JPS59174350U

JPS59174350U - 2-bar vaporizer

Info

Publication number: JPS59174350U
Application number: JP6841483U
Authority: JP
Inventors: 早川　正春
Original assignee: 愛三工業株式会社
Priority date: 1983-05-06
Filing date: 1983-05-06
Publication date: 1984-11-21

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]

図面は本考案の実施例を示すもので、第１図は側断面図
、第２図はチョーク機構を示す略図、第３図はエアバル
ブ機構を示す正断面図、第４図は同側面図、第５図Ａは
機関の冷間時におけるチョークバルブとエアバルブの相
対位置を示す平面図、第５図Ｂは同側面図、第６図Ａは
機関の完全暖機後における低吸入空気量運転時のチョー
クバルブとエアバルブの相対位置を示す平面図、第６図
Ｂは同側面図、第７図Ａは機関の完全暖機後における高
吸入空気量運転時のチョークバルブとエアバルブの相対
位置を示す平面図、第７図Ｂは同側面図、第８図及び第
９図は燃料増量の温度によって制御するバルブの他の機
構を示す夫々断面図、第１０図は本考案と従来構造とに
おける空気量と燃料流量とを比較する特性図である。２パ・・・・・プライマリ側吸気通路、３・・・・・・
チョークバルブ、４・・・・・・チョークバルブシャフ
ト、８・・・・・・ファーストスロットルバルブ、１９
・・・・・・セカンダリ側吸気通路、２０・・・・・・
エアバルブ、２１・・・・・・エアバルブシャフト、２
２・・・・・・カム、２３・・・・・・作動レバー、２
７・・・・・・メタリングニードル、３１・・・・・・
セカンドメインジェット、３４・・・・・・セカンドス
ロットルバルブ、３６・・・・・・レバー、４０・・・
・・・レバー、４１・・・・・・スプリング。 ’１１　　’、　−１，ＩＩ　２ｏ　−。２９　　　臣ｌ　　　（４５柘The drawings show an embodiment of the present invention, in which Fig. 1 is a side sectional view, Fig. 2 is a schematic diagram showing the choke mechanism, Fig. 3 is a front sectional view showing the air valve mechanism, and Fig. 4 is a side view of the same. Figure 5A is a plan view showing the relative positions of the choke valve and air valve when the engine is cold, Figure 5B is a side view of the same, and Figure 6A is during low intake air flow operation after the engine has completely warmed up. 6B is a side view of the same, and FIG. 7A is a plan view showing the relative positions of the choke valve and air valve during high intake air flow operation after the engine has been completely warmed up. 7B is a side view of the same, FIGS. 8 and 9 are sectional views showing other mechanisms of the valve that controls fuel increase by temperature, and FIG. FIG. 3 is a characteristic diagram comparing the amount and fuel flow rate. 2 pa...Primary side intake passage, 3...
Choke valve, 4...Choke valve shaft, 8...First throttle valve, 19
...Secondary side intake passage, 20...
Air valve, 21... Air valve shaft, 2
2...Cam, 23...Operating lever, 2
7...Metaling needle, 31...
Second main jet, 34... Second throttle valve, 36... Lever, 40...
...Lever, 41...Spring. '11', -1,II 2o -. 29 minister l (45 柘

Claims

[Scope of utility model registration request]

A choke valve 3 in the primary side intake passage corrects fuel supply when the engine is cold; an air valve 20 in the secondary side intake passage that opens by negative pressure generated by opening of the second throttle valve 34;
The choke valve 3 and the air valve 20 are provided with a fuel increase mechanism that increases the amount of fuel according to the opening degree of the choke valve 3 and the air valve 20
are connected by a biasing means that elastically biases the air valve 20 in the closing direction, and a cold fuel that senses the temperature of the engine and additionally supplies fuel to the fuel increase mechanism when the engine is cold. A two-barrel carburetor characterized by being equipped with a volume increase mechanism.