JPS60137155U

JPS60137155U - Carburetor complete explosion correction device

Info

Publication number: JPS60137155U
Application number: JP2481984U
Authority: JP
Inventors: 博志土屋
Original assignee: 三菱自動車工業株式会社
Priority date: 1984-02-23
Filing date: 1984-02-23
Publication date: 1985-09-11

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図および第２図は従来例を示すもので、第１図は全
体の概略構成図、第２図はエンジン本体の低温始動時に
おける混合気の空燃比の変化状態を示す特性図、第３図
および第４図はこの考案の一実施例を示すもので、第３
図は全体の概略構成図、第４図はエンジン本体の低温始
動時における混合気の空燃比の変化状態を示す特性図で
ある。１・・・吸気管、２・・・ベンチュリ、３・・・燃料噴
射ノズル、９・・・チョークバルブ、１０・・・スロッ
トルバルブ、１１・・・完爆補正部、１２・・・ダイヤ
フラム、１３・・・圧力室、１５・・・連結管、２１・
・・エンジン本体、２３・・・サーモバルブ。力゛ｌ＋−１− １１し′務 −（シ〜ｂ（ＡFigures 1 and 2 show a conventional example. Figure 1 is a schematic diagram of the overall configuration, Figure 2 is a characteristic diagram showing how the air-fuel ratio of the air-fuel mixture changes when the engine is started at a low temperature, and Figures 3 and 4 show an embodiment of this invention.
The figure is a schematic diagram of the overall configuration, and FIG. 4 is a characteristic diagram showing the state of change in the air-fuel ratio of the air-fuel mixture when the engine main body is started at a low temperature. DESCRIPTION OF SYMBOLS 1... Intake pipe, 2... Venturi, 3... Fuel injection nozzle, 9... Choke valve, 10... Throttle valve, 11... Complete explosion correction part, 12... Diaphragm, 13... Pressure chamber, 15... Connecting pipe, 21...
...Engine body, 23...thermo valve. Power ゛l+-1- 11's duty-(shi~b (A

Claims

[Scope of utility model registration request]

A venturi is installed in the intake pipe of the engine body, and the fuel injection nozzle of the carburetor is installed in this venturi, the choke valve for adjusting the amount of air is placed on the upstream side of the venturi, and the air is supplied into the combustion chamber of the engine body on the downstream side. A throttle valve for adjusting the mixture amount of air and fuel is provided, and a complete explosion correction section is provided in which a pressure chamber partitioned by a diaphragm is formed. The downstream side of the throttle valve in the intake pipe is connected via a connecting pipe, and the choke valve is opened and closed in accordance with the operation of the diaphragm according to pressure changes in the pressure chamber. In the device, the pressure chamber is maintained at a constant pressure state until the exhaust gas temperature reaches a predetermined set value by a first switching device that operates according to the exhaust gas temperature of the engine main body. , the exhaust gas temperature is ■-1,
A carburetor comprising a thermovalve that switches to a second switching position for changing the pressure in the pressure chamber in accordance with the negative pressure downstream of the throttle valve in the intake pipe when the set value is reached. Complete explosion correction device.