JPS63123749U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係わる気化器の補助燃料供給
装置の構成断面図、第２図は第１図における補助
燃料プランジヤ位置での拡大断面図、第３図は従
来の気化器の補助燃料供給装置の構成断面図、第
４図はスロツトルバルブ開度と燃料流量との関係
を示す特性図である。 １０……気化器本体、１２……吸気通路、１４
……ピストンバルブ、１６……スロツトルバルブ
、１８……ガバナーバルブ、３４……ソレノイド
バルブ、３６……補助燃料通路、３８……大気通
路、４０……エマルジヨン通路、４２……プラン
ジヤ、４４……ニードル。 Fig. 1 is a cross-sectional view of the structure of the auxiliary fuel supply device for a carburetor according to the present invention, Fig. 2 is an enlarged sectional view at the auxiliary fuel plunger position in Fig. 1, and Fig. 3 is a conventional auxiliary fuel supply for a carburetor. FIG. 4, which is a sectional view of the structure of the device, is a characteristic diagram showing the relationship between the throttle valve opening and the fuel flow rate. 10... Carburetor body, 12... Intake passage, 14
... Piston valve, 16 ... Throttle valve, 18 ... Governor valve, 34 ... Solenoid valve, 36 ... Auxiliary fuel passage, 38 ... Atmospheric passage, 40 ... Emulsion passage, 42 ... Plunger, 44 ... …needle.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 気化器本体の吸気通路断面を可変させるための
相互に連動作動するピストンバルブとスロツトル
バルブと、エンジンの回転数に応じて吸気通路断
面を可変させるガバナーバルブと、ガバナーバル
ブ付近の吸気通路に開口するエマルジヨン通路と
、このエマルジヨン通路の上流に設けられる燃料
通路及び大気通路と、このエマルジヨン通路の途
中に備えられ所定のスロツトルバルブの開度以上
の時にそのエマルジヨン通路を開くためのソレノ
イドバルブとを有する気化器の補助燃料供給装置
において、前記スロツトルバルブの作動に連動し
て前記燃料通路の通路断面と大気通路の通路断面
とを同時に可変させる手段を設け、スロツトルバ
ルブの開度が大きくなるに伴なつてその手段で燃
料通路と大気通路の各通路断面を大きくするよう
にしたことを特徴とする気化器の補助燃料供給装
置。 A piston valve and a throttle valve that operate in conjunction with each other to vary the cross-section of the intake passage in the carburetor body, a governor valve that varies the cross-section of the intake passage according to the engine speed, and an opening in the intake passage near the governor valve. a fuel passage and an atmospheric passage provided upstream of the emulsion passage, and a solenoid valve provided midway through the emulsion passage for opening the emulsion passage when the opening degree of the throttle valve is greater than or equal to a predetermined opening degree. In the auxiliary fuel supply device for a carburetor, there is provided a means for simultaneously varying the passage cross section of the fuel passage and the passage cross section of the atmospheric passage in conjunction with the operation of the throttle valve, so that the opening degree of the throttle valve is increased. An auxiliary fuel supply device for a carburetor, characterized in that the cross section of each of the fuel passage and the atmosphere passage is enlarged.