valve closing element located in a flow conduit which cooperates with a valve seat, a tubular inner pole (3), a flow bore (37) extending through said inner pole concentrically with a longitudinal valve axis, a tubular adjustable bush (41) disposed within the flow bore of the inner pole and having a longitudinal opening (85), a fuel filter (71) disposed in said flow bore (37) of the inner pole upstream of said tubular adjusting bush, said fuel filter having a throttle body (81) joined to a lower end thereof, said throttle body (81) protrudes partway into said longitudinal opening of said tubular adjustable bush to form a throttle device (87) having a free cross section (89), said free cross section is variable by varying a depth of insertion of said filter into said tubular inner pole simultaneously with varying a depth of insertion of the throttle body (81) into the longitudinal opening (85) of the tubular adjustable bush.
Claim 11
Dependent Claim
163 words
A fuel injection valve having a valve closing element located in a flow conduit which cooperates with a valve seat, a tubular inner pole (3), a flow bore (37) extending through said inner pole concentrically with a longitudinal valve axis, a tubular adjustable bush (41) disposed within the flow bore of the inner pole and having a longitudinal opening (85), a fuel filter (71) disposed in said flow bore (37) of the inner pole upstream of said tubular adjusting bush, said fuel filter having a throttle body (81) joined to a lower end thereof, said throttle body (81) protrudes partway into said longitudinal opening of said tubular adjustable bush to form a throttle device (87) having a free cross section (89), said free cross section is variable by varying a depth of insertion of said filter into said tubular inner pole simultaneously with varying a depth of insertion of the throttle body (81) into the longitudinal opening (85) of the tubular adjustable bush.
Claim 12
Dependent Claim
21 words
A fuel injection valve as defined by claim 8, in which the throttle body (81) tapers in the fuel flow direction.
Claim 13
Dependent Claim
174 words
A fuel injection valve having a valve closing element located in a flow conduit and cooperating with a valve seat, a throttle device disposed upstream of the valve seat and serving to meter the fuel flow, and a free cross section (89) of the throttle device (87) is continuously variable in an otherwise complete fuel injection valve having a tubular inner pole, a flow bore extending concentrically with a longitudinal valve axis, a fuel filter (71) disposed in the flow bore of the inner pole, a throttle body joined to the fuel filter, in which the free cross section (89) of the throttle device (87) is variable by varying a depth of insertion of the throttle device (81) in the flow bore (37) of the inner pole (3), a tubular adjusting bush disposed in the flow bore of the inner pole, the bush having a longitudinal opening and being disposed downstream of the fuel filter, in which the throttle body (81) protrudes part way into the longitudinal opening (85) of the adjusting bush (41).
Claim 14
Dependent Claim
174 words
A fuel injection valve having a valve closing element located in a flow conduit and cooperating with a valve seat, a throttle device disposed upstream of the valve seat and serving to meter the fuel flow, and a free cross section (89) of the throttle device (87) is continuously variable in an otherwise complete fuel injection valve having a tubular inner pole, a flow bore extending concentrically with a longitudinal valve axis, a fuel filter (71) disposed in the flow bore of the inner pole, a throttle body joined to the fuel filter, in which the free cross section (89) of the throttle device (87) is variable by varying a depth of insertion of the throttle device (81) in the flow bore (37) of the inner pole (3), a tubular adjusting bush disposed in the flow bore of the inner pole, the bush having a longitudinal opening and being disposed downstream of the fuel filter, in which the throttle body (81) protrudes part way into the longitudinal opening (85) of the adjusting bush (41).
Claim 15
Dependent Claim
21 words
A fuel injection valve as defined by claim 10, in which the throttle body (81) tapers in the fuel flow direction.
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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) | 1998-01-23 | 1998-07-25 | 1999-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-23 | 2002-07-25 | 2003-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-23 | 2006-07-25 | 2007-01-24 | $7700.00 | Window Closed / Lapsed |