CN2231316Y

CN2231316Y - Changeable venturi carbureter with ring controlled power jet assembly

Info

Publication number: CN2231316Y
Application number: CN 95207014
Authority: CN
Inventors: 廖清照
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-03
Filing date: 1995-04-03
Publication date: 1996-07-17
Anticipated expiration: 2005-04-03

Abstract

The utility model relates to a changeable venturi carbureter with ring controlled power jet assembly, which can provide strengthened blended fuel in the period of engine loading. The utility model comprises an enclosure, a fuel storage tank, a throat part, a total fuel channel and the power jet assembly. The power jet assembly contains a jet valve for controlling the fuel flowing into a jet fuel chamber, a biasing mechanism making the chamber leading to a seal position and a wind resistance power ring which is adapted to the change of the vacuum degree of an engine and freely rotated. When the vacuum degree of the engine drops to a prearranged amount, the utility model can make a control rod open the jet valve.

Description

The variable Venturi's pipe vaporizer of tool ring controlled power jet assembly

The utility model relates to a kind of variable Venturi's pipe vaporizer of tool ring controlled power jet assembly, and it can provide enhanced mixing fuel required with supply engine at the engine loading period.

When engine need produce exceed the desired power of cruising during, the fuel mixture of more strengthening must be arranged, usually, fortified mixture is before spraying into vaporizer throat, this air and fuel are done to mix for the first time in gauge line, and when exceeding the amount that gauge line can supply as required fuel, engine speed promptly is restricted, enter vaporizer throat unless spray extra fuel, so dynamic valve just is commonly used to finish the more invigoration effect of this fuel.

Traditional dynamic valve assembly comprises a valve by piston control, it utilizes the antagonism air-distributor vacuum to produce the spring bias that strength acted on, drive to the enable possition, when intake manifold vacuum reduces, spring force exceeds the power that vacuum produces, dynamic valve is promptly opened, allow that additional fuel flows in total fuel channel, fuel adds degree directly to be decided because of spring constant, during a large amount of production, the spring constant that keeps each spring as desire in narrow range, with the opening of valves degree set in stationary value, single time-consuming expensive again, and also non-easy thing in working control, utilizing above in the vaporizer of a dynamic valve assembly, this accurate setting more becomes important, and the necessity that is improved is arranged.

Main purpose of the present utility model is: the variable Venturi's pipe vaporizer that a kind of tool ring controlled power jet assembly is provided, comprise shell, fuel storage tank, throat, fuel draining can be gone into the thin mouth of discharging of throat, and the total fuel channel that fuel is conducted to thin mouth from the fuel storage tank, comprise the power injection assembly again, contain the power injection fuel chambers, there is port between the indoor storage tank of burner oil, to communicate for fluid, pipeline mechanism conducts to thin mouthful with fuel self-injection fuel chambers, simultaneously, injection valve control fuel enters the burner oil chamber from the storage tank passage of flowing through, power injection controlling rod with the dynamic valve connection, control the former and resist the motion of actuating valve towards the bias mechanism of closing position, choke dynamic ring with controlling rod contact surface, can adapt to interior degree of vacuum variation of engine air admittance manifold and rotation freely, when degree of vacuum is reduced to prearranging quatity, can cause controlling rod to open injection valve.

Of the present utility model time a purpose is: utilize the choke dynamic ring to rotate with the valve that turns on the power, its opening point is only decided on the time point that causes ring to rotate, the strength that is produced when the engine vacuum that puts on the outer membrane assembly, overcome bias mechanism and add the biasing force time point that puts on barrier film, ring promptly begins to rotate, the biasing force of membrane valve is during greater than the dynamic valve biasing force, and promptly the may command dynamic valve is opened, and the bias mechanism in most and the vaporizer is irrelevant.

A purpose more of the present utility model is: provide one to comprise the carefully vaporizer of mouth of ring-type discharging, fuel can be entered week along in the throat that surrounds, the gauge line that majority separates extracts fuel from the fuel storage tank, and the thin mouth of guiding ring-type has the power injection assembly that majority separates, adopt the choke dynamic ring can guarantee that each dynamic valve and other each dynamic valves open simultaneously, unlatching as each dynamic valve, be to decide on the time point that the strength that air-distributor vacuum on the valve causes overcomes indivedual bias mechanisms of each valve, then situation is just different.

Another purpose of the present utility model is: make the sliding type rotation in the enclosure of choke dynamic ring freely, and has a controlling rod contact surface, but adapting to choke dynamic ring ring from the enable possition in the de-rotation to closing position, controlling rod is driven towards a direction, makes relevant injection valve move to closing position from the enable possition.

The technical solution of the utility model:

A kind of variable Venturi's pipe vaporizer of tool ring controlled power jet assembly, it is characterized in that: it comprises

Shell has fuel storage tank, throat, fuel is entered thin mouthful of the discharging that this throat uses, and with fuel from this fuel storage tank reach this total fuel channel of thin mouthful and

The power injection assembly is positioned at this shell, and it contains

(1) can be for the power injection fuel chambers that is fluid communication between this fuel storage tank and this burner oil chamber with through hole,

(2) fuel can be reached this pipeline mechanism of thin mouthful from this burner oil chamber,

(3) may command fuel flows into the injection valve of this burner oil chamber from this fuel storage tank by this through hole,

(4) the power injection controlling rod of controlling this injection valve is linked in this injection valve,

(5) this injection valve can be driven bias mechanism to closing position,

(6) reduce to prearranging quatity in this degree of vacuum and can cause this controlling rod to open the choke dynamic ring of this injection valve when following, it has the controlling rod contact surface, and degree of vacuum changes and rotates freely in the corresponding engine air admittance manifold,

(7) in the time of can reducing to prearranging quatity according to engine air admittance mainfold vacuum degree, rotate the rotating mechanism of this choke dynamic ring.

The variable Venturi's pipe vaporizer of described tool ring controlled power jet assembly is characterized in that: what be provided with in the enclosure that majority separates can draw fuel and gauge line and most power injection assembly that separates of thin mouthful of this ring-type discharging of leading from this fuel storage tank.

The variable Venturi's pipe vaporizer of described tool ring controlled power jet assembly, it is characterized in that: this choke dynamic ring is reversible when turning to closing position from the enable possition at this choke dynamic ring, injection valve can be positioned at this shell freely from opening the sliding type rotation that is urged to closing position, and has the controlling rod contact surface.

The variable Venturi's pipe vaporizer of described tool ring controlled power jet assembly is characterized in that: passage is contained in this pipeline mechanism, extends between relevant burner oil chamber and corresponding total fuel channel.

The variable Venturi's pipe vaporizer of described tool ring controlled power jet assembly is characterized in that: this bias mechanism is a spring, surrounds an end of controlling rod, and this controlling rod is that to be compressed in this chamber terminal and be attached on indivedual springs of controlling rod between block piece.

The variable Venturi's pipe vaporizer of described tool ring controlled power jet assembly, it is characterized in that: this throat is a variable Venturi's pipe throat, is provided with the cone that can move in this throat with the basal area that changes the annular channel that the space is formed between itself and this throat in this throat.

The variable Venturi's pipe vaporizer of described tool ring controlled power jet assembly, it is characterized in that: this shell has most total fuel channels that fuel can be reached thin mouthful of this ring-type from this storage tank with the interval that radially is separated by, and contain most power injection assemblies, controlling rod is respectively arranged, with the relevant controlling rod contact surface contact on this choke dynamic ring.

The variable Venturi's pipe vaporizer of described tool ring controlled power jet assembly is characterized in that: each total fuel channel is to be fluid communication with the power injection fuel chambers.

Advantage of the present utility model is:

(1) the utility model is provided with the power injection controlling rod that connects with dynamic valve, control injection valve antagonism actuating valve is towards the motion of the bias mechanism of closing position, utilize the choke dynamic ring of tool controlling rod contact surface to rotate with the valve that turns on the power, its opening point is only decided on the time point that causes the choke dynamic ring to rotate, so very convenient in control.

(2) strength that is produced when the engine vacuum that puts on the outer membrane assembly, overcome bias mechanism and add the biasing force time point that puts on barrier film, the choke dynamic ring promptly begins to rotate, the biasing force of membrane valve is during greater than the dynamic valve biasing force, be that the may command dynamic valve is opened, and the bias mechanism in most and the vaporizer is irrelevant, thereby need not to control bias mechanism, has saved time and cost.

(3) this choke dynamic ring can adapt to the degree of vacuum variation in the engine air admittance manifold and rotate freely in the enclosure, when degree of vacuum is reduced to prearranging quatity, cause controlling rod to open injection valve, so can be easily with the opening of valves program control in stationary value, and have the controlling rod contact surface, but encircling from the enable possition in the de-rotation to closing position in adaptation, bar is driven towards a direction, make relevant injection valve move to closing position from the enable possition, very accurate convenience.

(4) idling fuel passage function of the present utility model, because size is littler than the elementary gas throttling valve of traditional type vaporizer, so more see stablely when the adjustment idling, it is also more steady to turn round.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is the structural plan figure of this practical newline type;

Fig. 2 is the sectional view of vaporization shown in Figure 1 along 2-2 lines;

Fig. 3 is the sectional view of vaporization shown in Figure 1 along 3-3 lines;

Embodiment shown in the utility model is arranged on having thin mouthful of ring-type variable Venturi's pipe as in the vaporizer of adjusting the mechanism that fuel flows, but also can be used for the vaporizer of other kinds.

See also Fig. 1, shown in Figure 2, vaporizer comprises shell 10, in median wall portion 20 both sides

fuel storage tank

12,14 is arranged, its inner throat 21 that forms vaporizer, throat's inwall holds thin mouthful 62 stenosis of ring-type in the annular nozzle 58, and latter's gland is gone in the inwall on throat surface, below thin mouthful 62, the diameter of throat's wall is enlarged to the original diameter that equals throat's top surface again, is provided with a Rectifier plate 93 in addition below thin mouthful 62.

Can be along the up and down cone 22 of throat central authorities longitudinal extending axis in conjunction with press-down type fit with nozzle 58, limit annular air inlet openings 26, its sectional area is to be regulated by cone 22 location, open throat's 21 sizes to atmosphere, be by air door 48 controls, air door 48 is that radially pair of pin 50 pivots of opposite location are moving with air door to be installed in throat's wall, being looped around at these shell 10 inboard spaced radials in the wall portion 20 is four gauge lines 36, be contained in the gauge line fuel chambers 38, the function of this gauge line is well-known in conventional art, fuel is the vacuum action of utilizing the venturi-effect of the air flow through thin mouthful 62 to produce in

passage

59 and 60, the pipe that is measured is drawn, gauge line respectively has opening in the lower end, fuel is just flowed through in this suction pipe by fuel chambers 38, the top of each pipe communicates with the air outlet 61 of leading to throat 21, pore in fuel passes through the pipe sidewall, through

passage

59 and 60 go out cause thin mouthful 62 of ring-type before, air promptly mixes mutually with the interior fuel of pipe, fuel flow to gauge line 36 from fuel storage tank 16, by 56 controls of metering spout, latter's control channel sized therebetween.

In median wall 20 both sides radially, it is a pair of power injection assembly 30, be positioned at paired gauge line fuel chambers 38 midway, each power jet comprises a power injection controlling rod 64, be located at sliding freely in the sleeve 65 that is contained in the shell 10, the lower end of controlling rod 64 is with valve 66, be positioned at power injection fuel chambers 68, and control connection fuel storage tank 16 is to the port 69 of burner oil chamber 68, what surround controlling rod below valve 66 is spring 71, between valve 66 and power injection fuel chambers 68 bottoms, compress, enter common closing position with actuating valve.

Passage

70 and 72 shown in Fig. 1 dotted line, with each gauge line fuel chambers 38 and relevant power injection fuel chambers 68 bindings, what be located at power injection controlling rod 64 and gauge line 36 tops sliding freely is choke dynamic ring 34, what be attached to choke dynamic ring 34 is armed lever 46 radially, connect with the barrier film armed lever 40 of conventional membrane assembly 39, barrier film assembly end opposite has tubulose connector 41, utilize the intake manifold (figure on do not show) of tube coupling to engine, the choke dynamic ring has pair of control bar contact surface 35, favour the plane that choke dynamic ring 34 limits, make the latter when rotating, controlling rod 64 can resist the biasing force of spring 71 to pressing down, or the biasing force of allowing spring 71 push lever 64 that makes progress, dynamic ring 34 also contains slotted hole 33, can allow air flows downward pass through air outlet hole 61 to gauge line 36, utilize passage 29 to be bound up on traditional accelerating pump 28 of thin mouthful of ring-type, when gas pedal is depressed into predetermined extent, can allow fuel reach thin mouthful 62 from the fuel storage tank, accelerator pedal also can cause cone 22 by connecting

rod

42,44 and 45 effects move downward.

During engine start, air is broken through throat 21 and thin mouth 62, produce low pressure, fuel self-measuring pipe 36 is sucked venturi throat, in the engine normal running, fuel is not by power injection assembly 30, but work as accelerator pedal, during with quick raising engine speed, the intake manifold vacuum that acts on barrier film assembly 39 reduces, rotate the air door dynamic ring with counterclockwise direction, air door controlling rod contact surface 35 rotates, cause each relevant controlling rod 64 to press down, port 69 is opened, make fuel storage tank 16 and burner oil chamber 68 be fluid communication, when valve 66 presses down antagonism spring 71 biasing forces, fuel promptly enters burner oil chamber 68, thereby fuel self-injection fuel chambers 68 flows to relevant a pair of metering fuel chamber 38 along passage 70 with 72, provide additional fuel by power injection assembly 30, greatly improve the engine capacity, to adapt to the throttling situation that vaporizer leaves greatly, during this period in, the air of breaking through throat heightens, need relative relatively large fuel, so that elder generation and air mixing make the gained mixed gas enter intake manifold again.

And for example shown in Figure 3, corner location is provided with traditional idling fuel passage in vaporizer, 80 is the idling suction port, the 81st, air bleed, the 82nd, the fuel supply pipe of idling fuel passage, the 83rd, with the fuel passage after the air mixing, the 84th, fuel inlet, the 85th, defeated hole, the 86th, idling fuel adjusting screw, the 87th, idling fuel outlet, the 88th, idling fuel passage gas throttling valve, the 89th, the outlet of idling fuel gas, the 90th, the idling gas passageway, this idling fuel passage function is because size is littler than the elementary gas throttling valve of traditional type vaporizer, so more see stablely when adjusting idling, it is also more steady to turn round.

Claims

1. the variable Venturi's pipe vaporizer of a tool ring controlled power jet assembly, it is characterized in that: it comprises

The power injection assembly is positioned at this shell, and it contains

(5) this injection valve can be driven bias mechanism to closing position,

2. the variable Venturi's pipe vaporizer of tool ring controlled power jet assembly according to claim 1 is characterized in that: what be provided with in the enclosure that majority separates can draw fuel and gauge line and most power injection assembly that separates of thin mouthful of this ring-type discharging of leading from this fuel storage tank.

3. the variable Venturi's pipe vaporizer of tool ring controlled power jet assembly according to claim 2, it is characterized in that: this choke dynamic ring is reversible when turning to closing position from the enable possition at this choke dynamic ring, injection valve can be positioned at this shell freely from opening the sliding type rotation that is urged to closing position, and has the controlling rod contact surface.

4. the variable Venturi's pipe vaporizer of tool ring controlled power jet assembly according to claim 3 is characterized in that: passage is contained in this pipeline mechanism, extends between relevant burner oil chamber and corresponding total fuel channel.

5. the variable Venturi's pipe vaporizer of tool ring controlled power jet assembly according to claim 3, it is characterized in that: this bias mechanism is a spring, surround an end of controlling rod, this controlling rod is that to be compressed in this chamber terminal and be attached on indivedual springs of controlling rod between block piece.

6. the variable Venturi's pipe vaporizer of tool ring controlled power jet assembly according to claim 1, it is characterized in that: this throat is a variable Venturi's pipe throat, is provided with the cone that can move in this throat with the basal area that changes the annular channel that the space is formed between itself and this throat in this throat.

7. the variable Venturi's pipe vaporizer of tool ring controlled power jet assembly according to claim 6, it is characterized in that: this shell has most total fuel channels that fuel can be reached thin mouthful of this ring-type from this storage tank with the interval that radially is separated by, and contain most power injection assemblies, controlling rod is respectively arranged, with the relevant controlling rod contact surface contact on this choke dynamic ring.

8. the variable Venturi's pipe vaporizer of tool ring controlled power jet assembly according to claim 7 is characterized in that: each total fuel channel is to be fluid communication with the power injection fuel chambers.