Patent US3857908A successfully refreshed from Google Patents.
US3857908A
Expired / Lapsed
US
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Apparatus for controlling and modulating engine functions
Assignee: Carter Automotive Co Inc
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Filing: 1973-02-09
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Granted: 1974-12-31
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Expires: 1993-02-09
Abstract
Abstract Changes in barometric pressure and/or temperature can adversely affect a number of engine functions. Apparatus is disclosed for controlling and modulating a number of engine functions, including carburetor idle fuel and main fuel supply, fuel enrichment during acceleration and wide open throttle operation, as well as vacuum applied to such vacuum motors associated with the engine as the carburetor choke, the spark advance and automatic transmission shift. Calibration features are provided for establishing a base condition of operation as well as individual calibration of all the various functions listed together with the ability to make base calibration changes by application of an external signal.
Inventors
- 👤 R Kalert
- 👤 A Vollmer
- 👤 M Brown
- 👤 F Cook
- 👤 J Winkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:19
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/08; F02M3/09; F02M7/00; F02M7/23; F02M7/24; F02M7/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
In an internal combustion engine having a plurality of engine functions operable by the suction created by the natural aspiration of said engine during running condition, the improvement comprising; an attachment connected to said engine communicating on one side with ambient air and on another side with at least one suction controlled passage leading to at least one engine function controlling means. said attachment including a bellows responsive to barometric and/or temperature changes of said atmospheric air to change a dimension of said bellows, said bellows being mounted in a housing, said housing also including a pivotable plate surmounting said bellows, at least one metering means being connected to said plate, said metering means being adapted to meter ambient air to said at least one engine function controlling means and said pivotable plaTe being pivoted at one end thereof, said plate adjustably contacting said bellows at an intermediate position along the length of said plate, said plate also having adjustment biasing means at the end opposite said pivoted end.
Claim 2
Dependent Claim
169 words
In an internal combustion engine having a plurality of engine functions operable by the suction created by the natural aspiration of said engine during running condition, the improvement comprising; an attachment connected to said engine communicating on one side with ambient air and on another side with at least one suction controlled passage leading to at least one engine function controlling means. said attachment including a bellows responsive to barometric and/or temperature changes of said atmospheric air to change a dimension of said bellows, said bellows being mounted in a housing, said housing also including a pivotable plate surmounting said bellows, at least one metering means being connected to said plate, said metering means being adapted to meter ambient air to said at least one engine function controlling means and said pivotable plaTe being pivoted at one end thereof, said plate adjustably contacting said bellows at an intermediate position along the length of said plate, said plate also having adjustment biasing means at the end opposite said pivoted end.
Claim 3
Dependent Claim
31 words
Apparatus according to claim 1 in which said biasing means comprises a spring attached at one end thereof to said housing and at the other end thereof to an adjustment screw.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 2 in which said adjustment screw is threaded through an opening in said plate whereby to adjust the bias of said biasing spring.
Claim 5
Dependent Claim
61 words
Apparatus according to claim 3 in which said adjustment screw includes an enlarged head thereon and said spring comprises a series of coils, said enlarged head constituting means for engaging different coils of said biasing spring whereby through selection of a correct coil engagement, the rate of said spring can be selected in accordance with a predetermined set of ambient conditions.
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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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |