Patent US3946710A successfully refreshed from Google Patents.
US3946710A
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US
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Supplemental air valves and supplemental air systems for internal combustion engines
Assignee: ALBANO ENTERPRISES Inc
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Filing: 1972-03-20
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Granted: 1976-03-30
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Expires: 1992-03-20
Abstract
Abstract Engine performance is improved and nitrogen compound emission is reduced by introducing supplemental air to the intake manifold of an internal combustion engine which is fitted with a PCV valve. The supplemental air inlet device is connected so that it introduces air into the line between the PCV valve and the intake manifold. That line connects to the manifold immediately downstream from the carburetor at a special adaptor. The supplemental air inlet valve is specially constructed to utilize frictional forces arising out of air flow past the valve head, Venturi effect as the head nears closure, and finally pressure sealing at complete closure of the valve, in an efficient but low-cost design. The supplemental air valve is operated at a temperature, and supplemental air is introduced in a way, that results in condensation on its inner walls of oil vapors drawn through the PCV valve so that the condensed oil entraps particles of foreign matter that find their way through the supplemental air valve.
Inventors
- 👤 Joseph L. Albano
- 👤 Hugh H. Harren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:04
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/06; F02M23/00; F02M23/04; F02M23/08; F02M23/09; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
218 words
In combination: an air inlet valve body formed with an internal cavity extending from an inlet to an outlet and defining a flowpath for air; a valve seat disposed in the cavity across said flowpath between said inlet and outlet affording communication between said inlet and outlet; a valve head disposed in said cavity upstream from said seat and movable into and out of engagement with said seat whereby to preclude and to permit air flow from inlet to outlet; resilient means comprising a spring for urging said head from said seat in a direction to permit air flow past the head and through said seat; actuating means responsive to suction pressure at the outlet end of said cavity for urging said head toward said seat against the bias of said spring in a degree variable with suction pressure; means for connecting said cavity at its outlet to the fuel and air inlet system of an internal combustion engine and to the crankcase of said engine at a point immediately downstream from the point at which fuel is mixed with air; and a PCV valve interconnected in series with said means for connecting said cavity to the engine crankcase; the maximum flow rate through the PCV valve being substantially twice the maximum flow rate through the air valve.
Claim 2
Dependent Claim
218 words
In combination: an air inlet valve body formed with an internal cavity extending from an inlet to an outlet and defining a flowpath for air; a valve seat disposed in the cavity across said flowpath between said inlet and outlet affording communication between said inlet and outlet; a valve head disposed in said cavity upstream from said seat and movable into and out of engagement with said seat whereby to preclude and to permit air flow from inlet to outlet; resilient means comprising a spring for urging said head from said seat in a direction to permit air flow past the head and through said seat; actuating means responsive to suction pressure at the outlet end of said cavity for urging said head toward said seat against the bias of said spring in a degree variable with suction pressure; means for connecting said cavity at its outlet to the fuel and air inlet system of an internal combustion engine and to the crankcase of said engine at a point immediately downstream from the point at which fuel is mixed with air; and a PCV valve interconnected in series with said means for connecting said cavity to the engine crankcase; the maximum flow rate through the PCV valve being substantially twice the maximum flow rate through the air valve.
Claim 3
Dependent Claim
73 words
The invention defined in claim 1 in which said means for connecting the cavity at its outlet to PCV valve includes a non-metallic conduit, said air valve being formed of aluminum and with means in the form of external conformations and promoting heat dissipation, whereby said air valve operates at lower temperature than said PCV valve whereby to promote condensation of oil from vapors drawn to said air valve through said PCV valve.
Claim 4
Dependent Claim
160 words
In a supplemental air inlet system of the kind in which a valve body formed with a cylindrical cavity has an appertured partition extending transversely across the cavity to serve as a seat for a valve head disposed upstream from the seat on an axial pin and movable along the pin toward the seat against a bias spring surrounding the pin between the head and seat in response to suction downstream from said seat, the improvement in which: said valve body is formed with an internal shoulder extending into said cavity and said seat rests on said shoulder; and in which said head is cylindrical and of a diameter only slightly less than the inner diameter of the cavity in which disposed and which has thickness exceeding substantially the thickness of said partition; said head being recessed at its lower face toward said seat in a degree sufficient to receive the whole of said spring on closure of said valve.
Claim 5
Dependent Claim
160 words
In a supplemental air inlet system of the kind in which a valve body formed with a cylindrical cavity has an appertured partition extending transversely across the cavity to serve as a seat for a valve head disposed upstream from the seat on an axial pin and movable along the pin toward the seat against a bias spring surrounding the pin between the head and seat in response to suction downstream from said seat, the improvement in which: said valve body is formed with an internal shoulder extending into said cavity and said seat rests on said shoulder; and in which said head is cylindrical and of a diameter only slightly less than the inner diameter of the cavity in which disposed and which has thickness exceeding substantially the thickness of said partition; said head being recessed at its lower face toward said seat in a degree sufficient to receive the whole of said spring on closure of said valve.
Claim 6
Dependent Claim
28 words
The invention defined in claim 3 in which said body is fitted with a cover plate which bears against said pin and forces said seat against said shoulder.
Claim 7
Dependent Claim
83 words
The invention defined in claim 4 in which said body is formed, at a point downstream from said apperture, with two openings; said invention further comprising a PCV valve having an output opening; a non-metallic conduit connecting the outlet opening of the PCV valve with one of the openings of said valve body; and means in the form of a conduit connected to the other opening of said valve body for connecting said valves in parallel to an input manifold of an engine.
References Cited (Backward Citations)
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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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |