CN205477976U

CN205477976U - Carburetor with adjustable main hole flow that measures

Info

Publication number: CN205477976U
Application number: CN201620284446.6U
Authority: CN
Inventors: 杨勇
Original assignee: Chongqing Saipu Electrical Co ltd
Current assignee: Chongqing Saipu Electrical Co ltd
Priority date: 2016-04-07
Filing date: 2016-04-07
Publication date: 2016-08-17
Anticipated expiration: 2026-04-07

Abstract

The utility model discloses a carburetor with adjustable main hole flow that measures, be used for carrying out the fuel -flow control valve adjusted to the oil mass size of crossing of main metering orifice including the main metering orifice that is used for vacuum oil absorption oil feed with main metering orifice cooperation, it is different with the mixing ratio demand of air to the fuel to be based on normal elevation and plateau, adjusts the oil inlet amount of main metering orifice to making the higher oil inlet amount that reduces when air there is thin of height above sea level, and guaranteeing normal oil inlet amount when using in that ordinary height above sea level is regional, thereby be applicable to multiple operating mode, it is whole need not change the carburetor according to areas of use's difference, practices thrift the cost, even use in height above sea level to change not large area, also can adjust according to the operating mode of engine to guarantee that air and fuel all can have the mixing ratio of preferred at any time, in order to guarantee engine operating power, reducing fuel consumption.

Description

Main jet adjustable-flow carburetor

Technical field

This utility model relates to electromotor associated components field, particularly to a kind of main jet adjustable-flow carburetion Device.

Background technology

Carburetor is under the vacuum action that electromotor work produces, and is mixed with air by a certain proportion of gasoline Machinery.Which control the air-fuel ratio of each operating point of electromotor, the quality of its service behaviour will have a strong impact on The exhaust emissions of vehicle, and then affect the performance of car load.The operation principle of existing carburetor is, carburetor The machine oil of float chamber enters jet pipe toward oil spout in trunnion so that being mixed to form certain ratio with air by main jet Example, but the different operating modes of electromotor decide air can be different with the mixing ratio of fuel oil, and all ofization Oil device is all to work under the ultimate principle of atmospheric pressure, in different height above sea levels to the requirement of carburetor also It is different, because the thin anoxia in height above sea level upper zone air relative elevation lower region, if would be used for general The common carburetor in logical Plain is for High aititude region, and owing to air enters less, and oil mass flow is constant, phase For air, oil mass becomes many, then air and oil mass can not reach preferably mixing ratio, the power of electromotor It is affected, locomotive occurs without force phenomenon, and fuel oil expends big, clutch of even wearing and tearing time serious.

Accordingly, it would be desirable to existing carburetor is improved so that it is can be according to different applying working conditions and region pair The flow of main jet is adjusted, it is ensured that machine oil can keep preferably mixing from air under different service conditions Ratio.

Utility model content

In view of this, this utility model provides a kind of metering-orifice adjustable-flow carburetor, and it can make according to different With operating mode and region, the flow of main jet is adjusted, it is ensured that machine oil can be under different service conditions from air Keep preferably mixed proportion.

Main jet adjustable-flow carburetor of the present utility model, including for vacuum oil suction oil-feed main jet and Coordinate with main jet for main jet being crossed the director valve that oil mass size is adjusted.

Further, director valve includes aciculiform spool and the valve being fixedly installed on the float chamber cover of carburetor Seat, it is interior for moving axially to change the oil channel of main jet that aciculiform spool stretches into main jet through valve seat front end Cross-sectional sizes.

Further, the body of carburetor extends formation for installing the spray bar of carburetor bottom float chamber cover Ring set body, main jet is arranged on ring set body sidewall.

Further, the sidewall of float chamber cover being formed with valve seat erecting bed, valve seat is ledge structure, and valve seat is installed The valve seat installing hole with valve seat construction conformal it is provided with on platform.

Further, the sealing ring for sealing it is provided with outside valve seat inner segment.

Further, director valve also includes being arranged on outside float chamber cover for driving needle valve core to move axially Driving handle.

