JPS60159819U

JPS60159819U - Secondary air introduction device

Info

Publication number: JPS60159819U
Application number: JP4671484U
Authority: JP
Inventors: 木下　昭博
Original assignee: 日産自動車株式会社
Priority date: 1984-04-02
Filing date: 1984-04-02
Publication date: 1985-10-24

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]

第１図及び第２図は、従来の二次空気導入装置の一例を
示す異なる動作状態の断面図、第３図及び第４図は、こ
の考案の一実施例を示す異なる動作状態の縦断面斜視図
、第５図は、この考案の他の実施例を示す部分斜視図、
第６図は、この考案のさらに他の実施例を示す部分縦断
面図、第７図は、この考案に使用するピストンの他の例
を示す　　　゛斜視図である。１０・・・筒体、１０ｂ・・・空気導入孔、１０ｃ・・
・小孔、１１・・・台座、１２．１２’・・・ピストン
、１５・・・二次空気導入路、１６・・・二次空気導入
管。1 and 2 are cross-sectional views of an example of a conventional secondary air introduction device in different operating states, and FIGS. 3 and 4 are longitudinal cross-sectional views of an embodiment of this invention in different operating states. A perspective view, FIG. 5 is a partial perspective view showing another embodiment of this invention,
FIG. 6 is a partial vertical sectional view showing still another embodiment of this invention, and FIG. 7 is a perspective view showing another example of the piston used in this invention. 10... Cylindrical body, 10b... Air introduction hole, 10c...
- Small hole, 11...Pedestal, 12.12'...Piston, 15...Secondary air introduction path, 16...Secondary air introduction pipe.

Claims

[Scope of utility model registration request]

A cylindrical body having an air introduction hole on a side surface and communicating with the exhaust system of the engine via a secondary air introduction pipe, and a communication hole slidably provided within the cylinder and communicating with the air introduction hole. and a spring that normally biases the piston to a position where the introduction hole is closed. When negative pressure is generated in the exhaust system of the engine, the negative pressure causes the piston to close the communication hole. A secondary air introduction device, characterized in that it is slid to a position communicating with an air introduction hole of a body, and the secondary air is introduced through the communication hole.