JPH01152054U

JPH01152054U -

Info

Publication number: JPH01152054U
Application number: JP4936988U
Authority: JP
Priority date: 1988-04-14
Filing date: 1988-04-14
Publication date: 1989-10-19

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２図は本考案に係わる気化器の基
準液面室の油面制御装置の一実施例を示す断面図
、第３図は本考案における燃料流量と基準液面室
内の油面の高さの関係を示すグラフ、第４図は従
来の気化器の基準液面室の油面制御装置の一実施
例を示す断面図、第５図は従来の燃料流量と基準
液面室内の油面の高さの関係を示すグラフである
。１０……基準液面室、１２……吸気通路、１４
……スロツトルバルブ、１６……燃料通路、１８
……流量制御弁、２０……吸気負圧導入通路、２
２……背圧室、２６……ダイアフラム、２８……
弁体、３０……ばね、３２……エアベント、３４
……液面制御弁、３６……背圧室、３７……燃料
タンク、３８……燃料通路、４２……ダイアフラ
ム、４４……弁体、４６……ばね、５０……負圧
導入通路、５２……絞り、５４……絞り、５６…
…大気通路、５８……吸気負圧導入通路。 1 and 2 are cross-sectional views showing an embodiment of the oil level control device in the reference liquid level chamber of a carburetor according to the present invention, and FIG. 3 is a sectional view showing the fuel flow rate and oil level in the reference liquid level chamber in the present invention. 4 is a cross-sectional view showing an example of an oil level control device in the standard liquid level chamber of a conventional carburetor, and FIG. 5 is a graph showing the relationship between the conventional fuel flow rate and the standard liquid level chamber. It is a graph showing the relationship between the height of the oil level. 10...Reference liquid level chamber, 12...Intake passage, 14
... Throttle valve, 16 ... Fuel passage, 18
...Flow control valve, 20...Intake negative pressure introduction passage, 2
2...back pressure chamber, 26...diaphragm, 28...
Valve body, 30... Spring, 32... Air vent, 34
... Liquid level control valve, 36 ... Back pressure chamber, 37 ... Fuel tank, 38 ... Fuel passage, 42 ... Diaphragm, 44 ... Valve body, 46 ... Spring, 50 ... Negative pressure introduction passage, 52...Aperture, 54...Aperture, 56...
...Atmospheric passage, 58...Intake negative pressure introduction passage.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

基準液面室の油面下と吸気通路のスロツトルバ
ルブ位置とを連通し、吸気通路負圧に応じて基準
液面室から吸気通路への燃料流量を調節する流量
制御弁と、前記基準液面室の油面下と燃料タンク
とを連絡し、弁体を作動させる背圧室の圧力と前
記油面の高さとに応じて弁体を作動させ、基準液
面室に燃料タンクから燃料を供給する液面制御弁
とを備えた気化器のフロート室の油面制御装置に
おいて、前記液面制御弁の背圧室に、大気通路を
介して大気を導入すると共に、吸気通路のスロツ
トルバルブ位置より上流からの吸気負圧通路を介
して吸気負圧を導入し、それら大気通路と吸気負
圧通路とのそれぞれに絞りを備えたことを特徴と
する気化器のフロート室の油面制御装置。 a flow control valve that communicates between the oil level in the reference liquid level chamber and a throttle valve position in the intake passage and adjusts the fuel flow rate from the reference liquid level chamber to the intake passage in accordance with the intake passage negative pressure; and the reference liquid. The valve body is connected between the oil level below the surface chamber and the fuel tank, and the valve body is operated according to the pressure in the back pressure chamber that operates the valve body and the height of the oil level, and fuel is supplied from the fuel tank to the reference liquid level chamber. In an oil level control device for a float chamber of a carburetor, which is equipped with a liquid level control valve for supplying air, atmospheric air is introduced into the back pressure chamber of the liquid level control valve through an atmospheric passage, and a throttle valve in the intake passage is provided. An oil level control device for a float chamber of a carburetor, characterized in that intake negative pressure is introduced through an intake negative pressure passage from upstream of the position, and each of the atmospheric passage and the intake negative pressure passage is provided with a restriction. .