CN2215597Y

CN2215597Y - Spray type carburettor

Info

Publication number: CN2215597Y
Application number: CN 94229606
Authority: CN
Inventors: 朱文忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-16
Filing date: 1994-09-16
Publication date: 1995-12-20
Anticipated expiration: 2004-09-16

Abstract

The utility model relates to a spray type carburetor for a gasoline engine. Self-absorption type gasoline supply in the prior art is changed into artesian type gasoline supply. The gasoline spraying pipe 4 of the utility model is butted with the gasoline level of a float chamber, and a nozzle tip switch 3 which is connected with an air throttle 1 through a lever 2 is additionally arranged in the float chamber. When the air throttle is opened, the nozzle tip switch is opened, and gasoline flows in the gasoline spraying pipe and in a premixing chamber 5 which is arranged below the gasoline spraying pipe. The gasoline which enters a cavity 6 for atomization for the second time after atomized in the gasoline spraying pipe and the premixing chamber for the first time is supplied for the combustion of an engine. The utility model which can suitable for gasoline mass of the engine under various operating conditions has the advantages of compact structure, simple production, sufficient combustion, and gasoline consumption saving.

Description

Spray type carburettor

The utility model relates to a kind of petrolic Carburetor, especially a kind of spray-type Carburetor.

At present, Carburetor on the motor car engine is self-priming structure, the outlet end of its spray bar is higher than the pasta in the float chamber, this spray bar produces pull of vacuum by the engine rotation piston, with the gasoline sucking-off in the float chamber, the gasoline of institute's sucking-off through trunnion and the air mixing that enters in the cavity, is admitted to engine combustion again then.The fuel delivery of this self-feeding carburettor size is relevant with engine speed and degree of vacuum (suction), oil consumption when its disadvantage is middle and slow speed of revolution, and oil starvation when loading high rotating speed greatly, and gasoline combustion is insufficient, easy befouling environment.

The purpose of this utility model provides a kind of spray-type Carburetor, and it changes self-priming for self-flow type, and the size of fuel delivery be can't help engine speed and pull of vacuum decision, the mainly switching by closure, what and air demand of control fuel delivery how much.

The purpose of this utility model is achieved in that in the Carburetor that comprises closure, cavity, float chamber, spray bar, small venturi, big trunnion, increase oil nozzle switch, lever and premixing chamber, changing a spray bar is a plurality of spray bars, the outlet end that changes spray bar is higher than pasta and is lower than pasta for spray bar integral body, and open an oil-feed ditch in the spray bar ingress, on the spray bar pipeline, have inlet hole and spray hole.Structure characteristic of the present utility model is: 1. the oil nozzle switch is installed in float chamber, and the oil nozzle switch is connected with closure through pull bar; 2. in cavity, be provided with 2～8 spray bars; 3. the inlet of spray bar has a circle oil-feed ditch, and the top of spray bar has inlet hole, and the below is drilled with spray hole, and a part of spray hole communicates with big trunnion, and a part of spray hole communicates with cavity; 4. one circle premixing chamber is arranged between big trunnion and cavity inner wall, and the premixing chamber is positioned at the below of oil-feed ditch, and communicates with the oil-feed ditch, has air hole and spray hole in the premixing chamber.

Oil inlet pipe of the present utility model is lower than the gasoline surface in the float chamber, and when closure was opened, the oil nozzle switch upwards lifted under leverage, promptly opened oil duct, made gasoline enter spray bar.Before entering spray bar, through the oil-feed ditch, a gasoline part that enters the oil-feed ditch enters rapidly in each spray bar gasoline earlier, and a part flows into the premixing chamber of oil-feed ditch below.Because air hole is arranged above the premixing chamber, the gasoline that flows into the premixing chamber can obtain abundant premix, and the mixed gas behind the premix is sprayed in the cavity from the spray hole of below, premixing chamber with " foam " shape again, and makes mixed aerosol for the second time with the air that flows in the cavity.Flow into the gasoline in the spray bar, under the effect of the inlet hole above the spray bar, obtain mixing for the first time, mixed gas sprays in the cavity with the spray hole of " foam " shape from the spray bar below, carries out the mixed aerosol second time with the air that enters in the cavity once more.Through the gasoline of secondary-atomizing for engine combustion, sufficient combustion not only, and can reduce environmental pollution, energy saving.

Fuel system of the present utility model is not the pull of vacuum by spray bar, but gravity flow, thereby it is little with motor commentaries on classics and degree of vacuum magnitude relationship, its fuel delivery is directly controlled by closure.The variation of oil nozzle switch breakdown size opens and closes size variation with closure and changes synchronously, and promptly what of what and air demand of fuel delivery open and close the variation of size and variation synchronously with closure.In addition, in the prior art, automobile accelerating pump and closure are connected as a single entity, and accelerating pump is synchronized with the movement with closure, and therefore, the mixed gas that is provided can adapt to the needs of the various operating modes of motor fully.

Adopt such scheme, compact structure, processing is simple, and sufficient combustion is saved oil consumption, can carry out fuel feeding by the need oil mass of various operating modes, can reduce the pollution of waste gas to environment.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a plan view of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 1, Fig. 2 also are embodiments of the present utility model.

In Fig. 1, Fig. 2, the utility model is made up of closure 1, lever 2, oil nozzle switch 3, spray bar 4, premixing chamber 5, cavity 6, float chamber 7, small venturi 11, big trunnion 12.Oil nozzle switch 3 wherein is installed in float chamber 7, and oil nozzle switch 3 is connected with closure 1 through lever 2; In cavity 6, be provided with 3 spray bars 4; The inlet car of spray bar 4 has a circle oil-feed ditch 10, and the top of spray bar 4 is drilled with an inlet hole 9, and the below is drilled with two spray holes 8, and wherein a spray hole communicates with big trunnion 12, and a spray hole communicates with cavity 6; One circle premixing chamber 5 is arranged between big trunnion 12 and cavity 6 inwalls, and premixing chamber 5 is positioned at the below of oil-feed ditch 10, and communicates with oil-feed ditch 10, has air hole and spray hole in premixing chamber 5.

Claims

1, a kind of spray-type Carburetor comprises closure (1), cavity (6), float chamber (7), spray bar (4), small venturi (11), big trunnion (12), it is characterized in that:

Oil nozzle switch (3) 1. is installed in float chamber (7), and oil nozzle switch (3) is connected with closure (1) through lever (2);

2. in cavity (6), be provided with 2～8 spray bars (4);

3. the inlet of spray bar (4) has a circle oil-feed ditch (10), and the top of spray bar (4) has inlet hole (9), and the below is drilled with spray hole (8), and a part of spray hole (8) communicates with big trunnion (12), and a part of spray hole (8) communicates with cavity (6);

One circle premixing chamber (5) is 4. arranged between big trunnion (12) and cavity (6) inwall, and premixing chamber (5) are positioned at the below of oil-feed ditch (10), and communicate with oil-feed ditch (10), have air hole and spray hole on premixing chamber (5).