JPS61190456U

JPS61190456U -

Info

Publication number: JPS61190456U
Application number: JP7427185U
Authority: JP
Priority date: 1985-05-21
Filing date: 1985-05-21
Publication date: 1986-11-27

Description

[Brief explanation of the drawing]

第１図はこの考案の膜式気化器の好ましい実施
態様を説明するために要部を断面で示した略図で
、第２図は従来のこの種の膜式気化器を示す第１
図に該当する略図。第３図はこの考案の燃料室と
主燃料通路を連絡する燃料排出通路に設けた弁装
置が閉塞状態にされた場合を示す部分断面図であ
る。図における主な参照数字は次の通りである。１
０……膜式気化器、１２……本体、１４……調圧
部、１６……ダイアフラム、１８……大気圧室、
２０……燃料室、２６……燃料タンク、２８……
燃料導入通路、３４……プライミングポンプ、３
６……負圧通路、３８……オーバーフロー弁、４
０……主燃料通路、４６……噴射ノズル、４８…
…ベンチユリ部、５０……燃料排出通路、５２…
…弁装置、５４……弁体、５６……弁棒、５８…
…コイルばね、７０……従来のこの種の膜式気化
器の燃料排出口、７２……燃料排出口７０に設け
た逆止弁。 Fig. 1 is a schematic cross-sectional view of the main parts for explaining a preferred embodiment of the membrane type vaporizer of this invention, and Fig. 2 is a schematic diagram showing a conventional membrane type vaporizer of this type.
Schematic representation applicable to the figure. FIG. 3 is a partial sectional view showing a case where the valve device provided in the fuel discharge passage communicating the fuel chamber and the main fuel passage of this invention is in a closed state. The main reference numbers in the figures are as follows. 1
0... Membrane vaporizer, 12... Main body, 14... Pressure regulating section, 16... Diaphragm, 18... Atmospheric pressure chamber,
20...Fuel chamber, 26...Fuel tank, 28...
Fuel introduction passage, 34...Priming pump, 3
6... Negative pressure passage, 38... Overflow valve, 4
0...Main fuel passage, 46...Injection nozzle, 48...
... Bench lily part, 50 ... Fuel discharge passage, 52 ...
... Valve device, 54 ... Valve body, 56 ... Valve stem, 58 ...
. . . Coil spring, 70 . . . Fuel discharge port of a conventional membrane type carburetor of this type, 72 . . . Check valve provided at the fuel discharge port 70.

Claims

[Scope of Claim for Utility Model Registration] A pressure regulating section divided by a diaphragm into a fuel chamber to which fuel can be supplied from a fuel tank and an atmospheric pressure chamber communicating with the atmosphere, and a pressure regulating section for making the fuel chamber negative pressure. A membrane type carburetor comprising a priming pump and a main fuel passage for supplying fuel from the fuel chamber to the bench lily part, wherein a valve device is provided in the fuel discharge passage communicating the fuel chamber and the main fuel passage, A membrane type carburetor, characterized in that the valve device is opened when the engine is operating, and forcibly closed by operating from the outside when the priming pump is operating.