JPS581714U

JPS581714U - Engine secondary air introduction device

Info

Publication number: JPS581714U
Application number: JP9240281U
Authority: JP
Inventors: 天野　勝久; 熊谷　信; 正木　明雄; 島田　新一; 武鈴木; 大高　正一
Original assignee: 本田技研工業株式会社
Priority date: 1981-06-24
Filing date: 1981-06-24
Publication date: 1983-01-07
Also published as: JPS612264Y2

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 the drawing]

第１図は従来例の一部の線図、第２図はその特性線図、
第３図は本案装置の１例の平面図、第４図はその一部を
截除した正面図、第５図はその一部を截除した側面図、
第６図はその一部の系統線図、第７図はその特性線図で
ある。１・・・・・・エンジン本体、２・・・・・・排気マニ
ホルド、３・・・・・・エアクリーナ、４・・・・・・
二次空気導入通路１．５・・・・・・逆止弁、６・・・
・・・第１拡張室、７・・・・・・第２拡張室、８・・
・・・・吸気マニホルド。Figure 1 is a partial diagram of the conventional example, Figure 2 is its characteristic diagram,
FIG. 3 is a plan view of one example of the proposed device, FIG. 4 is a partially cut-away front view, and FIG. 5 is a partially cut-away side view.
FIG. 6 is a part of the system diagram, and FIG. 7 is a characteristic diagram thereof. 1... Engine body, 2... Exhaust manifold, 3... Air cleaner, 4...
Secondary air introduction passage 1.5... Check valve, 6...
...First expansion room, 7...Second expansion room, 8...
...Intake manifold.

Claims

[Claims for Utility Model Registration] 1. A secondary air introduction passage 4 is provided in the engine body 1 to communicate the exhaust manifold 2 and the air cleaner 3, and a secondary air introduction passage 4 is provided in the passage 4 to respond to the pulsating pressure within the exhaust manifold 2. In the type in which a check valve 5 is inserted, a first expansion chamber 6 on the upstream side of the check valve 5 and a second expansion chamber 7 on the upstream side thereof are intervened in the passage 4, and at least the reverse A secondary air introduction device for an engine comprising a stop valve 5 and the first expansion chamber 6 fixed to an intake manifold 8. 2. The check valve 5 and the first expansion chamber 6 are interposed between the intake pipe 9 extending upward from the intake manifold 8 and the cylinder head cover 1a at the top of the engine body 1, so that the upper surface of the manifold 8 A secondary air introduction device for an engine as set forth in claim 1 of the utility model registration, which is fixed to a. 3. The engine according to claim 2, wherein a connecting portion 4a constituting a part of the secondary air introduction passage 4 is integrally formed with the intake manifold 8 on the downstream side of the check valve 5. secondary air introduction device.