JPS5495825A - Secondary air supply device of internal combustion engine exhaust gas purifier - Google Patents
Secondary air supply device of internal combustion engine exhaust gas purifierInfo
- 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
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
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) |
-
1978
- 1978-01-12 JP JP215978A patent/JPS6038530B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6038530B2 (en) | 1985-09-02 |
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