JPS6087361U

JPS6087361U - Internal combustion engine fuel supply stop device

Info

Publication number: JPS6087361U
Application number: JP17976383U
Authority: JP
Inventors: 岩下　調
Original assignee: 本田技研工業株式会社
Priority date: 1983-11-21
Filing date: 1983-11-21
Publication date: 1985-06-15

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は本考案を適用し
た内燃エンジンを搭載した自動二輪車の要部側面図、第
２図は実施例の縦断面構成図、第３図はエアクリーナケ
ースに配設された電磁切換弁の一部切欠き平面図、第４
図はキャブレタの側面図、第５図は点火回路を遮断する
と共にスロットルバルブを開じた時の作動を示す縦断面
図、第６図は点火回路を遮断すると共にスロットルバル
ブを全開にした時の作動を示す縦断面図、第７図は４シ
リンダ４ギヤブレタエンジンに適用した本考案装置の配
管の一実施例を示す構成図である。２・・・エンジン、５・・・エアクリーナ、５ｄ・・・
第２室（クリーンサイド）、１０・・・キャブレタ、１
１ａ・・・ベンチュリ部、１２・・・フロート室、１２
ａ・・・大気リークジェット、１３ａ・・・ピストン負
圧室、１３ｄ・・・空気通路、１４・・・スロットルバ
ルブ、１７・・・第１の負圧通路、１８・・・第２の負
圧通路、１　′９・・・第３の負圧通路、２０・・・電
磁切換弁、２０ｇ・・・大気通路、２１・・・メインス
イヅチ、２２・・・キルスイッチ、２３・・・電源。／／７一＝づ一２７旧一、Ｌｚ　（）　　’ｓ２６　　ｌ″ｇ２６ｃ２６ＧThe drawings show an embodiment of the present invention; Fig. 1 is a side view of the main parts of a motorcycle equipped with an internal combustion engine to which the invention is applied; Fig. 2 is a vertical cross-sectional configuration diagram of the embodiment; Fig. 3 is an air cleaner case. Partially cutaway plan view of the electromagnetic switching valve installed in the fourth
The figure is a side view of the carburetor, Figure 5 is a longitudinal sectional view showing the operation when the ignition circuit is cut off and the throttle valve is opened, and Figure 6 is when the ignition circuit is cut off and the throttle valve is fully opened. FIG. 7 is a longitudinal sectional view showing the operation, and is a configuration diagram showing an embodiment of the piping of the device of the present invention applied to a 4-cylinder, 4-gear brector engine. 2...Engine, 5...Air cleaner, 5d...
2nd chamber (clean side), 10...carburetor, 1
1a... Venturi section, 12... Float chamber, 12
a... Atmospheric leak jet, 13a... Piston negative pressure chamber, 13d... Air passage, 14... Throttle valve, 17... First negative pressure passage, 18... Second negative pressure Pressure passage, 1'9...Third negative pressure passage, 20...Solenoid switching valve, 20g...Atmospheric passage, 21...Main switch, 22...Kill switch, 23...Power source. //7 1 = zu 1 27 old 1, Lz () 's 26 l''g26c26G

Claims

[Scope of utility model registration request]

First, second, and third negative pressure passages connected to a float chamber of a carburetor of an internal combustion engine, a throttle valve downstream of an intake passage, and a piston negative pressure chamber of a carburetor, respectively, and responsive to opening and closing of an ignition circuit of the internal combustion engine. When the ignition circuit is closed, the first negative pressure passage is opened to the atmosphere, and both the second and third negative pressure passages are closed, and when the ignition circuit is opened, the first negative pressure passage is opened to the atmosphere. the first, while being shielded from the atmosphere;
It has an electromagnetic switching valve that switches the second and third negative pressure passages so that they are open to each other, an atmospheric leak jet that communicates between the float chamber and the atmosphere, and an air passage that connects the piston negative pressure chamber and the venturi portion of the intake passage. A fuel supply stop device for an internal combustion engine, wherein the electromagnetic switching valve is disposed on the clean side of an air cleaner of an intake system of the internal combustion engine.