JPS63154752U

JPS63154752U -

Info

Publication number: JPS63154752U
Application number: JP4688687U
Authority: JP
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1988-10-11

Description

[Brief explanation of the drawing]

第１，２図はこの考案の実施例を示し、第１図
は汎用の内燃機関の概略断面図、第２図はチヨー
ク弁制御装置の概略説明図である。第３〜５図は
従来のチヨーク弁制御装置を示し、第３図はチヨ
ーク弁の全閉状態の説明図、第４図はチヨーク弁
の半開状態の説明図、第５図はチヨーク弁の全開
状態の説明図である。図において、２は内燃機関、４はクランクケー
ス、６はシリンダ本体、１４はシリンダライナ、
１４ａはシリンダライナの下端面、２４は気化器
、３０はチヨーク弁制御装置、３２はチヨーク軸
部、３４はチヨーク弁、３８はアクチユエータ機
構、４２は第１アクチユエータ、４４は第２アク
チユエータ、４８は１次側圧力室、５０は第１ダ
イヤフラム、６０は２次側圧力室、６２は第２ダ
イヤフラム、７０は押圧ロツド、８０は主負圧管
、８４は第１副負圧管、８６は第２副負圧管、そ
して８８は温度感知弁である。 1 and 2 show an embodiment of this invention, with FIG. 1 being a schematic sectional view of a general-purpose internal combustion engine, and FIG. 2 being a schematic explanatory view of a choke valve control device. Figures 3 to 5 show a conventional Chiyork valve control device, Figure 3 is an explanatory diagram of the Chiyork valve in a fully closed state, Figure 4 is an explanatory diagram of the Chiyork valve in a half-open state, and Figure 5 is an illustration of the Chiyork valve in a fully open state. It is an explanatory diagram of a state. In the figure, 2 is an internal combustion engine, 4 is a crankcase, 6 is a cylinder body, 14 is a cylinder liner,
14a is the lower end surface of the cylinder liner, 24 is the carburetor, 30 is the chiyoke valve control device, 32 is the chiyoke shaft, 34 is the chiyoke valve, 38 is the actuator mechanism, 42 is the first actuator, 44 is the second actuator, 48 is the Primary side pressure chamber, 50 is the first diaphragm, 60 is the secondary side pressure chamber, 62 is the second diaphragm, 70 is the pressing rod, 80 is the main negative pressure pipe, 84 is the first sub negative pressure pipe, 86 is the second sub negative pressure chamber. a negative pressure pipe, and 88 a temperature sensing valve.

Claims

[Claims for Utility Model Registration] 1. An actuator mechanism is provided that opens and closes a carburetor choke valve of an internal combustion engine using negative pressure in an intake pipe, and a temperature sensing valve is provided that controls the operation of the actuator mechanism according to the temperature state of the internal combustion engine. . A carburetor valve control device, characterized in that the temperature sensing valve is provided near a cylinder body of the internal combustion engine. 2. The actuator mechanism includes a first actuator that maintains the carburetor check valve at a primary setting opening degree, and a first actuator that cooperates with the first actuator to maintain the carburetor check valve opening degree larger than the primary setting opening degree. Claim 1. A carburetor valve control device according to claim 1, which is an actuator mechanism having a second actuator that maintains the opening at the next set opening.