CN1804387A - Carburetor - Google Patents

Abstract

The invention relates to a carburetor which at least comprises a main body, a float room, and an idling spray device. Wherein, the main body has a main vent channel whose lower part is connected to the throttle valve; the idling spray device has an idling feeding channel, a idling spray channel, a idling spray hole and a idling oil-gas regulation screw; the idling spray device has a auxiliary air inlet channel which can guide the air into the idling spray channel and a controller to control the switch of said auxiliary air inlet channel. The invention can reduce the fuel outlet amount from the idling feeding channel and reduce the fuel consumption after starting the motorcycle.

Description

Carburetor

[technical field]

The invention relates to a kind of Carburetor, when referring to a kind of idling that makes behind the hot car of motorcycle especially, reduce Carburetor by Carburetor idling oil supply gallery output fuel oil.

[background technique]

Start principle about motorcycle, be ambient air to be introduced in the Carburetor C be mixed into oil gas with fuel oil, utilizing ignition device to produce again in the input engine fires, and the piston start that can promote cylinder produces power, promote the trailing wheel rotation, to drive the synchronous rotation of front-wheel, reach the purpose of advancing, and the structure of Carburetor C and start thereof at first with regard to structure, please be consulted by cooperation figure one, Carburetor is to establish a float chamber 2 below a body 1, body 1 upper interior is established a diaphragm 11, and this diaphragm 11 and a needle-valve 12 link, and needle-valve 12 also can be with the knee-action of diaphragm 11, decide the number of fuel delivery, body 1 one sides and air-strainer (herein not drawing) are connected with, and to introduce peace and quiet air, body 1 side is in addition then established a throttle valve 13, this throttle valve 13 utilizes link component and nozzle (not drawing) to be connected herein, and can decide throttle valve 13 to open size by nozzle rotation size, to adjust the number of fuel delivery.In addition, body 1 is established a passage that communicates with atmosphere 16, this passage 16 is communicated to float chamber 2, so that the pressure in the float chamber 2 is identical with atmospheric pressure, in float chamber 2 and be provided with floating drum 21, floating drum 21 left sides have extended rocking arm 22; rocking arm 22 is that basic point reverses freely with latch 23, and when fuel level reduced in float chamber 2, rocking arm 22 can be clockwise reversing; descend in valve seat 25 and drive floating drum valve 24, make fuel oil enter the interior of float chamber 2 through valve seat 25 and replenish.

The start of Carburetor C again, it is ambient air is introduced body 1 after air-strainer filters main air vent 14, wherein one air-flow 1A can transfer up to flow, another strand air-flow 2A then can be passed through by oil spilling mouth 15, because oil spilling mouth 15 is narrower, the flow velocity that makes air-flow 2A accelerates but pressure then lowers, therefore air-flow 1A just has enough pressure that diaphragm 11 is up pushed up, rise and drive needle-valve 12 by diaphragm 11, identical because of the pressure in the float chamber 2 simultaneously with extraneous atmospheric pressure, by the pressure of the pressure in the float chamber 2, make fuel oil needle-valve 12 ejections all, and be sent to cylinder with air mixing olefiant gas by oil spilling mouth 15 greater than oil spilling mouth 15 places.

The structure of the Carburetor C that commonly uses really can be reached the purpose that mixed oil and gas is transported to cylinder, only, when motorcycle during in idling the supply of fuel oil be the negative pressure that the mat engine running is produced, fuel oil with the float chamber 2 of Carburetor C, by the idling oil supply gallery 27 of Carburetor C through idling fuel injection passage 272, again by 271 outputs of idling nozzle opening, the supply of motorcycle fuel oil when idling is that the aperture by idling oil supply gallery 27 is determined, the aperture of this idling oil supply gallery 27 is to adjust screw 28 by idling oil gas to adjust, the aperture of this idling oil supply gallery 27 generally is during with the idling of motorcycle when the cold car, needed amount of fuel is used as benchmark, therefore after idling oil gas is adjusted screw 28 adjustment, unless this idling is sprayed the aperture of oil supply gallery 27 if any urgent needs, otherwise promptly no longer adjusts.But, the idling of motorcycle needs more fuel oil in cold Che Shiyin, the stable running of engine in the time of could keeping the cold car of motorcycle, yet when the lengthening of motorcycle along with running time, and when becoming hot car state gradually, consistent amount of fuel when the Carburetor C that commonly uses still provides with cold car, thereby formed the waste of fuel oil, this kind situation is in the more metropolitan area of traffic sign, the restriction that is subjected to traffic sign that motorcycle is regular and loitering, the motorcycle that causes the most serious in the oil consumption of idling.Therefore how to improve the disappearance of known Carburetor C, real is a motorcycle manufacturer utmost point big problem to be developed.

