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 | 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. | ||||||
| 2 | Multiple jet carburetor | US70316746 | 1946-10-14 | US2573093A | 1951-10-30 | BURSON CHARLES H |
| 3 | 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. | ||||||
| 4 | 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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| 5 | 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. | ||||||
| 6 | 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. | ||||||
| 7 | Adjusting screw retaining means | US3425672D | 1967-06-01 | US3425672A | 1969-02-04 | SEIGEL SEYMOUR; SHAFFER EDWIN S |
| 8 | 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. | ||||||
| 9 | 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. | ||||||
| 10 | Suction device of internal combustion engine | JP18098181 | 1981-11-13 | JPS5885350A | 1983-05-21 | ISHIDA ATSUJI |
| PURPOSE:To perform smooth transition from the primary to the secondary suction passage in a double suction passage. CONSTITUTION:A secondary slow passage 24 has the first branch opening 28, which is placed at the upstream side of an upstream valve piece 18U of a secondary throttle valve 18 the terminal thereof, and has the second branch opening 28 at the lower side of the upstream valve piece 18U, in the closed status. The second branch opening 28 is communicated to a slow fuel discharge passage 22 whose discharge opening 22Z terminates inside a primary suction passage 10. An open air passage 30 for leading open air is communicated at the terminal to the discharge passage and also communicated its starting end to an air cleaner. In a low and middle load range, a negative pressure is produced in a low load primary suction passage 10, so that an open air is guided in the discharge passage 22. Due to the supply of open air, a fuel in the secondary slow passage 24 is sucked via the second branch opening 28 into the discharge passage 22 to dissipate vapor lock occuring in the secondary slow passage 24, thereby providing smooth transition from the primary to the secondary passage. | ||||||
| 11 | Suction device of internal combustion engine | JP1310181 | 1981-01-31 | JPS57129242A | 1982-08-11 | ISHIDA ATSUJI |
| PURPOSE:To improve the heat efficiency by performing the fuel supply in a low speed region by a primary fuel supply system constructed in accordance with the low-speed region, and performing the fuel supply in middle and high regions by the primary fuel supply system and a secondary fuel supply system having a variable venturi tube. CONSTITUTION:The primary fuel supply system is provided with a small diameter suction passage 11 disposed in a main structure 9, a primary venturi tube 12 formed in the intermediate of the suction passge 11 and having an invariable sectional area, and a primary throttle valve 13 positioned at the downstream side of the primary venturi tube 12 and loaded within the suction passage 11. The secondary fuel supply system comprises a suction passage 30 provided in the main structure 9, a variable venturi tube 31 provided at the intermediate of the suction passage 30, and a secondary throttle valve 32 disposed at the downstream of the variable venturi tube 31. The secondary throttle valve 32 is controlled of its opening degree by a link mechanism connected to the primary throttle valve 13. | ||||||
| 12 | JPS5036837A - | JP7349174 | 1974-06-28 | JPS5036837A | 1975-04-07 | |
| 13 | JPH0143149B2 - | JP18098181 | 1981-11-13 | JPH0143149B2 | 1989-09-19 | ISHIDA ATSUJI |
| 14 | JPS6151141B2 - | JP5472981 | 1981-04-11 | JPS6151141B2 | 1986-11-07 | AZUMA KATSUNORI; KITA TAKEHIKO; TORIO KAZUO |
| 15 | Suction manifold for internal-combustion engine | JP9673681 | 1981-06-24 | JPS57212359A | 1982-12-27 | ISHIDA ATSUJI |
| PURPOSE:To improve distribution between cylinders and the thermal efficiency of the engine by a method wherein the length of suction pipe is shortened to decrease the resistance of a suction air path as much as possible and the suction air pressure impressed on each ramificated path is made proportional to the length of the suction pipe. CONSTITUTION:The shape of the section of the path of the secondary side assembling section 6 of the suction manifold 2 is formed so as to have a flat shape having a longer axis R1 and a shorter axis Rs while the primary side assembling section 4 of the manifold is arranged in the direction of the shorter axis Rs so as to be approached to the secondary side assembling section 6. The suction air is flowed only through the primary side assembling section 4 in low and middle load zone and the responding property of fuel is good in this case, since the assembling section 4 is provided on the flange 12 at the cylinder head side. In a high load zone, the suction air in the assembling section 6 is collided against the outer wall of the assembling section 4, is detoured around the peripheral wall thereof, is flowed into the mainfolds 6-2 and is balanced with the suction air in the other manifolds, therefore, the distributing property may be improved. | ||||||
| 16 | Fuel supplying device for two-barrel carburettor | JP5472981 | 1981-04-11 | JPS57171054A | 1982-10-21 | AZUMA KATSUNORI; KITA TAKEHIKO; TORIO KAZUO |
| PURPOSE:To prevent the fuel from being cut off upon turning of a vehicle by a method wherein a float chamber is provided on the center line of the carburettor with respect to the advancing direction of the vehicle while a fuel distributing deflector is provided at the lower part of a barrel bore located at the side of a secondary valve. CONSTITUTION:A riser 11 is arranged so that an axial line connecting the centers of respective barrel bores 12, 13 at a primary valve side and the secondary valve side is intersected with the center line in the advancing direction of the vehicle almost orthogonally, the float chamber 14C is arranged on the center line of the carburettor in the advancing direction of the vehicle and the fuel distributing deflector 17 introducing the fuel in the secondary valve side, which has a high fuel pressure, to the center of the riser 11. According to such a constitution, when the vehicle is turned at a curve, the fuel in the float chamber 14C is swung, however, the liquid level of which is only varied into the left and right direction with respect to the ends of each nozzles 15, 16, therefore, the supply of the fuel to the nozzles 15, 16 will never be cut off or become too much in volume and whereby the stabilized feeding of the fuel may be attained. | ||||||
| 17 | Intake device for internal combustion engine | JP3753381 | 1981-03-16 | JPS57151051A | 1982-09-18 | ISHIDA ATSUJI |
| PURPOSE:To keep almost constant the quantity of air ejected from an induction passage, by placing a gas source for the induction passage, downstream to a primary throttle valve but upstream to a secondary throttle valve. CONSTITUTION:An induction pipe 83 communicates with a passage 84 and a gathering passage 85. The induction passage 83 communicates with the downstram side of a primary throttle valve 25 through a hole 89 and a passage 88 and with the immediately upstream side of a secondary throttle valve 38 through a passage 84 and a jet port 91. For these reasons, the quantity of gas which is ejected from the induction passage 83 into a combustion chamber is kept almost constant regardless of the change in the state of operation. As a result, the fall in the flame propagation velocity in the medium and high speed ranges is avoided to suppress the generation of unburned hydrocarbon. | ||||||
| 18 | JPH01500919A - | JP50670687 | 1987-05-21 | JPH01500919A | 1989-03-30 | |
| 19 | JPS6347903B2 - | JP3753381 | 1981-03-16 | JPS6347903B2 | 1988-09-26 | ISHIDA ATSUJI |
| 20 | Two-stage carburetor | JP7443683 | 1983-04-27 | JPS59200047A | 1984-11-13 | SHINDOU TAKAO; ISHII MASAYOSHI |
| PURPOSE:To make a carburetor possible to come into compact in size and turn abundant in suction air quantity, by making a throttle bore central distance between primary and secondary side carburetors larger than that of a Venturi tube. CONSTITUTION:A Venturi tube 1 of a primary side carburetor P and a throttle bore 2 in a two-stage carburetor are set up in congruity with a center Np. On the other hand, a center axis Ns, of a Venturi tube 3 in a secondary side carburetor S is set a distance down to L1 with the center axis Np of the Venturi tube 1 in a primary side carburetor. In addition, a distance L2 between a center axis Ns2 and the center axis Np of a throttle bore 4 in the secondary side carburetor is made rather to be larger than the said distance L1 between primary and secondary side Venturi tubes aforesaid. With this constitution, even in time of enlarging each bore, the distance between Venturi tubes is in no case changed, and only it will be enough to make the bore part alone larger in diameter so that the carburetor becomes compact in size as a whole. | ||||||
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