Further, driving handle is fixing with aciculiform spool outer end to be connected, and driving handle is threadeded with described valve seat.

Further, float chamber cover is provided with the left location for limiting driving handle left-right rotation regulated quantity Post and right locating dowel.

Further, carburetor also includes trip bolt, trip bolt through bottom float chamber cover with ring set body screw thread Connect.

Further, portion's correspondence main jet installation site formation between spray bar and trip bolt in ring set body For the transition grease chamber of machine oil can be accumulated.

The beneficial effects of the utility model: metering-orifice adjustable-flow carburetor of the present utility model, can be according to normally Height above sea level is different from the mixing ratio demand of air to fuel oil with plateau, is adjusted the oil inlet quantity of main jet, So that reducing oil inlet quantity when height above sea level higher air is thin, and ensure normal oil-feed when using in common height above sea level region Amount, thus it is applicable to various working, it is not necessary to it is replaced carburetor according to the difference using region overall, joint About cost；Even if being used in the little region of altitude change, it is possible to be adjusted according to the operating mode of electromotor, to protect Card air and fuel oil the most all can have preferably mixing ratio, to ensure electromotor operating power, reduce oil consumption.

Accompanying drawing explanation

With embodiment, this utility model is further described below in conjunction with the accompanying drawings.

Fig. 1 is this utility model structural representation.

Detailed description of the invention

Fig. 1 is this utility model structural representation, as shown in the figure: the main jet adjustable-flow of the present embodiment Oil device, including the main jet 1 for vacuum oil suction oil-feed and coordinates for the mistake to main jet 1 with main jet 1 The director valve that oil mass size is adjusted；When being used in different height above sea levels, pass through director valve The mistake oil mass size of main jet 1 is adjusted, and then reaches to regulate the how many purpose of distributive value, make oil spout with Air reaches preferably mixing ratio, to ensure the operating power of electromotor.

In the present embodiment, director valve includes aciculiform spool 2 and is fixedly installed on the float chamber cover 3 of carburetor On valve seat 4, aciculiform spool 2 is main for moving axially change in stretching into main jet 1 through valve seat 4 front end The oil channel cross-sectional sizes of metering-orifice 1；The body 5 of carburetor extends formation bottom float chamber cover 3 and is used for installing The ring set body 7 of the spray bar 6 of carburetor, main jet 1 is arranged on ring set body 7 sidewall；Wherein, main jet Oil channel in 1 is Venturi tube structure, and the sidewall of ring set body 7 is provided with main jet installing hole, main jet 1 Being fixed in main jet installing hole, valve seat 4 is fixedly installed on the sidewall of float chamber cover 3, aciculiform spool 2 Most advanced and sophisticated from float chamber cover 3 sidewall through inserting in main jet 1, compared to existing by needle-valve above body 5 Insert the mode that jet pipe is adjusted, compact conformation, take up room less, and easy to adjust；It addition, main amount Hole 1 is being radially arranged along ring set body 7, and certainly, according to actual installation demand, main jet 1 also can be with ring set The mode that the axis of body 7 forms an angle is arranged, when main jet 1 tilts to become a clamp with the axis of ring set body 7 During angle, the same adaptation also tiltable of aciculiform spool 2 is arranged.

In the present embodiment, the sidewall of float chamber cover 3 being formed with valve seat erecting bed 8, valve seat 4 is ledge structure, It is provided with on valve seat erecting bed 8 and the valve seat installing hole of valve seat 4 structure conformal；Valve seat erecting bed 8 is float Structure thicker on the sidewall of chamber cap 3 is formed, and can form more stable fixing, and valve seat installing hole is stepped hole, There is certain guiding and positioning action.

In the present embodiment, outside valve seat 4 inner segment, it is provided with the sealing ring 9 for sealing；On the inner segment of valve seat 4 Offering sealing ring 9 mounting groove, sealing ring 9 is installed in sealing ring 9 mounting groove, at valve seat 4 and valve Formed between seat installing hole and seal.

In the present embodiment, director valve also includes being arranged on outside float chamber cover 3 for driving aciculiform spool 2 The driving handle 10 moved axially；Driving handle 10 is fixing with aciculiform spool 2 outer end to be connected, driving handle 10 Threaded with described valve seat 4；By rotating driving handle 10, aciculiform spool 2 can be ordered about relative to valve seat 4 Move axially, be Venturi tube structure owing to main jet 1 is internal, when aciculiform spool 2 is in the mistake within main jet 1 The purpose of regulation oil channel cross-sectional sizes is can reach when moving forward and backward at the collar extension at the Venturi tube structure of oil duct.

In the present embodiment, float chamber cover 3 is provided with for limiting driving handle 10 left-right rotation regulated quantity The left locating dowel of system and right locating dowel 11；For the regulated quantity of driving handle 10 is limited, also protect simultaneously Card driving handle 10 will not be rejected.

In the present embodiment, carburetor also includes trip bolt 12, trip bolt through bottom float chamber cover 3 with Ring set body 7 is threaded；Trip bolt for being connected fastening, trip bolt by carburetor body with float chamber cover Passing float chamber cover 3 from bottom and add sealing gasket 14 in contact position, ring set body 7 is stretched in trip bolt upper end In and threaded with ring set body 7.

In the present embodiment, internal corresponding main jet 1 installation site of ring set body 7 is also positioned at spray bar 6 and fastening spiral shell The transition grease chamber 13 for machine oil can be accumulated is formed between nail；Transition grease chamber can with accumulator portion machine oil so that Must when carrying out vacuum oil suction, can quick fuel feeding, be quick on the draw.

Finally illustrate, above example only in order to the technical solution of the utility model to be described and unrestricted, Although being described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the art should Work as understanding, the technical solution of the utility model can be modified or equivalent, without deviating from this reality By objective and the scope of new technique scheme, it all should be contained in the middle of right of the present utility model.

Claims

1. a main jet adjustable-flow carburetor, it is characterised in that: include the master for vacuum oil suction oil-feed Metering-orifice and coordinating with main jet for main jet being crossed the director valve that oil mass size is adjusted.

Main jet adjustable-flow carburetor the most according to claim 1, it is characterised in that: described oil mass Regulation valve includes aciculiform spool and the valve seat being fixedly installed on the float chamber cover of described carburetor, and aciculiform spool is worn Cross valve seat and front end is stretched in described main jet for moving axially to change the oil channel cross-sectional sizes of main jet.

Main jet adjustable-flow carburetor the most according to claim 2, it is characterised in that: described carburetion The body of device extends the ring set body forming the spray bar for installing carburetor, described main amount bottom float chamber cover Hole is arranged on described ring set body sidewall.

Main jet adjustable-flow carburetor the most according to claim 3, it is characterised in that: described float Being formed with valve seat erecting bed on the sidewall of chamber cap, described valve seat is ledge structure, valve seat erecting bed is provided with The valve seat installing hole of valve seat construction conformal.

Main jet adjustable-flow carburetor the most according to claim 4, it is characterised in that: valve seat inner segment Outside is provided with the sealing ring for sealing.

6. according to the main jet adjustable-flow carburetor described in claim 2-5 any claim, its feature It is: described director valve also includes being arranged on outside float chamber cover for driving needle valve core to move axially Driving handle.

Main jet adjustable-flow carburetor the most according to claim 6, it is characterised in that: described driving Handle is fixing with aciculiform spool outer end to be connected, and described driving handle is threadeded with described valve seat.

Main jet adjustable-flow carburetor the most according to claim 6, it is characterised in that: described float Chamber cap is provided with the left locating dowel for limiting driving handle left-right rotation regulated quantity and right locating dowel.

9. according to the main jet adjustable-flow carburetor described in claim 2-5 any claim, its feature Being: described carburetor also includes trip bolt, described trip bolt passes bottom described float chamber cover with described Ring set body is threaded.

Main jet adjustable-flow carburetor the most according to claim 9, it is characterised in that: described ring The internal corresponding main jet installation site of body is also formed for accumulating machine between spray bar and trip bolt The transition grease chamber of oil.