JPS5495825A - Secondary air supply device of internal combustion engine exhaust gas purifier - Google Patents

Secondary air supply device of internal combustion engine exhaust gas purifier

Info

Publication number
JPS5495825A
JPS5495825A JP215978A JP215978A JPS5495825A JP S5495825 A JPS5495825 A JP S5495825A JP 215978 A JP215978 A JP 215978A JP 215978 A JP215978 A JP 215978A JP S5495825 A JPS5495825 A JP S5495825A
Authority
JP
Japan
Prior art keywords
air supply
secondary air
exhaust gas
check valve
exhaust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP215978A
Other languages
Japanese (ja)
Other versions
JPS6038530B2 (en
Inventor
Shuji Sawafuji
Masahiro Ozawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Subaru Corp
Original Assignee
Fuji Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Heavy Industries Ltd filed Critical Fuji Heavy Industries Ltd
Priority to JP215978A priority Critical patent/JPS6038530B2/en
Publication of JPS5495825A publication Critical patent/JPS5495825A/en
Publication of JPS6038530B2 publication Critical patent/JPS6038530B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: To prevent a secondary air supply check valve from degrading the durability due to heat by connecting a branch line with a secondary air supply passage, which includes an exhaust gas release check valve and is communicated with an exhaust pipe through a duct.
CONSTITUTION: A branch pipe 8 is connected with a seondary air supply passage 6, which includes an exhaust gas relief check valve 12 and is communicated with an exhaust pipe 14 through a duct 13. When exhaust pulse pressure is negative, open air passes through an air cleaner 11, a seondary air supply check valve 10, and the secondary air supply passage 6 and comes into an exhaust port 3, where unburnt composition in exhaust gas is promoted to oxidize. Under high load and at high velocity, exhaust gas reflux straightly flows through the secondary air supply passage 6 into the branch pipe 8 and is accmulated in a gas reservoir 15, not flowing to the secondary air supply check valve 10. The secondary air supply check valve 10 may be therefore prevented from decreasing in durability due to exhaust gas heat.
COPYRIGHT: (C)1979,JPO&Japio
JP215978A 1978-01-12 1978-01-12 Secondary air supply device in exhaust gas purification device of internal combustion engine Expired JPS6038530B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP215978A JPS6038530B2 (en) 1978-01-12 1978-01-12 Secondary air supply device in exhaust gas purification device of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP215978A JPS6038530B2 (en) 1978-01-12 1978-01-12 Secondary air supply device in exhaust gas purification device of internal combustion engine

Publications (2)

Publication Number Publication Date
JPS5495825A true JPS5495825A (en) 1979-07-28
JPS6038530B2 JPS6038530B2 (en) 1985-09-02

Family

ID=11521567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP215978A Expired JPS6038530B2 (en) 1978-01-12 1978-01-12 Secondary air supply device in exhaust gas purification device of internal combustion engine

Country Status (1)

Country Link
JP (1) JPS6038530B2 (en)

Also Published As

Publication number Publication date
JPS6038530B2 (en) 1985-09-02

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