JPS59177766U

JPS59177766U - carburetor fuel control device

Info

Publication number: JPS59177766U
Application number: JP7228383U
Authority: JP
Inventors: 大内　清治; 牛島　賢児; 六車　卓
Original assignee: マツダ株式会社
Priority date: 1983-05-13
Filing date: 1983-05-13
Publication date: 1984-11-28

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 drawings]

第１図はエンジン温度とチョーク弁の開度との相関関係
図、第２図は本考案の実施例に係る燃料制御装置を備え
た自動車エンジン用気化器の要部縦断面図である。１・・・気化器、２・・・スロットルバルブ、３・・・
チョーク弁、４・・・吸気通路、８・・・メインノズル
、９・・・メインエアジェツト、１０・・・サブエアジ
ェツト、１４・・・負圧取出口、１６・・・メインエア
通路、１７・・・サブエア通路、１８・・・メイン燃料
通路、２０・・・エアブリード制御装置、２１・・・弁
部材、２２・・・中間作動子、２３・・・熱応動部材、
３１・・・チョーク弁軸、３２・・・第１回動レバー、
３３・・・バイメタル、３４・・・バイメタル固定軸、
３５・・・第２回動レバー、４０・・・チョーク弁制御
装置、４１・・・アクチュエータ、５０・・・作動杆、
５４・・・開閉弁、５５・・・水温センサ。FIG. 1 is a diagram showing the correlation between engine temperature and the opening degree of the choke valve, and FIG. 2 is a vertical cross-sectional view of a main part of a carburetor for an automobile engine equipped with a fuel control device according to an embodiment of the present invention. 1... Carburetor, 2... Throttle valve, 3...
Choke valve, 4... Intake passage, 8... Main nozzle, 9... Main air jet, 10... Sub air jet, 14... Negative pressure outlet, 16... Main air passage, 17... Sub air passage, 18... Main fuel passage, 20... Air bleed control device, 21... Valve member, 22... Intermediate actuator, 23... Thermal response member,
31...Choke valve shaft, 32...First rotating lever,
33... Bimetal, 34... Bimetal fixed shaft,
35... Second rotating lever, 40... Choke valve control device, 41... Actuator, 50... Operating rod,
54... Open/close valve, 55... Water temperature sensor.

Claims

[Scope of utility model registration request]

A choke valve is installed at a position on the intake upstream side of the position where the venturi part is formed in the intake passage having the venturi part, and a throttle valve is installed at a position downstream of the intake air from the position where the venturi part is formed, and the venturi part is installed in the intake passage. , a main nozzle communicating with a main fuel passage and an air bleed passage is provided, and the fuel injected from the main nozzle into the intake passage in relation to the opening degrees of the throttle valve and the t-yoke valve and the amount of air bleed; A fuel control device for a carburetor that mixes intake air in the intake passage to form an air-fuel mixture with a predetermined air-fuel ratio, the choke valve having a preset value for the engine temperature. An appropriate choke valve control device is provided which operates to close the choke valve to a fully open state in the following cases and to fully open the choke valve when the engine temperature is higher than the set value, and the air bleed The portion is provided with an appropriate air bleed control device that operates to increase the passage area of the air bleed air passage communicating with the main fuel passage as the engine temperature rises from the time when the choke valve is at least fully opened. A fuel control device for a carburetor.