JPS5564112A - Secondary air supplying system for internal combustion engine - Google Patents
Secondary air supplying system for internal combustion engineInfo
- Publication number
- JPS5564112A JPS5564112A JP13608278A JP13608278A JPS5564112A JP S5564112 A JPS5564112 A JP S5564112A JP 13608278 A JP13608278 A JP 13608278A JP 13608278 A JP13608278 A JP 13608278A JP S5564112 A JPS5564112 A JP S5564112A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- exhaust system
- secondary air
- check valve
- combustion engine
- 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 provide a secondary air supplying system for internal combustion engine, in which an air suction pipe connected between a check valve and a portion of exhaust system employs a diameter-different pipe having a larger diameter at its portion connected to the exhaust system, so that amount of secondary air supplied to the exhaust system can be increased, and at the same time, installation space of the apparatus can be reduced since the radius of curvature of the air suction pipe can be rendered small.
CONSTITUTION: In an arrangement for supplying secondary air to the exhaust system by opening, by use of pulsation of exhaust gas in the exhaust system, a check valve 10 disposed at one end of air suction pipe 9 connected to exhaust system 2, 3, 4, said pipe 9 is constituted by a first pipe portion 9' connected at one end to front pipe 4 and a second pipe portion 9" provided at one end with a check valve 10. Here, the pipe portion 9' on the side of front pipe 4 is shaped to have a larger inner diameter (d1), whereas pipe portion 9" on the side of check valve 10 is shaped to have a smaller inner diameter (d2). With such an arrangement, pressure wave in front pipe 4 can be transmitted to the portion of check valve 10 with low attenuation, so that amount of secondary air supplied to the exhaust system can be increased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13608278A JPS5928732B2 (en) | 1978-11-04 | 1978-11-04 | Secondary air supply device in internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13608278A JPS5928732B2 (en) | 1978-11-04 | 1978-11-04 | Secondary air supply device in internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5564112A true JPS5564112A (en) | 1980-05-14 |
JPS5928732B2 JPS5928732B2 (en) | 1984-07-16 |
Family
ID=15166817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13608278A Expired JPS5928732B2 (en) | 1978-11-04 | 1978-11-04 | Secondary air supply device in internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5928732B2 (en) |
-
1978
- 1978-11-04 JP JP13608278A patent/JPS5928732B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5928732B2 (en) | 1984-07-16 |
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