JPH01130052U

JPH01130052U -

Info

Publication number: JPH01130052U
Application number: JP2476188U
Authority: JP
Priority date: 1988-02-26
Filing date: 1988-02-26
Publication date: 1989-09-05

Description

[Brief explanation of the drawing]

第１図は本考案になる気化器の始動装置の一実
施例を示す要部断面図、第２図は空気弁の右側面
図、第３図は他の実施例を示す要部断面図である
。９……始動燃料通路、１１……始動空気通路、
１１Ａ……上流側始動空気通路、１２Ｂ……下流
側始動空気通路、１２……始動混合気通路、１３
……始動弁、２０……弁座、２１……空気弁、２
１Ａ……弁部、２１Ｃ……制御通路、２２……リ
リーフスプリング。 Fig. 1 is a sectional view of the essential parts showing one embodiment of the starting device for a carburetor according to the present invention, Fig. 2 is a right side view of the air valve, and Fig. 3 is a sectional view of the main parts showing another embodiment. be. 9... Starting fuel passage, 11... Starting air passage,
11A...Upstream starting air passage, 12B...Downstream starting air passage, 12...Starting mixture passage, 13
...Starting valve, 20...Valve seat, 21...Air valve, 2
1A...valve section, 21C...control passage, 22...relief spring.

Claims

[Scope of Claim for Utility Model Registration] A starting fuel passage 9 is opened at the bottom of the starting valve chamber 7 formed in the carburetor body 1 and extends below a constant liquid level in the float chamber 5. A starting air passage 11 communicating with the atmosphere and a starting air mixture passage 12 communicating with the intake passage 2 on the engine side from the throttle valve 3 are opened on the side and are movably arranged in the starting valve chamber 7. Starting valve 1
3, in the carburetor starting device which controls the opening and closing of the starting fuel passage 9, the starting air passage 11, and the starting mixture passage 12, an air valve is provided in the starting air passage 11 to control the amount of air flowing through the starting air passage. 21 and automatically increases the amount of air flowing through the starting air passage 11 controlled by the air valve in response to an increase in the negative pressure acting on the air valve 21. In the starting air passage 11, a valve seat 20 is provided facing the starting valve chamber 7; a tapered valve portion 21A is arranged facing the valve seat 20 and corresponds to the valve seat 20; an air valve 21 having a control passage 21C that communicates the upper and downstream starting air passages 11A and 11B of the air valve 20; a relief spring 22 that presses the valve portion 21A of the air valve 21 against the valve seat 20; The starting device for a carburetor according to claim 1. Claim 2 wherein the set load of the relief spring 22 is increased in response to a decrease in engine ambient temperature.
Starting device for the carburetor described.