US3672343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal regulator system for fuel-injection combustion engines
Assignee: Robert Bosch GmbH
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Filing: 1970-10-14
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Granted: 1972-06-27
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Expires: 1990-10-14
Abstract
Abstract A centrifugal regulator for an internal combustion engine having a fuel injector controllable by actuation of a control rod. Movement of the governor sleeve upon a variation in rpm is transferred to a spring-biased rocker arm, which is pivoted on an intermediate lever between a fixed pivot thereof and a link connecting it with the control rod. Various types of relationship between fuel injection rate and rpm are obtained by means of differently placed adjustable or resilient stops provided on a spring-urged support arm and on which the rocker arm may swing when transferring sleeve movement to the intermediate lever and the control rod.
Inventors
- 👤 Josef Biechl
- 👤 Karl Konrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:27
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/02; F02D1/04; F02D1/045; F02D1/08; F02D1/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
223 words
A centrifugal rpm regulator system for internal combustion engines operating on injected fuel, said system being of the known type that has (a) a governor member movable as a function of the engine rpm, (b) a fuel injection pump having a movable control member for controlling the rate of fuel supply, (c) an intermediate lever movable about a fixed pivot for transferring the displacements of said governor member to said control member, (d) at least one counteracting spring and (e) a force transmitting member subjecting said governor member to the force of said counteracting spring, the improvement comprising, A. a rocker arm in engagement with said governor member and pivotally attached at one of its ends to said intermediate lever at a location remote from said fixed pivot, said rocker arm constituting the sole means to transfer the motions of said governor member to said intermediate lever, B. at least two stop surfaces provided on said rocker arm remote from said pivotally attached end thereof, and C. at least two stops provided on said force transmitting member for cooperating, upon movement of said governor member, with corresponding stop surfaces provided on said rocker arm, at least one of said stops yielding resiliently and another of said stops being stationary to serve as a fixed point for said rocker arm during pivotal motions thereof.
Claim 2
Dependent Claim
223 words
A centrifugal rpm regulator system for internal combustion engines operating on injected fuel, said system being of the known type that has (a) a governor member movable as a function of the engine rpm, (b) a fuel injection pump having a movable control member for controlling the rate of fuel supply, (c) an intermediate lever movable about a fixed pivot for transferring the displacements of said governor member to said control member, (d) at least one counteracting spring and (e) a force transmitting member subjecting said governor member to the force of said counteracting spring, the improvement comprising, A. a rocker arm in engagement with said governor member and pivotally attached at one of its ends to said intermediate lever at a location remote from said fixed pivot, said rocker arm constituting the sole means to transfer the motions of said governor member to said intermediate lever, B. at least two stop surfaces provided on said rocker arm remote from said pivotally attached end thereof, and C. at least two stops provided on said force transmitting member for cooperating, upon movement of said governor member, with corresponding stop surfaces provided on said rocker arm, at least one of said stops yielding resiliently and another of said stops being stationary to serve as a fixed point for said rocker arm during pivotal motions thereof.
Claim 3
Dependent Claim
30 words
An improvement to claim 1, in which said rocker arm is pivoted to said intermediate lever between the point of coupling thereof to said control member and said fixed pivot.
Claim 4
Dependent Claim
43 words
An improvement according to claim 1, in which said governor member is axially movable, said resilient stop is positioned in the prolongation of the axis of said governor member and a second one of said stops is adjustable to an arbitrary fixed level.
Claim 5
Dependent Claim
74 words
An improvement according to claim 1, in which said governor member is axially movable, said stops include a first resilient stop positioned in the prolongation of the axis of said governor member, a second resilient stop between said axis and said pivoted end of said rocker member, and a third stop adjustable at an arbitrary fixed level and positioned at the opposite side of said second resilient stop relative to said first resilient stop.
Claim 6
Dependent Claim
40 words
An improvement according to claim 1, in which said governor member is axially movable, said stop surfaces are two in number and are positioned at opposite sides of the axis of said governor member for cooperation with correspondingly positioned stops.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |