JPH02141658U

JPH02141658U -

Info

Publication number: JPH02141658U
Application number: JP5057189U
Authority: JP
Priority date: 1989-04-28
Filing date: 1989-04-28
Publication date: 1990-11-29

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す要部拡大断面
、第２図は従来の可変ベンチユリ型気化器の断面
図、第３図は第２図の要部拡大断面図である。１２……吸気通路、１６……フロート室、１７
……サクシヨンピストン、１８……ベンチユリ部
、２７……計量ニードル、２８……燃料通路、２
９……メインノズル、３０……メインエアブリー
ド通路、３１……パワーエアブリード通路、３４
……ピストン室、３９……負圧導入路、４０……
スプリング、４３……バキユームピストン、４３
ａ……バキユーム室、４３ｄ……底面開口、４５
……Ｏリング。 FIG. 1 is an enlarged sectional view of a main part showing an embodiment of the present invention, FIG. 2 is a sectional view of a conventional variable bench lily type carburetor, and FIG. 3 is an enlarged sectional view of the main part of FIG. 12...Intake passage, 16...Float chamber, 17
... Suction piston, 18 ... Bench lily section, 27 ... Metering needle, 28 ... Fuel passage, 2
9...Main nozzle, 30...Main air bleed passage, 31...Power air bleed passage, 34
... Piston chamber, 39 ... Negative pressure introduction path, 40 ...
Spring, 43... Vacuum piston, 43
a... Vacuum chamber, 43d... Bottom opening, 45
...O-ring.

Claims

[Scope of utility model registration request]

A space formed between a main nozzle that opens into the bench lily section, which is disposed in a fuel passage that communicates the float chamber and the bench lily section, and a metering needle that is attached to the tip of the suction piston and penetrates the main nozzle. 〓 and a main air bleed passage and a power air bleed passage communicating with the atmospheric chamber,
A vacuum piston that opens and closes the power air bleed passage, which has a vacuum chamber that communicates with the intake passage downstream of the throttle valve via a negative pressure introduction passage, and is slidably fitted into the piston chamber; In the variable bench lily type carburetor, the variable bench lily type carburetor is provided with a spring that biases the power air bleed passage in a direction to close the power air bleed passage, and opens both the air bleed passages when the load is low and closes the power air bleed passage when the load is high. The chamber and the negative pressure introduction path are communicated through an opening formed on the bottom surface of the vacuum chamber, and a sealing member surrounding the opening is provided on the bottom surface of the vacuum piston or the bottom surface of the cylinder chamber. Variable bench lily type vaporizer.