Patent US4094283A successfully refreshed from Google Patents.
US4094283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Rover Co Ltd
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Filing: 1976-08-20
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Granted: 1978-06-13
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Expires: 1996-08-20
Abstract
Abstract Two or more carburetors for an internal combustion engine are mounted on a member providing inlet ducts for each carburetor to engine. The member also includes: An engine coolant duct to heat the ducts; and, further an exhaust gas duct to provide rapid heat-up of the inlet ducts on cold starting. A recirculating exhaust gas valve can also be used.
Inventors
- 👤 Douglas Leslie Sutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:11
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/10; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02M26/00; F02M26/13; F02M26/17; F02M31/06; F02M31/08; F02M31/087; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
An internal combustion engine incorporating a plurality of carburetters mounted on the engine by way of a common structural member having a primary duct for each carburetter to allow the passage of fuel/air mixture from a carburetter to the engine and a secondary duct for liquid through the member characterised by the provision of a third duct in the member in the vicinity of, and defining a path in heat exchange relationship with, the primary duct; a pipe linking the third duct upstream of the heat exchange path to an exhaust manifold of the engine; and a passage downstream of the heat exchange path linking the third duct to the primary duct at a region in the primary duct which is downstream of the heat exchange path.
Claim 2
Dependent Claim
127 words
An internal combustion engine incorporating a plurality of carburetters mounted on the engine by way of a common structural member having a primary duct for each carburetter to allow the passage of fuel/air mixture from a carburetter to the engine and a secondary duct for liquid through the member characterised by the provision of a third duct in the member in the vicinity of, and defining a path in heat exchange relationship with, the primary duct; a pipe linking the third duct upstream of the heat exchange path to an exhaust manifold of the engine; and a passage downstream of the heat exchange path linking the third duct to the primary duct at a region in the primary duct which is downstream of the heat exchange path.
Claim 3
Dependent Claim
28 words
An internal combustion engine as claimed in claim 1 wherein an exhaust gas recirculating valve is provided in the pipe linking the third duct to the exhaust manifold.
Claim 4
Dependent Claim
60 words
An internal combustion engine as claimed in claim 1 wherein the engine has two banks of cylinders with an even number of cylinders in each bank and two carburetters; one carburetter feeding by way of its primary duct, half the cylinders in each bank; the remaining carburetter feeding by way of its primary duct the remaining cylinders in each bank.
Claim 5
Dependent Claim
21 words
An internal combustion engine as claimed in claim 1 wherein all the primary ducts are linked by a pressure balancing duct.
Claim 6
Dependent Claim
23 words
An internal combustion engine as claimed in claim 1 wherein the carburetters are of the constant depression controllable jet automatic variable choke type.
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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |