JPS62119463U - - Google Patents

Description

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

第１図はこの考案に係るエンジンの吸気系路の
概略図、第２図はこの考案の一実施例による補助
空気供給装置の縦断面図、第３図はこの考案の他
の実施例による補助空気供給装置の縦断面図であ
る。 ５…スロツトルバルブ、６ａ，６ｂ…スロツト
ルバルブ下流の吸気通路、１０…補助空気供給装
置、１４…補助空気供給通路、１７…弁体、２４
…弁作動体、２６，２７…オリフイス、３２，３
３，３４…可変機構、３６，３７…可変機構。 Fig. 1 is a schematic diagram of an engine intake system according to this invention, Fig. 2 is a longitudinal sectional view of an auxiliary air supply device according to an embodiment of this invention, and Fig. 3 is an auxiliary air supply system according to another embodiment of this invention. FIG. 3 is a longitudinal cross-sectional view of the air supply device. 5... Throttle valve, 6a, 6b... Intake passage downstream of throttle valve, 10... Auxiliary air supply device, 14... Auxiliary air supply passage, 17... Valve body, 24
... Valve operating body, 26, 27... Orifice, 32, 3
3, 34... variable mechanism, 36, 37... variable mechanism.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] スロツトルバルブ下流の吸気通路へ補助空気を
供給する補助空気供給通路と、この補助空気供給
通路の開度を調整する弁体と、スロツトルバルブ
下流の吸気通路の負圧が導入される負圧室と作動
室とを仕切り、かつ、上記弁体を支持して、上記
負圧室と作動室の差圧に応じて弁体を作動させる
弁作動体と、この弁作動体に設けられて上記負圧
室と作動室を連通させるオリフイスと、上記作動
室の容積を可変とする可変機構とを備えてなるエ
ンジンの補助空気供給装置。 An auxiliary air supply passage that supplies auxiliary air to the intake passage downstream of the throttle valve, a valve body that adjusts the opening degree of this auxiliary air supply passage, and a negative pressure into which the negative pressure of the intake passage downstream of the throttle valve is introduced. a valve operating body that partitions the chamber and the working chamber, supports the valve body, and operates the valve body according to the differential pressure between the negative pressure chamber and the working chamber; An auxiliary air supply device for an engine, comprising an orifice that communicates a negative pressure chamber and a working chamber, and a variable mechanism that changes the volume of the working chamber.