CN2133679Y - Carburetor top-body with sealed choke door - Google Patents

Abstract

The utility model belongs to a carburetor top-body matched with a single cavity typed carburetor. The carburetor top-body employs a sealed choke door, namely, has a sealing ring installed between the choke door axis and the axial hole, and no air holes are arranged on the choke door slice. The choke door can not only adjust the mixed proportion of the oil gas that enters to a cylinder, but also seal up the ultra-rich mixture which is sprayed under the state of heat engine to the cylinder and air intake branches, etc., making the concentration of the mixed gas be kept in the required range of the engine ignition in reasonable time, so that the ignition can be rapidly started in low temperature environment and emergent state, and the deficiencies are overcome, such as single usage of the original choke door and the incapability of being started at low temperature, etc.

Description

Carburetor top-body with sealed choke door

The utility model belongs to a kind of gasoline car upper body, and particularly a kind of upper body with the sealed type chock plate is fit to and the supporting use of single-chamber type Carburetor.

The upper body that generally is used at present gasoline car generally all is direct and air-strainer joins, and regulates the ratio that air mixes with gasoline by the chock plate that is positioned at inner chamber.Chock plate makes it be in normally open by spring down in working order; The aperture of then regulating chock plate by the pull bar that is positioned at operator cabin when starting cold or engine power decline with the inlet of control air, increases the concentration of mixed gas, guarantees that cold car starts or increase the power of motor smoothly in running.For this purpose, chock plate in the tradition upper body and Air strangler spindle all adopt freely with its inwall and housing and cooperate, and in order to prevent that chock plate from extremely being caused stopping working by the pass under operate miss or fortuitous event, also offer a vent on the sheet, to guarantee the motor required air inflow at least that is in operation at the door of chock plate.Chock plate in the upper body of this class formation can only play the effect of regulating air inflow, and can not seal up for safekeeping in cylinder etc. entering mixed gas in the cylinder, uses during in order to the next time starting.Therefore, exist the defective that can not realize motor rapid ignition start under the cryogenic conditions and the state of emergency by this upper body.

The purpose of this utility model is on the basis of single-chamber type upper body existing structure, change chock plate structure and with the connecting and fit system of housing, so that it not only can regulate the size of air inlet amount, and behind the engine misses also can in order to the input mixed gas seal up for safekeeping in cylinder, reach afterwards and start in the quite a while, particularly the purpose of rapid ignition start under the low temperature and the state of emergency.

Solution of the present utility model is between the axis hole on Air strangler spindle and the upper body middle shell seal ring to be set.Choke every sheet then adopts the sealed type door sheet of not offering pore; Along the axial direction of upper body 3～5 degree inclination angles are arranged all at door sheet and axisymmetric two arc surfaces of chock plate, two inclination directions are opposite; Adopt movingly to guarantee its sealing between door sheet and the upper body inwall.This upper body is when engine behavior, as conventional upper body, use, but, only need on the relevant position of pull bar, to be provided with the minimum aperture that a limiting stopper (part) guarantees chock plate and get final product in order to prevent that reliably misoperation etc. from closing air door dead and cause stopping working.If under low temperature environment, work, for can be at any time rapidly, reliably with engine start, just gasoline is sprayed in the cylinder during hot machine state after each flame-out, make it form super rich mixture, and then chock plate is closed extremely (promptly not being subjected to the restriction of limiting stopper at this moment), should seal up for safekeeping in carburetter connector by super dense mixed steam, lower body, in air intake branch and the cylinder, next time is when starting, because existing rich mixture exists in the cylinder, therefore only need the sparking can be immediately with engine start.

The utility model is owing to adopt the sealed type chock plate in upper body, therefore not only can regulate the mixture strength that enters cylinder by this chock plate, but also can will seal up for safekeeping at the super rich mixture that sprays into cylinder under the hot machine state in cylinder etc., thereby guarantee in the quite a while after this---short then 3～5 days, long then more than the week, even reach under-40 ℃ the low-temperature condition piston one compression low, but motor just ignition start in 1 second, and have conveniently, characteristics such as reliable.Thereby overcome the regular price gasoline car in severe cold area cold post-start and army, public security, fire-fighting, rescue and breakdown lorry emergency starting difficulty, driver's labor intensity is big; And adopt warm-up the engines such as hot water, blowtorch to have power consumption, disadvantage such as time-consuming.Therefore the utlity model has simple in structure, easy to use, reliable, starting rapidly.Be particularly suitable under low temperature environment fast, advantage such as emergency starting.

Accompanying drawing and description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: 1 is upper body, 2. float type chamber balance tube, 3, choke every sheet, 4, Air strangler spindle, 5, seal ring, 6, screw, 7, intake duct, 8, the oil-feed screw hole.

Embodiment

With with the matching used upper body of 231 type Carburetors be example: structures such as the housing of upper body 1, inner chamber and float chamber balance tube, size and material all with original structure with; Choke every sheet 3, on do not establish vent, only keep two screws that connect with Air strangler spindle, the nominal diameter of door sheet is φ 50mm, thick 1mm, be processed into 3～5 degree inclination angles with axisymmetric two the circular arc anchor rings of chock plate along the upper body axial direction, the true dip direction at two cambered surface inclination angles is opposite, do polishing treatment after the arc surface processing, to guarantee two anchor rings and upper body inwall sealing under condition movingly to mixed gas, Air strangler spindle 4, diameter of axle φ 8mm is respectively offering the seal groove of two φ 5 * 3mm with the axis hole cooperation place; Present embodiment adopts seal with O ring, and specification is φ 5 * 1.8, and choke every sheet 3 still adopts screw 6 and Air strangler spindle 4 to be fastenedly connected, and is motive sealing between Air strangler spindle and the axis hole.Whole upper body in use, top is connected with air-strainer.The bottom is connected with carburetter connector.And Air strangler spindle still is connected with the choke door frame by bolt, spring etc., and by the control of the choke linkage in the operator cabin.

Claims (1)

1, a kind of upper body with the sealed type chock plate, comprise housing, intake duct, chock plate external member, the float chamber balance tube, the oil-feed screw hole, it is characterized in that being provided with seal ring between Air strangler spindle on the chock plate external member and the axis hole on the housing, choke every sheet then adopts the sealed type door sheet of not offering pore, along the axial direction of upper body 3～5 degree inclination angles are arranged all at door sheet and axisymmetric two arc surfaces of chock plate, and two inclination directions is opposite; Adopt screw to be fastenedly connected between choke every sheet and the door-hinge, be motive sealing between door-hinge and the axis hole.

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