[summary of the invention]

The object of the present invention is to provide a kind of Carburetor, when the hot car of motorcycle, may command also imports air and enters in the idling fuel injection passage of Carburetor, reduce the fuel oil output quantity of idling oil supply gallery, and then can reduce the fuel consumption of motorcycle, especially be when loitering in urban drive when motorcycle, its effect that reduces fuel consumption is more remarkable.

A kind of Carburetor of the present invention, this Carburetor includes a body at least, one float chamber, one idling oil spout mechanism, this Carburetor body is provided with main air vent, the downstream side of this main air vent is equipped with throttle valve, this idling oil spout mechanism has the idling oil supply gallery, the idling fuel injection passage, the idling nozzle opening, and one idling oil gas adjust screw, it is characterized in that: this idling oil spout mechanism is provided with the auxiliary-air intake road, this auxiliary-air intake road can import air and enter in the idling fuel injection passage of idling oil spout mechanism, and the controller that this auxiliary-air intake road conducting of control is set or closes.

Described Carburetor is characterized in that: this controller is a thermoinduction controller.

Described Carburetor is characterized in that: this controller is to be located on the cylinder-head cover.

Carburetor of the present invention, mainly be in the idling oil spout mechanism of Carburetor, to connect the auxiliary-air intake road, this auxiliary-air intake road is that mat one controller is controlled its conducting or closed, this controller is to become to close shape when the cold car of motorcycle, and do not provide air in the auxiliary-air intake road, when motorcycle then becomes to open shape during in hot car, motorcycle is when hot car by this, this controller can make the auxiliary-air intake road become the conducting shape, and the importing air enters in the idling fuel injection passage of Carburetor, importing air by this auxiliary-air intake road, make Carburetor in the idling of motorcycle behind hot car, reduce output quantity, and then can reduce the fuel consumption of motorcycle by idling oil supply gallery fuel oil, especially be when loitering in urban drive when motorcycle, its effect that reduces fuel consumption is more remarkable.

[description of drawings]

Fig. 1 is a cross-sectional schematic of commonly using Carburetor.

Fig. 2 is the cross-sectional schematic of Carburetor of the present invention.

Fig. 3 be Carburetor of the present invention controller close schematic representation.

Fig. 4 is the conducting schematic representation of the controller of Carburetor of the present invention.

Fig. 5 is another embodiment's schematic representation of the controller of Carburetor of the present invention.

Fig. 6 is an actuator state schematic representation of the present invention.

Fig. 7 is another actuator state schematic representation of the present invention.

[embodiment]

For the effect that can be easier to understand structure of the present invention and can reach cooperates graphic being described as follows now:

At first see also shown in Figure 2ly, Carburetor C1 of the present invention includes a body 3 and a float chamber 4, idling oil spout mechanism 5 at least.

Establish the main air vent A that runs through in this body 3, the upstream side A1 of this main air vent A is connected with air-strainer (not drawing in the diagram), be provided with throttle valve V in the downstream side A 2 of main air vent A, this throttle valve V by connecting element with refuel handle be connected (not drawing in the diagram), the aperture of throttle valve V is promptly controlled by the oiling handle, the downstream side A2 of this main air vent A is connected in the suction port (not drawing in the diagram) of engine, above body 3, be provided with diaphragm 31 in addition, this diaphragm 31 connects a needle-valve 32, these needle-valve 32 sides can move up and down with diaphragm 31, can determine the number of the output oil mass of Carburetor C1 by this.

Float chamber 4 is belows of being located at body 3, establishes a passage that communicates with atmosphere 33 on body 3, and this passage 33 is communicated to float chamber 4, can make the pressure in the float chamber 4 identical with atmospheric pressure.This float chamber 4 is provided with floating drum 41 in addition, one side of this floating drum 41 is provided with Rocker arm 42, this Rocker arm 42 is the basic point that reverses with a latch 43, and reversed freely, when the fuel level in the float chamber 4 reduces, can be by the reversing of Rocker arm 42, and the floating drum valves 44 that drive in the float chamber 4 descend in valve seat 45, make fuel oil in valve seat 45 enters float chamber 4, advance to make the fuel level in the float chamber 4 to go up.

Idling oil spout mechanism 5, at least include an idling oil supply gallery 51, one idling nozzle opening 52, one idling oil gas is adjusted screw 53, one auxiliary-air intake road 54, an and idling fuel injection passage 55, these idling oil supply gallery 51 1 ends are connected with float chamber 4, can make the fuel oil of float chamber 4 can be by this through idling fuel injection passage 55 by idling nozzle opening 52, spray into the downstream side A2 of the main air vent A of body 3 during in idling in motorcycle, and can fire for engine, still can run well when the idling to keep engine.It is by the screw thread of an elastic element 531 with itself that this idling oil gas is adjusted screw 53, and displacement before and after can be on the sidewall of float chamber 4, by this and the aperture of this idling oil supply gallery 51 of may command, and then the fuel oil in the may command float chamber 4 is by the main air vent A downstream side A2 number of idling oil supply gallery 51 inputs, opposite side at fast fuel injection passage 55 is provided with auxiliary-air intake road 54 in addition, this auxiliary-air intake road 54 imports air in idling fuel injection passage 55 by a delivery pipe 541, in idling fuel injection passage 55, form oil gas with fuel oil from idling oil supply gallery 51, connect a controller 6 on this delivery pipe 541, can this auxiliary-air intake road 54 import air in idling fuel injection passage 55, is that controlled device 6 is controlled.

Controller 6 is to can be a hotness controller, the upper reaches end 6a of this controller 6 is the gas transmission roads (not drawing in the diagram) that are connected in air-strainer, dirty end 6b is connected with the delivery pipe 541 in auxiliary-air intake road 54, it controls opening and closing of auxiliary-air intake passage 54, it is hot car temperature value of being directly proportional with motorcycle, that is when the hot car of motorcycle this controller 6 opening state, and can make the 54 one-tenth conducting shapes in auxiliary-air intake road, import air in idling fuel injection passage 55, when motorcycle during in cold car, then this controller 6 is to become to close shape, and this auxiliary-air intake road 54 promptly can't import air in the idling fuel injection passage 55.

Controller 6 of the present invention is arranged on the Carburetor C1, see also Fig. 3, shown in 4, this controller 6 is that middle vacancy is provided with a wax post 62 in a body 61, this wax post 62 is with paraffin, thermal expansion materials such as alkene are encapsulated in the wax post 62, above wax post 62, establish a heating element 63, these heating element 63 terminations are provided with power supply terminal 64, and establish the actuating strut 65 of a convex shape in wax post 62 downside terminations, this actuating strut 65 is resisted against on the top frame 66,66 of top frames can utilize spring 661 to push a resistor 67 and do upper and lower displacement on path 68, these resistor 67 upsides are provided with the through hole 671 that runs through, as shown in Figure 3, be that vehicle is not when starting or starting the cold car in back, the passage 68 of this controller 6 is stopped by the lower side of resistor 67 and forms closed shape, after car is activated, this power supply terminal 64 can be supplied electricity and give heating element 63, this heating element 63 can come 62 heating of wax post because of energising produces thermal source, this wax post 62 can expand because of being heated, and by the actuating strut 65 and top frame 66 extrusion springs 661 of its bottom side, and promote resistors 67 to decline by spring 661, make the through hole 671 on the resistor 67 just can be positioned on the passage 68, as shown in Figure 4, make 6 one-tenth conducting shapes of controller.

Controller 6 of the present invention also can be arranged on the cylinder-head cover H, as shown in Figure 5, this body 61 need not to be provided with in the upper end heating element 63 or power supply terminal 64, directly controller 6 is installed on the cylinder-head cover H of engine, after being activated by motorcycle, the thermal source that running produced of engine comes the wax post 62 of controller 6 is heated, and same made wax post 62 is heated and expands, and makes controller 6 conductings.

The mode of Carburetor C1 supply engine fuel oil of the present invention is identical with the person of commonly using, so repeat no more, only just improves partly being illustrated.

The present invention is provided with an auxiliary-air intake road 54 in idling oil spout mechanism 5, this auxiliary-air intake road 54 conductings or to close be controlled by a controller 6, idling when motorcycle is activated back Shang Zaileng car by this, as shown in Figure 6, fuel oil is by the float chamber 4 of the Carburetor C1 idling oil supply gallery 51 through idling oil spout mechanism 5, in the downstream side A2 of idling fuel injection passage 55 by the main air vent A of idling nozzle opening 52 input Carburetor C1, this moment is because the motorcycle Shang Zaileng car stage, so the controller 6 in control auxiliary-air intake road 54 is for closing shape, therefore this auxiliary-air intake road 54 can't import air in idling fuel injection passage 55, it is amount of fuel with Carburetor C1 institute supply engine this moment, be promptly to have set originally and to have adjusted the idling supplying fuel amount that screw 53 is set up, to have turned round normally in cold Che Shineng to keep engine through idling oil gas.Only, be activated the normal operation of rear engine with motorcycle, after this motorcycle enters hot car state gradually, this controller 6 also becomes the conducting shape at this moment, as shown in Figure 7, behind 6 one-tenth conducting shapes of controller, can make auxiliary-air intake road 54 import air in idling oil spout mechanism 5, when auxiliary-air intake road 54 can import air in the idling fuel injection passage 55 of idling oil spout mechanism 5, the negative pressure that engine running produced, getting final product simultaneously will be from the fuel oil of idling oil supply gallery 51, the oil gas that air mixed that reaches from auxiliary-air intake road 54 sucks in the downstream side A2 of main air vent A, because the suction of negative pressure has been drawn the air from auxiliary-air intake road 54, make idling oil supply gallery 51 negative-pressure suckings reduce, and then the idling oil supply gallery 51 supplying fuel amounts of this idling oil spout mechanism 5 are reduced.When motorcycle under hot car state, engine reduces because of the colder Che Shike of little its amount of fuel required when the idling of friction impedance, can make engine keep steady running, so the present invention is behind the hot car of motorcycle, just can make the output quantity of the fuel oil minimizing of float chamber 4 by idling oil supply gallery 51 by auxiliary-air intake road 54 this moment, can make Carburetor C1 in the idling of motorcycle under cold car and hot car different conditions by this, supply different supplying fuel amounts, and then can reduce the waste of motorcycle fuel oil when hot car idling.

Especially motorcycle is in the more metropolitan area of traffic sign, and motorcycle is often limited by traffic sign, and often needs oil return to make motorcycle become the idling shape, and it is more remarkable that it reduces the fuel consumption effect.

Claims (3)

1. Carburetor, this Carburetor includes a body at least, one float chamber, one idling oil spout mechanism, this Carburetor body is provided with main air vent, the downstream side of this main air vent is equipped with throttle valve, this idling oil spout mechanism has the idling oil supply gallery, the idling fuel injection passage, the idling nozzle opening, and one idling oil gas adjust screw, it is characterized in that: this idling oil spout mechanism is provided with the auxiliary-air intake road, this auxiliary-air intake road can import air and enter in the idling fuel injection passage of idling oil spout mechanism, and the controller that this auxiliary-air intake road conducting of control is set or closes.

2. Carburetor as claimed in claim 1 is characterized in that: this controller is a thermoinduction controller.

3. Carburetor as claimed in claim 1 is characterized in that: this controller is to be located on the cylinder-head cover.

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