US4099504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle structure for an internal combustion engine
Assignee: Carter Automotive Co Inc
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Filing: 1976-09-29
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Granted: 1978-07-11
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Expires: 1996-09-29
Abstract
Abstract An internal combustion engine is provided with an improved throttle structure. The engine includes a carburetor having an air passageway in it, and an intake manifold interposed between the engine and the carburetor, the carburetor being attached to the intake manifold by any convenient method. The intake manifold includes at least one wall defining a plurality of fluid passageways operatively connected to the carburetor and to the combustion chambers of the engine. In the preferred form of the invention, a cylindrical tube has an axial length chosen so that a first end of the tube extends into the carburetor while a second end extends into the intake manifold. The second end of the tube and the intake manifold define the throttle valve for the engine. The tube is mounted for movement between at least a first closed position where the second tube end is adjacent the wall of the manifold and a second open position where the second tube end is remote from the wall of the intake manifold. Preferably, the intake manifold wall is at least partially defined by a plate adapted to facilitate heat transfer between the intake manifold and an exhaust manifold of the engine, the exhaust manifold being operatively connected to the combustion chambers of the engine.
Inventors
- 👤 James T. Bickhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:33
CPC Classifications
F; F02; F02D; F02D9/00; F02D9/08; F02D9/12; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/08; F02M31/087; F02M9/00; F02M9/12; F02M9/127; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
139 words
A fluid supply system for an internal combustion engine, comprising: an intake manifold, said intake manifold including an enclosure, said enclosure defining a plurality of fuel ports and a distribution passage, said intake manifold having at least one opening in it for communicating with a carburetor, said inlet manifold including a bottom wall; a carburetor, said carburetor having a main air passage communicating with the opening in said intake manifold and said distribution passage, means for injecting fuel into said main air passage, and a throttle structure operable from a fully closed to an open position for controlling fluid flow through said intake manifold in response to demands made on said engine, said throttle structure being mounted to said carburetor so as to extend into said intake manifold, said throttle structure having an outlet side in said intake manifold.
Claim 2
Dependent Claim
139 words
A fluid supply system for an internal combustion engine, comprising: an intake manifold, said intake manifold including an enclosure, said enclosure defining a plurality of fuel ports and a distribution passage, said intake manifold having at least one opening in it for communicating with a carburetor, said inlet manifold including a bottom wall; a carburetor, said carburetor having a main air passage communicating with the opening in said intake manifold and said distribution passage, means for injecting fuel into said main air passage, and a throttle structure operable from a fully closed to an open position for controlling fluid flow through said intake manifold in response to demands made on said engine, said throttle structure being mounted to said carburetor so as to extend into said intake manifold, said throttle structure having an outlet side in said intake manifold.
Claim 3
Dependent Claim
63 words
The fluid supply system of claim 1 wherein the bottom wall of said intake manifold has an opening in it, said opening being axially aligned with the main air passageway of said carburetor, and a floor plate mounted along said intake manifold so as to close said opening, said throttle structure coacting with said plate to vary fluid flow in said distribution passage.
Claim 4
Dependent Claim
21 words
The fluid supply system of claim 2 wherein said floor plate extends upwardly from the bottom wall of said intake manifold.
Claim 5
Dependent Claim
18 words
The fluid supply system of claim 3 wherein said floor plate has a conical shape in cross section.
Claim 6
Dependent Claim
77 words
The fluid supply system of claim 4 wherein said throttle structure includes a cylindrical section having a first end located in said carburetor, and a second end positioned in said intake manifold, said cylindrical section being movable between at least a first position wherein said second end approximately abuts said plate, and a second position wherein said second end is removed from said plate, and means for moving said cylinder between said first and said second position.
Claim 7
Dependent Claim
100 words
The fluid supply system of claim 1 wherein said carburetor includes drop-in means adapted to be positioned within said intake manifold, said drop-in means including a plate, and means for attaching said plate to said carburetor, said throttle means including a cylinder, said cylinder having a first end located in said carburetor, and a second end located in said intake manifold, said second end being movable between at least a first position wherein said second end approximately abuts the plate of said drop-in means, and a second position wherein said cylinder is remote from the plate of said drop-in means.
Claim 8
Dependent Claim
155 words
In a fuel supply system for an internal combustion engine having an intake manifold for distributing fuel to the engine, the intake manifold having an enclosure including at least one side wall defining a plurality of passages for conducting fuel to said engine, and a carburetor structure for supplying a fuel/air mixture to said manifold, said carburetor structure including fuel supply means, and an air passage in said carburetor structure operatively connected to said fuel supply means and said intake manifold, the improvement which comprises throttle structure means operable from a fully closed to an open position for regulating fluid flow through said intake manifold, said throttle structure means having an inlet end and an outlet end, the outlet end of said throttle structure means being located in said inlet manifold, and means in said inlet manifold for cooperating with the outlet end of said throttle means to regulate fluid flow through said intake manifold.
Claim 9
Dependent Claim
155 words
In a fuel supply system for an internal combustion engine having an intake manifold for distributing fuel to the engine, the intake manifold having an enclosure including at least one side wall defining a plurality of passages for conducting fuel to said engine, and a carburetor structure for supplying a fuel/air mixture to said manifold, said carburetor structure including fuel supply means, and an air passage in said carburetor structure operatively connected to said fuel supply means and said intake manifold, the improvement which comprises throttle structure means operable from a fully closed to an open position for regulating fluid flow through said intake manifold, said throttle structure means having an inlet end and an outlet end, the outlet end of said throttle structure means being located in said inlet manifold, and means in said inlet manifold for cooperating with the outlet end of said throttle means to regulate fluid flow through said intake manifold.
Claim 10
Dependent Claim
101 words
The improvement of claim 7 wherein said cooperating means in said inlet manifold includes a drop-in means adapted to project within said inlet manifold, said drop-in means including a plate, and means for attaching said plate to said carburetor structure, said throttle structure means having a first end mounted in said carburetor structure, and a second end positioned in said intake manifold, said second end being movable between at least a first position wherein said second end approximately abuts the plate of said drop-in means, and a second position wherein said cylinder is remote from the plate of said drop-in means.
Claim 11
Dependent Claim
55 words
The improvement of claim 7 wherein said intake manifold includes a bottom wall, said bottom wall having a smooth area formed in it, said smooth area being axially aligned with the air passage in said carburetor structure, said throttle structure coacting with said smooth area to vary fluid flow in said plurality of fuel passages.
Claim 12
Dependent Claim
59 words
The improvement of claim 7 wherein said intake manifold includes a bottom wall, said bottom wall having an opening in it, and a floor plate mounted along said intake manifold so as to close the opening in said bottom wall, said throttle structure coacting with said floor plate to vary fluid flow in passage plurality of the intake manifold.
Claim 13
Dependent Claim
30 words
The improvement of claim 10 wherein said floor plate extends upwardly from the plane of the bottom wall of said intake manifold, said floor plate being conic in cross section.
Claim 14
Dependent Claim
71 words
The improvement of claim 11 wherein said engine includes an exhaust manifold adjacent said intake manifold, said intake manifold having an opening in it communicating with said exhaust manifold, said floor plate being mounted in said opening and closing communication between said intake and said exhaust manifolds, said plate being constructed from a heat conductive material, said throttle structure coacting with said plate to regulate fluid flow through said intake manifold.
Claim 15
Dependent Claim
14 words
The improvement of claim 12 wherein said throttle structure means is a cylindrical tube.
Claim 16
Dependent Claim
117 words
A fuel supply system for an internal combustion engine, comprising: an intake manifold for distributing fluid to the engine, said manifold having an enclosure, said enclosure including at least one wall defining a plurality of fluid passages in said manifold; a carburetor structure for supplying a fuel/air mixture to said intake manifold, said carburetor structure having an air passage in it operatively connected to said intake manifold, fuel supply means operatively connected to said air passage, and means for mixing fuel and air in said passage upstream of said intake manifold; and throttle valve means operable from a fully closed to an open position for controlling fluid flow through said intake manifold mounted in said intake manifold.
Claim 17
Dependent Claim
117 words
A fuel supply system for an internal combustion engine, comprising: an intake manifold for distributing fluid to the engine, said manifold having an enclosure, said enclosure including at least one wall defining a plurality of fluid passages in said manifold; a carburetor structure for supplying a fuel/air mixture to said intake manifold, said carburetor structure having an air passage in it operatively connected to said intake manifold, fuel supply means operatively connected to said air passage, and means for mixing fuel and air in said passage upstream of said intake manifold; and throttle valve means operable from a fully closed to an open position for controlling fluid flow through said intake manifold mounted in said intake manifold.
Claim 18
Dependent Claim
101 words
The fuel supply system of claim 14 wherein said throttle valve means includes a drop-in structure adapted to project within said inlet manifold, said drop-in means including a plate and means for attaching said plate to said carburetor structure, and a tubular device having a first end mounted in said carburetor structure, said tubular device having a second end positioned in said intake manifold, said second end being movable between at least a first position wherein said second end approximately abuts the plate of said drop-in means, and a second position wherein said tubular device is remote from the drop-in structure.
Claim 19
Dependent Claim
34 words
The fuel supply system of claim 14 wherein said intake manifold includes a bottom wall, said throttle valve means coacting with said bottom wall to vary fluid flow in said plurality of fuel passages.
Claim 20
Dependent Claim
24 words
The fuel supply system of claim 16 wherein said bottom wall is at least partially defined by a plate attached to the intake manifold.
Claim 21
Dependent Claim
42 words
The fuel supply system of claim 14 wherein said throttle valve means comprises a tubular structure having a first end and a second end, said second end being positioned in said inlet manifold and defining an outlet for said throttle valve means.
Claim 22
Dependent Claim
15 words
The fuel system of claim 18 wherein said tubular structure comprises a right circular cylinder.
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) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |