子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Fuel enrichment cold start/run circuit | US11611192 | 2006-12-15 | US07490584B1 | 2009-02-17 | Brian R. White |
| A fuel enrichment cold start/run circuit and method pumps fuel from the fuel pump to an enrichment circuit inlet independently of a carburetor float bowl such that the enrichment circuit is supplied with fuel regardless of the orientation of the float bowl, including angular orientation. | ||||||
| 2 | Carburetor | US574813 | 1975-05-05 | US4072139A | 1978-02-07 | Kuniaki Miyazawa |
| This carburetor comprises plural cell carburetors which are controlled by a servo controller which controls the internal pressure of the carburetor to maintain the pressure constant by opening the air paths of needed number of the cell carburetors.Every one of the cell carburetors is either completely opened or almost closed; that is there is no intermediate opening between said two conditions except for special use.The ratios of air to fuel which is produced in each cell carburetor are predetermined for both the open and almost closed positions.Needed air and fuel are supplied by a combination of the cell carburetors which are selected from combinations of the cell carburetors to be selected for the working condition of the combustion engine. | ||||||
| 3 | Multiple jet carburetor | US70316746 | 1946-10-14 | US2573093A | 1951-10-30 | BURSON CHARLES H |
| 4 | Engine having carburetor with bridge circuit | US10196478 | 2002-07-16 | US06513794B2 | 2003-02-04 | Jeffrey L Clements; Gary L Stenz |
| An internal combustion engine including a cylinder, a crankshaft, a reciprocating piston disposed in the cylinder and operably coupled to the crankshaft, and a carburetor. The carburetor includes an airflow passage through which varying amounts of air flows; a variably positioned throttle valve located in the airflow passage, the amount of air flowing through the airflow passage being varied in response to the position of the throttle valve; a source of stored liquid fuel; a well containing liquid fuel and in independent fluid communication with the source of stored liquid fuel; a nozzle extending between the liquid fuel contained in the well and the airflow passage, the nozzle having an outlet located upstream of the throttle valve in the airflow passage, a variable amount of the liquid fuel contained in the well being conveyed through the nozzle to the airflow passage in response to the amount of air flowing through the airflow passage; and an idle circuit in independent fluid communication with both the source of stored liquid fuel and the well, the idle circuit containing liquid fuel and having at least one fuel outlet located in the airflow passage downstream of the throttle valve, a variable amount of the liquid fuel contained in the idle circuit being conveyed to the fuel outlet in response to the amount of air flowing through the airflow passage. The engine may also include a governor mechanism by which the throttle valve is positioned in response to the speed of the crankshaft. | ||||||
| 5 | ENGINE HAVING CARBURETOR WITH BRIDGE CIRCUIT | US09515521 | 2000-02-29 | US20020125586A1 | 2002-09-12 | Jeffrey Lynn Clements; Gary L. Stenz |
| An internal combustion engine including a cylinder, a crankshaft, a reciprocating piston disposed in the cylinder and operably coupled to said crankshaft, and a carburetor. The carburetor includes an airflow passage through which varying amounts of air flows; a variably positioned throttle valve located in the airflow passage, the amount of air flowing through the airflow passage being varied in response to the position of the throttle valve; a source of stored liquid fuel; a well containing liquid fuel and in independent fluid communication with the source of stored liquid fuel; a nozzle extending between the liquid fuel contained in the well and the airflow passage, the nozzle having an outlet located upstream of the throttle valve in the airflow passage, a variable amount of the liquid fuel contained in the well being conveyed through the nozzle to the airflow passage in response to the amount of air flowing through the airflow passage; and an idle circuit in independent fluid communication with both the source of stored liquid fuel and the well, the idle circuit containing liquid fuel and having at least one fuel outlet located in the airflow passage downstream of the throttle valve, a variable amount of the liquid fuel contained in the idle circuit being conveyed to the fuel outlet in response to the amount of air flowing through the airflow passage. The engine may also include a governor mechanism by which the throttle valve is positioned in response to the speed of the crankshaft. | ||||||
| 6 | Intake passage construction for internal combustion engines | US430066 | 1982-09-30 | US4448164A | 1984-05-15 | Tokuzi Ishida |
| An intake passage construction for an internal combustion engine has a primary intake passage for supplying an air-fuel mixture when the engine operates under a full range of loads and a secondary intake passage for supplying an air-fuel mixture when the engine operates under relatively high loads. A secondary slow fuel passage has a pair of fuel supply ports opening into the secondary intake passage, and a fuel drain passageway extends from one of the fuel supply ports and has a fuel discharge port opening into the primary intake passage. Ambient air can be introduced into the fuel drain passageway in response to a vacuum developed in the primary intake passage so that fuel can be drained from the secondary slow fuel passage to prevent vapor lock therein. The fuel discharge port of the fuel drain passageway may open into an induction pipe. | ||||||
| 7 | Two-stage carburetor with improved idle air fuel mixture distribution | US37521573 | 1973-06-29 | US3887661A | 1975-06-03 | OJALA WILLIAM K |
| A two-stage carburetor having improved cylinder-to-cylinder idle air/fuel mixture distribution is disclosed. The carburetor includes a controlled air leakage which is provided on one side of the idle air/fuel mixture source to balance the leakage of air around the throttle valve in the secondary bore which is located on the opposite side of the idle air/fuel mixture source. Bleed air may be controlled by use of a fixed restriction, sized to approximate the mean secondary throttle air leakage under normal engine operating conditions or it may be provided with an adjustable bleed, calibrated to equal the air leakage around the secondary throttle blade.
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| 8 | Engine having carburetor with bridge circuit | EP00122672.9 | 2000-10-27 | EP1148230B1 | 2007-04-25 | Clements, Jeffrey Lynn |
| 9 | Engine having carburetor with bridge circuit | US09515521 | 2000-02-29 | US06499726B2 | 2002-12-31 | Jeffrey Lynn Clements |
| An internal combustion engine including a cylinder, a crankshaft, a reciprocating piston disposed in the cylinder and operably coupled to said crankshaft, and a carburetor. The carburetor includes an airflow passage through which varying amounts of air flows; a variably positioned throttle valve located in the airflow passage, the amount of air flowing through the airflow passage being varied in response to the position of the throttle valve; a source of stored liquid fuel; a well containing liquid fuel and in independent fluid communication with the source of stored liquid fuel; a nozzle extending between the liquid fuel contained in the well and the airflow passage, the nozzle having an outlet located upstream of the throttle valve in the airflow passage, a variable amount of the liquid fuel contained in the well being conveyed through the nozzle to the airflow passage in response to the amount of air flowing through the airflow passage; and an idle circuit in independent fluid communication with both the source of stored liquid fuel and the well, the idle circuit containing liquid fuel and having at least one fuel outlet located in the airflow passage downstream of the throttle valve, a variable amount of the liquid fuel contained in the idle circuit being conveyed to the fuel outlet in response to the amount of air flowing through the airflow passage. The engine may also include a governor mechanism by which the throttle valve is positioned in response to the speed of the crankshaft. | ||||||
| 10 | ENGINE HAVING CARBURETOR WITH BRIDGE CIRCUIT | US10196478 | 2002-07-16 | US20020185754A1 | 2002-12-12 | Jeffrey Lynn Clements; Gary L. Stenz |
| An internal combustion engine including a cylinder, a crankshaft, a reciprocating piston disposed in the cylinder and operably coupled to said crankshaft, and a carburetor. The carburetor includes an airflow passage through which varying amounts of air flows; a variably positioned throttle valve located in the airflow passage, the amount of air flowing through the airflow passage being varied in response to the position of the throttle valve; a source of stored liquid fuel; a well containing liquid fuel and in independent fluid communication with the source of stored liquid fuel; a nozzle extending between the liquid fuel contained in the well and the airflow passage, the nozzle having an outlet located upstream of the throttle valve in the airflow passage, a variable amount of the liquid fuel contained in the well being conveyed through the nozzle to the airflow passage in response to the amount of air flowing through the airflow passage; and an idle circuit in independent fluid communication with both the source of stored liquid fuel and the well, the idle circuit containing liquid fuel and having at least one fuel outlet located in the airflow passage downstream of the throttle valve, a variable amount of the liquid fuel contained in the idle circuit being conveyed to the fuel outlet in response to the amount of air flowing through the airflow passage. The engine may also include a governor mechanism by which the throttle valve is positioned in response to the speed of the crankshaft. | ||||||
| 11 | Alcohol fuel operation conversion means for internal combustion engines | US175043 | 1988-01-19 | US4879975A | 1989-11-14 | John R. McC. Bennett |
| A modified carburetion and manifold arrangement to enable internal combustion engines to efficiently use fuels such as alcohols having high latent heat of vaporization. A variable venturi carburetion means (30) is combined with two manifolds-one (20) being larger for use during medium to high power operation and a second smaller manifold (24) for starting and low power operation. | ||||||
| 12 | Carburetor fuel bowl assembly | US940680 | 1986-12-11 | US4737319A | 1988-04-12 | Richard M. Saxby |
| An improved fuel bowl assembly adapted to be detachably mounted upon a main carburetor body minimizes exposure of sealing gaskets to standing heads of fuel contained in the bowl and affords ready access to the interior of the bowl without risk of fuel spillage. A one piece housing is formed with a bathtub-like fuel bowl chamber whose open top is closed by a detachable cover. The front wall of the housing is provided with fuel and air bleed passages so arranged that fuel flowing from the bowl through these passages must rise above the normal level of fuel maintained in the bowl before exposure to the gasket which seals the front surface of the front wall of the housing to the side of the main carburetor body. A float valve mounted on the bottom side of the cover controls the flow of fuel from an inlet passage in the cover to maintain a desired level of fuel in the bowl, and the moving parts of an accelerating pump are also mounted on the cover. Thus, removal of the cover provides complete access to the float valve, accelerating pump and the interior of the bowl without requiring detaching the bowl assembly from the main carburetor body. | ||||||
| 13 | Adjusting screw retaining means | US3425672D | 1967-06-01 | US3425672A | 1969-02-04 | SEIGEL SEYMOUR; SHAFFER EDWIN S |
| 14 | Engine having carburetor with bridge circuit | EP00122672.9 | 2000-10-27 | EP1148230A3 | 2004-01-14 | Clements, Jeffrey Lynn |
A carburetor (22a) including an airflow passage (34) through which varying amounts of air flows, a variably positioned throttle valve (36) located in the airflow passage, the amount of air flowing through the airflow passage being varied in response to the position of the throttle valve, a source of stored liquid fuel, a well (48) containing liquid fuel and in independent fluid communication with the source of stored liquid fuel, a nozzle (44) extending between the liquid fuel contained in the well and the airflow passage, the nozzle having an outlet (42) located upstream of the throttle valve in the airflow passage, a variable amount of the liquid fuel contained in the well being conveyed through the nozzle to the airflow passage in response to the amount of air flowing through the airflow passage, and an idle circuit (54a) containing liquid fuel and having at least one idle fuel outlet (56, 58, 60) located in the airflow passage downstream of the throttle valve, a variable amount of the liquid fuel contained in the idle circuit being conveyed to the idle fuel outlet in response to the amount of air flowing through the airflow passage, characterized by the idle circuit being in independent fluid communication with the source of stored liquid fuel and the well. The present invention also includes, in combination with this carburetor, an internal combustion engine (20a). |
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| 15 | ALCOHOL FUEL OPERATION CONVERSION MEANS FOR INTERNAL COMBUSTION ENGINES. | EP87903221 | 1987-05-21 | EP0270576A4 | 1989-08-29 | BENNETT JOHN ROBERT MCRAE |
| A modified carburetion and manifold arrangement to enable internal combustion engines to efficiently use fuels such as alcohols having high latent heat of vaporisation. A variable venturi carburetion means (30) is combined with two manifolds - one (20) being larger for use during medium to high power operation and a second smaller manifold (24) for starting and low power operation. | ||||||
| 16 | FUEL SUPPLY SYSTEM FOR FOUR-STROKE ENGINES | EP01960728.2 | 2001-07-23 | EP1403502A1 | 2004-03-31 | DUASO PARDO, Javier |
Especially applicable to motorcycle engines, it consists of establishing in the main conduct through which the air from the filter (FA) arrives, whose flow is controlled by a butterfly valve of gases or main valve (1), a secondary butterfly valve (2) that keeps each operation in functioning, be it in stationary or transitory regime, the opening being appropriate for producing the loss of load that, added to the Venturi effect generated in the conduct section downstream from the aforementioned secondary butterfly valve (2) and the loss the load of the air filter (FA), giving rise to the appropriate suction at the emulsioned fuel outlet (3), the fuel from a cell (4) of constant level being mixed with the air flow, joined to the atmosphere, such that the suction at the outlet (3) produces a flow through and controlled by the main distributor (5), which emulsioned with the air from the tube (9), equipped with transverse holes, discharges in the central conduct of the system (11) through the outlet (3). |
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| 17 | Engine having carburetor with bridge circuit | EP00122672.9 | 2000-10-27 | EP1148230A2 | 2001-10-24 | Clements, Jeffrey Lynn |
A carburetor (22a) including an airflow passage (34) through which varying amounts of air flows, a variably positioned throttle valve (36) located in the airflow passage, the amount of air flowing through the airflow passage being varied in response to the position of the throttle valve, a source of stored liquid fuel, a well (48) containing liquid fuel and in independent fluid communication with the source of stored liquid fuel, a nozzle (44) extending between the liquid fuel contained in the well and the airflow passage, the nozzle having an outlet (42) located upstream of the throttle valve in the airflow passage, a variable amount of the liquid fuel contained in the well being conveyed through the nozzle to the airflow passage in response to the amount of air flowing through the airflow passage, and an idle circuit (54a) containing liquid fuel and having at least one idle fuel outlet (56, 58, 60) located in the airflow passage downstream of the throttle valve, a variable amount of the liquid fuel contained in the idle circuit being conveyed to the idle fuel outlet in response to the amount of air flowing through the airflow passage, characterized by the idle circuit being in independent fluid communication with the source of stored liquid fuel and the well. The present invention also includes, in combination with this carburetor, an internal combustion engine (20a). |
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| 18 | ALCOHOL FUEL OPERATION CONVERSION MEANS FOR INTERNAL COMBUSTION ENGINES | EP87903221.0 | 1987-05-21 | EP0270576A1 | 1988-06-15 | BENNETT, John, Robert, McRae |
| Un agencement modifié à carburateur et à collecteur permet à des moteurs à combustion interne d'utiliser efficacement des carburants tels que des alcools ayant une chaleur de vaporisation latente élevée. Un carburateur (30) à diffuseur variable est combiné avec deux collecteurs, le plus grand (20) étant destiné à être utilisé lorsque le moteur fonctionne à puissance moyenne - élevée et le plus petit (24) lorsque le moteur fonctionne à puissance de démarrage et à basse puissance. | ||||||
| 19 | Double venturi type carburetor | JP6121785 | 1985-03-26 | JPS61223259A | 1986-10-03 | YOKOI YOSHINORI |
| PURPOSE:To improve the response under low speed region and the output under high speed region by arranging a high speed Venturi at higher position than a low speed Venturi while projecting the fuel nozzle of high speed Venturi into the Venturi from below. CONSTITUTION:Low and high speed Venturis 1, 2 are juxtaposed in front and rear while coupling the outputs to the intake tube of single engine. Here, the high speed Venturi 2 is arranged at higher position than the low speed Venturi 1. Respective Venturi 1, 2 is opened/closed by sliding respective tubular throttle valve 3 up and down. The fuel nozzle 4 of low speed Venturi 1 is opened to be slightly exposed in the Venturi 1 while the fuel nozzle 5 of high speed Venturi 2 is projected into the Venturi 2 and opened at high position. Consequently, it can be operated with high response under low speed region while high output can be obtained under intermediate/high speed region. | ||||||
| 20 | Air-fuel ratio controlling apparatus for engine having carburetor | JP4259884 | 1984-03-05 | JPS60187749A | 1985-09-25 | NOMURA HIROYUKI; KOMATSU ITSUO |
| PURPOSE:To enable to purify the exhaust gas and to increase the output of an engine over the entire operational range of the engine, by lowering the air-fuel ratio by stopping feedback control of a carburetor when a secondary throttle valve that is opened only at the time of high-load operation of the engine is operated. CONSTITUTION:When a primary throttle valve 14 of a carburetor 10 is fully opened, a secondary throttle valve 18 is opened by operating an actuator 30A by the negative pressure acted at a port 24 of a venturi 20. That the secondary throttle valve 18 is opened is detected by an opening detecting switch 36, and the output signal is applied to a control unit 42. The control unit 42 executes ordinary feedback control of a main air bleed 38, a slow air bleed 40 and a control solenoid valve 34 until the output signal of said switch 36 is applied to the control unit 42. However, when the output signal of the switch 36 is applied to the unit 42, it stops feedback control and lowers the air-fuel ratio. | ||||||
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