US3744464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for controlling the pressure in the inlet manifold of an internal combustion engine
Assignee: ZF International UK Ltd
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Filing: 1971-01-21
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Granted: 1973-07-10
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Expires: 1991-01-21
Abstract
Abstract An arrangement for controlling the pressure in the inlet manifold of an internal combustion engine has a speed-responsive valve in a passage communicating with the manifold, and a control device responsive to the pressure downstream of the speedresponsive valve and to the manifold pressure, the arrangements being such that when the engine speed is above a predetermined level and the manifold pressure is below a predetermined level the control device admits additional air to the manifold.
Inventors
- 👤 J Soltau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:17
CPC Classifications
F; F02; F02M; F02M23/00; F02M23/04; F02M23/08; F02M23/085; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S261/00; Y10S261/19
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
197 words
An arrangement for controlling the pressure in the inlet manifold of an internal combustion engine, comprising an air passage communicating with said manifold, a valve in said passage, said valve including a casing having an inlet and an outlet, a member rotatable within the casing and sealingly engaged therewith between the inlet and the outlet, a passage in the said member to permit communication between the inlet and outlet, a closure means for the passage pivotally mounted on said member, biasing means urging the closure means in a direction to shut the valve, the closure means being responsive to centrifugal force to open the valve, and means for rotating the said member at a speed dependent on the speed of the engine, and a pressure responsive control means including an actuating means responsive to the pressure at the valve outlet and a further valve operable by the actuating means to admit air to the said manifold, the arrangement being such that, when the speed of said member in the first-mentioned valve is above a predetermined level and the manifold pressure is below a predetermined level, the further valve is operated to increase air flow to the manifold.
Claim 2
Dependent Claim
197 words
An arrangement for controlling the pressure in the inlet manifold of an internal combustion engine, comprising an air passage communicating with said manifold, a valve in said passage, said valve including a casing having an inlet and an outlet, a member rotatable within the casing and sealingly engaged therewith between the inlet and the outlet, a passage in the said member to permit communication between the inlet and outlet, a closure means for the passage pivotally mounted on said member, biasing means urging the closure means in a direction to shut the valve, the closure means being responsive to centrifugal force to open the valve, and means for rotating the said member at a speed dependent on the speed of the engine, and a pressure responsive control means including an actuating means responsive to the pressure at the valve outlet and a further valve operable by the actuating means to admit air to the said manifold, the arrangement being such that, when the speed of said member in the first-mentioned valve is above a predetermined level and the manifold pressure is below a predetermined level, the further valve is operated to increase air flow to the manifold.
Claim 3
Dependent Claim
21 words
An arrangement as claimed in claim 1 in which the actuating means is also responsive to the pressure in the manifold.
Claim 4
Dependent Claim
34 words
An arrangement as claimed in claim 1 in which the said further valve is arranged to admit air to the inlet manifold directly from a zone upstream of a throttle valve for the engine.
Claim 5
Dependent Claim
36 words
An arrangement as claimed in claim 1 which includes valve means in the said passage in series with the first-mentioned valve, the said valve means being responsive to the position of a throttle for the engine.
Claim 6
Dependent Claim
61 words
An arrangement as claimed in claim 1 in which the control means comprises a further valve in said passage in series with the first-mentioned valve and actuating means for the further valve responsive to the pressure in the manifold, the end of the passage remote from the manifold communicating with a zone which is upstream of a throttle for the engine.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |