US4078527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste-gas suppressor for internal-combustion engines
Assignee: Individual
•
Filing: 1976-12-09
•
Granted: 1978-03-14
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Expires: 1996-12-09
Abstract
Abstract Waste-gas suppressor for internal-combustion engines, utilizing negative pressure generated in the carburetor of the engine. A flow-regulator valve operated by the negative pressure adjusts water flow in proportion to engine speed, the water being evaporated by the exhaust heat of the engine. The resulting steam is supplied to the combustion chamber of the engine.
Inventors
- 👤 Sachio Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:37
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/022; F02M25/032; F02M25/035; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
166 words
A waste-gas suppressor for an internal-combustion engine (4) which includes a carburetor (12), a combustion chamber and an exhaust pipe (5), the suppressor comprising: a water reservoir (1); a filter (8); a flow-regulator valve (9) having means (28) to adjust and control automatically the flow of water from said reservoir by negative pressure generated in said carburetor, and at the same time to control maximum water flow in said valve; a negative-pressure inlet and a water inlet being constituted by a single common hole (39) within said valve; a steam generator (6) which evaporates the water supplied to the same through said filter, said valve and a conduit (7), by the heat of said exhaust pipe in a sealed space (17) of said generator; and a steam tube (16) which leads the steam generated in said generator directly into said carburetor; wherein said conduit, said inner space and said steam tube constitute a suction circuit to provide the negative pressure from said carburetor to said valve.
Claim 2
Dependent Claim
166 words
A waste-gas suppressor for an internal-combustion engine (4) which includes a carburetor (12), a combustion chamber and an exhaust pipe (5), the suppressor comprising: a water reservoir (1); a filter (8); a flow-regulator valve (9) having means (28) to adjust and control automatically the flow of water from said reservoir by negative pressure generated in said carburetor, and at the same time to control maximum water flow in said valve; a negative-pressure inlet and a water inlet being constituted by a single common hole (39) within said valve; a steam generator (6) which evaporates the water supplied to the same through said filter, said valve and a conduit (7), by the heat of said exhaust pipe in a sealed space (17) of said generator; and a steam tube (16) which leads the steam generated in said generator directly into said carburetor; wherein said conduit, said inner space and said steam tube constitute a suction circuit to provide the negative pressure from said carburetor to said valve.
Claim 3
Dependent Claim
32 words
The suppressor as defined in claim 1, wherein a soft synthetic resin sheet is used as a surface material for said water reservoir (1), and canvas is applied to the back thereof.
Claim 4
Dependent Claim
30 words
The suppressor as defined in claim 1, wherein said filter (8) is formed with felt layers (8a, 8b) and with ion-exchange resin layers (8c) which lie between said felt layers.
Claim 5
Dependent Claim
158 words
The suppressor as defined in claim 1, wherein said valve (9) includes a body (26) having a chest (37) and a water-outlet hole (39) constituting said single common hole, a cover (27) mounted water-tightly to said body in spiral form, said adjusting means (28) being attached in spiral form within said cover so as to be freely adjustable, a needle spool (30) in which a sealing member (29) is provided at one end, contained in said body, and a spring (32) around said spool and whose pressure against said sealing member is set so that a water-inlet hole (31) is ordinarily closed by said sealing member, said spool closing said outlet hole at the opposite side by the negative pressure from said carburetor (12) during decelerated rotation of the engine (4), a valve hole (38) being opened slightly during no-load rotation of the engine, and said valve hole being maximally opened during constant accelerated rotation of the engine.
Claim 6
Dependent Claim
84 words
The suppressor as defined in claim 4, wherein said adjusting means (28) includes a threaded tube attached in spiral form to said cover (27) so as to move freely, the inside of said tube forms said water-inlet hole (31), a surface (28a) of said threaded tube forms a stopper which controls the moving stroke of said spool (30), and another surface of said threaded tube forms a notched portion (34) for an external screwdriver and the like tool used to adjust said threaded tube.
Claim 7
Dependent Claim
29 words
The suppressor as defined in claim 5, wherein said sealing member (29) includes at least one nitrile-rubber layer (29a) having high water-tightness, and at least one polycarbonate-resin layer (29b).
Claim 8
Dependent Claim
25 words
The suppressor as defined in claim 5, wherein said water-inlet hole (31) is a narrow aperture defining a flow path (33) of a small diameter.
Claim 9
Dependent Claim
38 words
The suppressor as defined in claim 1, wherein said sealed space (17) is filled with at least one reticulate and porous substance (21), such as layers of stainless meshes, metallic wool, glass wool, rock fiber and non-woven cloth.
Claim 10
Dependent Claim
98 words
The suppressor as defined in claim 8, wherein said generator (6) includes a first short tube (22) of said conduit (7), which also leads to said sealed space (17), and a second short tube (25) of said steam tube (16), said first short tube being formed so that at one end thereof an aperture (24) of a small diameter is made, and the other end thereof reaches the bottom of said sealed space, while said second short tube has a larger diameter than that of said first short tube, and connects with the top of said sealed space.
Claim 11
Dependent Claim
37 words
The suppressor as defined in claim 1, wherein one end of said steam tube (16), whose other end is attached to said generator (6), connects with a positive crankcase-ventilation (PCV) hose (14) to a Y-shaped joint (15).
Claim 12
Dependent Claim
30 words
The suppressor as defined in claim 1, wherein one end of said steam tube (16), whose other end is attached to said generator (6), connects directly with said carburetor (12).
References Cited (Backward Citations)
US1312948A
Cited
US1357039A
Cited
US1405062A
Cited
US1473506A
Cited
US1539560A
Cited
US1897025A
Cited
US2188175A
Cited
US2444628A
Cited
US2836403A
Cited
US3856901A
Cited
US3955542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |