Patent US3712281A successfully refreshed from Google Patents.
US3712281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine incorporating modification to reduce pollution in exhaust therefrom
Assignee: Individual
•
Filing: 1971-03-23
•
Granted: 1973-01-23
•
Expires: 1991-03-23
Abstract
Abstract An internal combustion engine which includes certain modifications to reduce the pollution thereof. The exhaust stream from the exhaust manifold of the engine is returned in part or in whole, subject to the control of a valve means, for recycling through the carberator. Dependent upon the loading of the engine, a variable supply of oxygen is interjected at the carberator to enhance the extent of combustion and thereby reduce the noncombusted hydrocarbon gases. Recirculation is further accompanied by the injection of steam at the carberator to slightly cool the gases drawn into the internal combustion engine, thereby increasing the compression and tending to improve the extent of combustion within the engine.
Inventors
- 👤 A Ruth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
F; F02; F02M; F02M25/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
188 words
A pollution control system adapted to be installed on an internal combustion engine which internal combustion engine incorporates an exhaust manifold and a carberator, and comprising: a. a conduit means; b. valve means connecting said conduit means with the exhaust manifold of an internal combustion engine for deriving a portion thereof controllably determined by said valve means of the exhaust gases from said engine; c. said conduit means being connected at its other end to supply exhaust gases to the carberator of such an engine to be drawn therein along with air from the atmosphere and to be mixed with fuel in the customary functioning of the carberator; d. a container means adapted to receive a supply of water therein; e. a heat exchanger made integral with and deriving heat from the exhaust manifold of such engine and connected with said container means for receiving water therefrom; f. second conduit means communicating water vapor from said heat exchanger to the carberator for adding water vapor to the gases drawn in by the carberator of such an engine; and, g. means for controllably injecting elemental oxygen into the carberator.
Claim 2
Dependent Claim
188 words
A pollution control system adapted to be installed on an internal combustion engine which internal combustion engine incorporates an exhaust manifold and a carberator, and comprising: a. a conduit means; b. valve means connecting said conduit means with the exhaust manifold of an internal combustion engine for deriving a portion thereof controllably determined by said valve means of the exhaust gases from said engine; c. said conduit means being connected at its other end to supply exhaust gases to the carberator of such an engine to be drawn therein along with air from the atmosphere and to be mixed with fuel in the customary functioning of the carberator; d. a container means adapted to receive a supply of water therein; e. a heat exchanger made integral with and deriving heat from the exhaust manifold of such engine and connected with said container means for receiving water therefrom; f. second conduit means communicating water vapor from said heat exchanger to the carberator for adding water vapor to the gases drawn in by the carberator of such an engine; and, g. means for controllably injecting elemental oxygen into the carberator.
Claim 3
Dependent Claim
36 words
The invention of claim 1 wherein said container means includes a conduit connected through a check valve means to said heat exchanger means, and a second conduit communicating from said heat exchanger means to the carberator.
Claim 4
Dependent Claim
62 words
The invention of claim 1 including cooperative with said engine: a. an exhaust pipe; b. muffler; c. tail pipe; and wherein said invention incorporates d. valve means in said tail pipe; e. valve operator for said valve means; f. thermostat connected to said engine for determining the operating temperatures therein; and, g. means for connecting said thermostat with said valve operator means.
Claim 5
Dependent Claim
29 words
The invention of claim 1 further including a mixing tee interposed between the carberator and an air cleaner and having an entry port for connection with said conduit means.
Claim 6
Dependent Claim
33 words
The invention of claim 4 further including an entry port for connection with the air cleaner and having therein a flap valve preventing backfires and the like from escaping into the air cleaner.
Claim 7
Dependent Claim
33 words
The invention of claim 5 further including an outlet port having a flap valve therein opening out from said mixing tee and further including spring bias means tending to close said flap valve.
Claim 8
Dependent Claim
16 words
The invention of claim 6 further including a conduit for supplying elemental oxygen into the carberator.
Claim 9
Dependent Claim
46 words
The invention of claim 1 including: a. a venturi incorporated in said conduit means; b. a closed chamber surrounding said venturi; and, c. a suction line connected into said chamber and adapted to be connected at its other end to the crank case of the engine.
Claim 10
Dependent Claim
22 words
The invention of claim 8 further including an additional suction line adapted to be connected to the valve cover of the engine.
Claim 11
Dependent Claim
43 words
The invention of claim 9 wherein said venturi includes a nozzle of decreasing diameter and a spaced concentric lip thereabout and joined to an additional portion Of said conduit means for providing a path of flow of the exhaust gases from the exhaust.
Claim 12
Dependent Claim
19 words
The invention of claim 10 wherein gases are drawn through the first and second suction lines into the venturi.
Claim 13
Dependent Claim
63 words
The invention of claim 11 including cooperative with said engine: a. an exhaust pipe; b. a muffler; c. tail pipe; and wherein said invention incorporates d. valve means in said tail pipe; e. valve operator for said valve means; f. thermostat connected to said engine for determining the operating temperatures therein; and, g. means for connecting said thermostat with said valve operator means.
Claim 14
Dependent Claim
29 words
The invention of claim 12 further including a mixing tee interposed between the carberator and an air cleaner and having an entry port for connection with said conduit means.
Claim 15
Dependent Claim
91 words
The invention of claim 12 further including a mixing tee interposed between the carberator and an air cleaner and having an entry port for connection with said conduit means; an entry port for connection with the air cleaner and having therein a flap valve preventing backfires and the like from escaping into the air cleaner; an outlet port having a flap valve therein opening out from said mixing tee and further including spring bias means tending to close said flap valve; and, a conduit for supplying elemental oxygen into the carberator.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |