US3628515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring device for a fuel injection system
Assignee: Robert Bosch GmbH
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Filing: 1970-09-25
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Granted: 1971-12-21
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Expires: 1990-09-25
Abstract
Abstract A measuring and distributing fuel valve for an external-ignition engine has a flow-responsive disc mounted in the suction duct at one end of a pivotable arm carrying a counterweight at its other end. A roller on the arm controls the rotatable slider of a measuring and distributing valve and engages frictionally with an eccentric point on the end face of the slider.
Inventors
- 👤 Heinrich Knapp
- 👤 Konrad Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:16
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/16; F02M69/26; F02M69/18; F02M69/22; F02M69/46; F02M69/48; G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/28; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A measuring device for the fuel injection system of an external-ignition engine operating with compression of the fuel mixture and with continuous injection into the suction duct, comprising: a sensor member and an arbitrarily adjustable throttle member in longitudinally spaced arrangement in said suction duct, said sensor member comprising a valve disc perpendicular to the direction of flow and subject to a return force and responsive to the airflow to deflect proportionally to the rate of airflow and penetrate into a conically outwardly flared portion of said suction duct, and a fuel valve responsive to deflection of said sensor member to control the supply of fuel proportionally to the rate of air supply, characterized in that said valve disc comprises a plate attached to one end of a pivotable arm having a fixed pivot point of low friction.
Claim 2
Dependent Claim
138 words
A measuring device for the fuel injection system of an external-ignition engine operating with compression of the fuel mixture and with continuous injection into the suction duct, comprising: a sensor member and an arbitrarily adjustable throttle member in longitudinally spaced arrangement in said suction duct, said sensor member comprising a valve disc perpendicular to the direction of flow and subject to a return force and responsive to the airflow to deflect proportionally to the rate of airflow and penetrate into a conically outwardly flared portion of said suction duct, and a fuel valve responsive to deflection of said sensor member to control the supply of fuel proportionally to the rate of air supply, characterized in that said valve disc comprises a plate attached to one end of a pivotable arm having a fixed pivot point of low friction.
Claim 3
Dependent Claim
57 words
A measuring device according to claim 1, comprising a slider in said fuel valve responsive to actuation by said pivotable arm, an annular notch on said slider connected to a fuel supply for said engine for proportioning the rate of fuel supply, and at least one radial control notch connecting said annular notch with an injection nozzle.
Claim 4
Dependent Claim
32 words
A measuring device according to claim 1, in which said arm is pivoted at an intermediate point thereof and supports at one end said disc and at the other end a counterweight.
Claim 5
Dependent Claim
21 words
A measuring device according to claim 1, in which the area of said disc is larger than that of said throttle.
Claim 6
Dependent Claim
17 words
A measuring device according to claim 2, in which said arm carries a roller engaging said slider.
Claim 7
Dependent Claim
33 words
A measuring device according to claim 5, in which said slider is rotatable and said roller has frictional and eccentric engagement therewith so as to cause rotation thereof upon movement of said arm.
Claim 8
Dependent Claim
45 words
A measuring device according to claim 2, in which said arm at the point of engagement thereof with said slider is provided with a cam for adjustment of the interrelationship between sensor member deflection and slider displacement in dependence upon angular displacement of said arm.
Claim 9
Dependent Claim
46 words
A measuring device according to claim 4, in which said sensor disc is provided in a section of said suction duct having a filter provided therein, whereby the air after passage thereof through said filter impinges said sensor disc at the entrance to said suction duct.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |