US3978836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction heat control unit in internal combustion engine
Assignee: Toyota Motor Corp
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Filing: 1974-09-24
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Granted: 1976-09-07
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Expires: 1994-09-24
Abstract
Abstract A mixture heating unit for internal combustion engines in which the heater body having a wick wetted by fuel is provided in the intake manifold and the mixture of fuel evaporated from said wick and air supplied thereto is heated and ignited by an ignition device, such mixture being further expedited in its combustion by a catalyst layer, with the resultantly produced combustible gas being introduced into the intake manifold.
Inventors
- 👤 Masaaki Noguchi
- 👤 Masaharu Sumiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:05
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/16; F02M31/163; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
206 words
A suction system for an internal combustion engine, said system comprising: a carburetor for producing a fuel-air mixture; a suction pipe, through which the mixture is supplied to the engine, in fluid communication with said carburetor; a fuel supply source other than the suction pipe; an air supply source other than the suction pipe; a suction heat control unit mounted on said pipe downstream of the carburetor, said heat control unit comprising: a housing attached to the suction pipe, said housing having an opening defined therein which opens into the suction pipe; a porous body for retaining fuel therein, said body being within said housing and being impregnated with fuel; a fuel supply pipe through which fuel is supplied to said porous body; one end of said fuel supply pipe being connected to said housing and the other end thereof being connected to said fuel supply source; an air supply pipe through which air is supplied to said housing; one end of said air supply pipe being connected to said housing and the other end thereof being directly connected to said air supply source; and an ignition means for igniting the mixture of fuel evaporated from said body and air supplied through said air supply pipe.
Claim 2
Dependent Claim
206 words
A suction system for an internal combustion engine, said system comprising: a carburetor for producing a fuel-air mixture; a suction pipe, through which the mixture is supplied to the engine, in fluid communication with said carburetor; a fuel supply source other than the suction pipe; an air supply source other than the suction pipe; a suction heat control unit mounted on said pipe downstream of the carburetor, said heat control unit comprising: a housing attached to the suction pipe, said housing having an opening defined therein which opens into the suction pipe; a porous body for retaining fuel therein, said body being within said housing and being impregnated with fuel; a fuel supply pipe through which fuel is supplied to said porous body; one end of said fuel supply pipe being connected to said housing and the other end thereof being connected to said fuel supply source; an air supply pipe through which air is supplied to said housing; one end of said air supply pipe being connected to said housing and the other end thereof being directly connected to said air supply source; and an ignition means for igniting the mixture of fuel evaporated from said body and air supplied through said air supply pipe.
Claim 3
Dependent Claim
34 words
A suction system as claimed in claim 1, wherein said heat control unit further comprises a catalyst means adjacent to the opening of said housing, and the burned gas passes through said catalyst means.
Claim 4
Dependent Claim
30 words
A suction system as claimed in claim 1, wherein said ignition means comprises a glow plug energizable in response to the switching on of a starting switch of an engine.
Claim 5
Dependent Claim
20 words
A suction system as claimed in claim 1, wherein said fuel supply source comprises a float chamber of the carburetor.
Claim 6
Dependent Claim
17 words
A suction system as claimed in claim 1 wherein said air supply source comprises an air cleaner.
Claim 7
Dependent Claim
37 words
A suction system as claimed in claim 1, wherein said porous body has the shape of a cylinder and is arranged concentrically in said housing, and said cylinder has holes therein for allowing air to pass therethrough.
Claim 8
Dependent Claim
20 words
A suction system as claimed in claim 6, wherein said ignition means extends into the cylinder of said porous body.
Claim 9
Dependent Claim
30 words
A suction system as claimed in claim 2, wherein said control unit further comprises a guide means for conducting the burned gas in the porous body to said catalyst means.
Claim 10
Dependent Claim
35 words
A suction system as claimed in claim 1, wherein said control unit further comprises means, at the opening of said housing, for preventing the flame of the burned gas from flowing into said suction pipe.
