US3785628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the implementation of procedures for the decontamination of internal combustion engine exhaust gases
Assignee: Individual
•
Filing: 1972-08-14
•
Granted: 1974-01-15
•
Expires: 1992-08-14
Abstract
Abstract A device for the implementation of procedures for the decontamination of internal combustion engine exhaust gases by preparation of a flammable and ignitable air-fuel mixture with a variable air ratio figure lambda by means of a throttle flap adjustment regulating the fuel jet hydraulic resistance, and which is adjustable such that fuel atomization is performed, using a throttle flap permitting a tolerated air gap all around the circumference in the carburetor duct for the throttle flap position Alpha 0*, which has rims with bores on both sides, and which is followed by a ramjet in the carburetor duct.
Inventors
- 👤 L Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:52
CPC Classifications
F; F02; F02M; F02M19/00; F02M29/00; F02M29/04; F02M29/06; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
134 words
In a device for the implementation of a procedure for the decontamination of internal combustion engine exhaust gases by preparation of a flammable and ignitable air-fuel mixture with a variable air ratio figure lambda by a throttle flap adjustment regulating the hydraulic resistance in the fuel jets, and which is adjustable such that fuel atomization is performed, by using a throttle flap permitting a tolerated air gap all around the circumference in the carburetor duct for the throttle flap position Alpha 0, which has rims with bores on both sides, and which is followed by a ramjet in the carburetor duct, the improvement comprising bores in the rims formed as oblong holes and ramjet means having a smooth entry surface and a subsequent rough surface arranged between a carburetor and a suction duct (25).
Claim 2
Dependent Claim
134 words
In a device for the implementation of a procedure for the decontamination of internal combustion engine exhaust gases by preparation of a flammable and ignitable air-fuel mixture with a variable air ratio figure lambda by a throttle flap adjustment regulating the hydraulic resistance in the fuel jets, and which is adjustable such that fuel atomization is performed, by using a throttle flap permitting a tolerated air gap all around the circumference in the carburetor duct for the throttle flap position Alpha 0, which has rims with bores on both sides, and which is followed by a ramjet in the carburetor duct, the improvement comprising bores in the rims formed as oblong holes and ramjet means having a smooth entry surface and a subsequent rough surface arranged between a carburetor and a suction duct (25).
Claim 3
Dependent Claim
33 words
The improvement according to claim 1, wherein the maximum rim width of the rim back (bw) is given by an angle (2 Beta ) of 30* altogether, to the throttle flap shaft axis.
Claim 4
Dependent Claim
57 words
The improvement according to claim 1, wherein the cross sectional area portion of both oblong holes at the top and bottom side of the throttle flap is 12 - 18 percent of the surface of the total rim back, and, that the preferably uniformly shaped oblong holes have a slot width of preferably 0.8 to 1.0 mm.
Claim 5
Dependent Claim
31 words
The improvement according to claim 1, wherein a flow gap (s) exists between the throttle flap and the carburetor duct and is within the limits of preferably 0.05 - 0.08 mm.
Claim 6
Dependent Claim
26 words
The improvement according to claim 1, wherein the upper outer diameter (D) of the ramjet means is equal to the diameter (D) of said suction duct.
Claim 7
Dependent Claim
33 words
The improvement according to claim 1, wherein the total height (h) of said ramjet means is within the limits of 0.6 - 0.8 of the upper outer diameter (D) of said ramjet means.
Claim 8
Dependent Claim
45 words
The improvement according to claim 1, wherein the conicity of the conical entry of said ramjet means is given by the reduction of the exit cross sectional area (FA) by about 10 - 20 percent approximately, as compared to the entry cross sectional area (FE).
Claim 9
Dependent Claim
22 words
The improvement according to claim 1, wherein said rough passage (hw) is half of the total height (h) of said ramjet means.
Claim 10
Dependent Claim
27 words
The improvement according to claim 7, wherein the roughness height (hr) is 0.5 - 0.8 mm, at a carburetor duct diameter (D) of 28 - 40 mm.
Claim 11
Dependent Claim
22 words
The improvement according to claim 9, wherein said roughness height (hr) is made by a fine thread with preferably sharp-edged thread profilE.
Claim 12
Dependent Claim
15 words
The improvement according to claim 9, wherein the roughness height (hr) is made by knurling.
Claim 13
Dependent Claim
54 words
The improvement according to claim 1, wherein said ramjet means is arranged below the carburetor, with its flange between the carburetor and the suction duct to the engine cylinders, is sealed to the outside by two preferably standard uniform flange packings, said flange of said ramjet means being arranged between these two flange packings.
Claim 14
Dependent Claim
73 words
The improvement according to claim 1, wherein said ramjet means is arranged below the carburetor with its flange between the carburetor and the suction duct to the engine cylinders and is sealed by a lower packing which has a hole equal in diameter to the flange diameter and an upper packing which has a hole equal in diameter to the carburetor duct, said ramjet means being rounded at the entry of surface (FE).
Claim 15
Dependent Claim
16 words
The improvement according to claim 1, wherein said throttle flap is made of porous permeable material.
Claim 16
Dependent Claim
15 words
The improvement according to claim 14, wherein said throttle flap is made of sintered metal.
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |