JPS632854U

JPS632854U -

Info

Publication number: JPS632854U
Application number: JP9601486U
Authority: JP
Priority date: 1986-06-25
Filing date: 1986-06-25
Publication date: 1988-01-09

Description

[Brief explanation of the drawing]

第１図は本考案の定負圧式気化器の実施例の縦
断面図、第２図及び第３図は変形例を示す部分断
面図、第４図はハンガの形状を示す図で、ａ図は
側面図、ｂ図は平面図、第５図は従来実施されて
いる典型的な定負圧式気化器の縦断面図、第６図
は摺動弁（負圧ピストン）の開弁力を補なうため
スプリングを使用した実公昭３９―２０４１３号
開示の構成の縦断面図である。符号の説明、１……筐体、２……主吸気通路、
３……絞り弁、４……摺動弁（負圧ピストン）、
５……可変ベンチユリ、６……ダイアフラム、６
―１，６―２……ダイアフラム・プレート、７…
…負圧室カバー、８……負圧室、９……大気圧室
、１０，１１……透孔、１２……スプリング、１
３……計量ニードル、１４……燃料ノズル、１５
……浮子室、１６……壁体部材、１６ａ……シー
ル部材、１６ｂ……板部材、１７……中空ロツド
、１８……ハンガ。 Fig. 1 is a longitudinal sectional view of an embodiment of the constant negative pressure type vaporizer of the present invention, Figs. 2 and 3 are partial sectional views showing modified examples, Fig. 4 is a view showing the shape of the hanger, and Fig. a is a diagram showing the shape of the hanger. Figure 5 is a vertical cross-sectional view of a typical constant negative pressure type carburetor that has been implemented in the past, and Figure 6 is a side view, Figure b is a plan view, Figure 6 is a vertical cross-sectional view of a typical constant negative pressure type carburetor used in the past, and Figure 6 is a diagram showing a structure in which the opening force of a sliding valve (negative pressure piston) is supplemented. FIG. 3 is a longitudinal cross-sectional view of the configuration disclosed in Japanese Utility Model Publication No. 39-20413, which uses a loading spring. Explanation of symbols, 1... Housing, 2... Main intake passage,
3... Throttle valve, 4... Sliding valve (negative pressure piston),
5...Variable bench lily, 6...Diaphragm, 6
-1,6-2...Diaphragm plate, 7...
...Negative pressure chamber cover, 8...Negative pressure chamber, 9...Atmospheric pressure chamber, 10, 11...Through hole, 12...Spring, 1
3... Metering needle, 14... Fuel nozzle, 15
... Float chamber, 16 ... Wall member, 16a ... Seal member, 16b ... Plate member, 17 ... Hollow rod, 18 ... Hanger.

Claims

[Scope of utility model registration request]

Upstream of the throttle valve 3 that controls the flow rate of air flowing through the main intake passage 2 of the carburetor, there is a sliding valve (negative pressure piston) 4 that intersects the main intake passage 2 and moves forward and backward to form a variable bench lily 5. A diaphragm 6 that partitions a negative pressure chamber 8 into which the negative pressure generated in the variable bench lily 5 is introduced and an atmospheric pressure chamber 9 into which atmospheric pressure is introduced is configured to reduce the pressure difference acting on both sides of the diaphragm 6. The slide valve (negative pressure piston) 4 is moved forward and backward by responding to In the negative pressure type carburetor, a wall is formed at the end of the guide passage of the slide valve (negative pressure piston) 4 opposite to the main intake passage 2, and a hollow rod is slidably penetrated through the wall. 17
One end is fixed to the diaphragm 6 through a diaphragm 6 that partitions the atmospheric pressure chamber 9 and the negative pressure chamber 8, and the other end is connected to the slide valve (negative pressure piston) 4. Constant negative pressure vaporizer.