Claim 11
Dependent Claim
24 words
A suction system as claimed in claim 1, wherein said control unit further comprises a perforated cover member covering the opening of said housing.
Claim 12
Dependent Claim
168 words
A suction system for an internal combustion engine, said system comprising: a carburetor for producing a fuel-air mixture; a suction pipe, through which the mixture is supplied to the engine, in fluid communication with said carburetor; and a suction heat control unit mounted on said pipe downstream of the carburetor, said heat control unit comprising: a cylindrical housing attached at one end thereof to the suction pipe, said housing having an opening at said one end which opens into the suction pipe; a cylindrical wick coaxially disposed within said housing for retaining fuel therein, said wick being impregnated with fuel; a fuel supply pipe through which fuel is supplied to said housing; an air supply pipe through which air is supplied to said housing; and a glow plug for igniting the mixture of fuel evaporated from said wick and air supplied through said air supply pipe, said plug being disposed coaxially with respect to said housing and extending within said wick from the other end of said housing.
Claim 13
Dependent Claim
168 words
A suction system for an internal combustion engine, said system comprising: a carburetor for producing a fuel-air mixture; a suction pipe, through which the mixture is supplied to the engine, in fluid communication with said carburetor; and a suction heat control unit mounted on said pipe downstream of the carburetor, said heat control unit comprising: a cylindrical housing attached at one end thereof to the suction pipe, said housing having an opening at said one end which opens into the suction pipe; a cylindrical wick coaxially disposed within said housing for retaining fuel therein, said wick being impregnated with fuel; a fuel supply pipe through which fuel is supplied to said housing; an air supply pipe through which air is supplied to said housing; and a glow plug for igniting the mixture of fuel evaporated from said wick and air supplied through said air supply pipe, said plug being disposed coaxially with respect to said housing and extending within said wick from the other end of said housing.
Claim 14
Dependent Claim
189 words
A suction system for an internal combustion engine, said system comprising: an air cleaner; a carburetor for producing a fuel-air mixture, said carburetor having a float chamber; a suction pipe in fluid communication with said carburetor; and a suction heat control unit mounted on said pipe downstream of the carburetor, said heat control unit comprising: a housing attached to said suction pipe, said housing having an opening defined therein which opens into the suction pipe; a porous body for retaining fuel therein, said porous body being within said housing and being impregnated with fuel; a fuel supply pipe through which fuel is supplied to said porous body, one end of said fuel supply pipe being connected to said housing and the other end thereof being directly connected to said float chamber; an air supply pipe through which air is supplied to said housing, one end of said air supply pipe being connected to said housing and the other end thereof being directly connected to said air cleaner; and an ignition means for igniting the mixture of fuel evaporated from said body and air supplied through said air supply pipe.
Claim 15
Dependent Claim
189 words
A suction system for an internal combustion engine, said system comprising: an air cleaner; a carburetor for producing a fuel-air mixture, said carburetor having a float chamber; a suction pipe in fluid communication with said carburetor; and a suction heat control unit mounted on said pipe downstream of the carburetor, said heat control unit comprising: a housing attached to said suction pipe, said housing having an opening defined therein which opens into the suction pipe; a porous body for retaining fuel therein, said porous body being within said housing and being impregnated with fuel; a fuel supply pipe through which fuel is supplied to said porous body, one end of said fuel supply pipe being connected to said housing and the other end thereof being directly connected to said float chamber; an air supply pipe through which air is supplied to said housing, one end of said air supply pipe being connected to said housing and the other end thereof being directly connected to said air cleaner; and an ignition means for igniting the mixture of fuel evaporated from said body and air supplied through said air supply pipe.
References Cited (Backward Citations)
US1408277A
Cited
GB191418448A
Cited
US1657293A
Cited
US1602737A
Cited
US1711938A
Cited
GB279834A
Cited
US2803295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |