JPS5664115A - Exhaust gas purifier for internal combustion engine - Google Patents
Exhaust gas purifier for internal combustion engineInfo
- Publication number
- JPS5664115A JPS5664115A JP14098779A JP14098779A JPS5664115A JP S5664115 A JPS5664115 A JP S5664115A JP 14098779 A JP14098779 A JP 14098779A JP 14098779 A JP14098779 A JP 14098779A JP S5664115 A JPS5664115 A JP S5664115A
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air fuel
- low
- load running
- degree
- 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 reduce the purifying load of CO, HC and NOx upon a ternary catalyst and improve purification efficiency, by setting a primary air fuel ratio at a rich side and a secondary air fuel ratio at a thin lean during idling or low-load running.
CONSTITUTION: In a carburetor 4, an actual air fuel ratio is set richer than a theoretical air fuel ratio to decrease Nox during idling or low-load running in which a throttle valve 7 is entirely closed or almost entirely closed. The actual air fuel ratio is set equal to the theroretical air fuel ratio when the degree of opening of the throttle valve 7 is larger than said degree of opening. In the idling or low-load running, strong negative pressure is applied to the diaphragm chamber 18 of a control valve unit 11 through a passage 21 to open a port 14 to introduce secondary air into an exhaust passage 6. The air fuel ratio of an exhaust system is thus changed to a lean side to highly purify CO and HC by a catalyst 5.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14098779A JPS5664115A (en) | 1979-10-30 | 1979-10-30 | Exhaust gas purifier for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14098779A JPS5664115A (en) | 1979-10-30 | 1979-10-30 | Exhaust gas purifier for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5664115A true JPS5664115A (en) | 1981-06-01 |
JPS624532B2 JPS624532B2 (en) | 1987-01-30 |
Family
ID=15281494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14098779A Granted JPS5664115A (en) | 1979-10-30 | 1979-10-30 | Exhaust gas purifier for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5664115A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5824412U (en) * | 1981-08-11 | 1983-02-16 | 日産自動車株式会社 | Internal combustion engine exhaust purification device |
JPS58104316A (en) * | 1981-12-16 | 1983-06-21 | Toyota Motor Corp | Secondary air control for internal-combustion engine |
JPS6248912A (en) * | 1985-08-27 | 1987-03-03 | Daihatsu Motor Co Ltd | Secondary air induction reactor |
JP2009156222A (en) * | 2007-12-27 | 2009-07-16 | Yamaha Motor Co Ltd | Secondary air supply system and vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49124421A (en) * | 1973-04-03 | 1974-11-28 | ||
JPS5166934A (en) * | 1974-12-06 | 1976-06-10 | Nissan Motor | Nainenkikanno kunenhiseigyosochi |
JPS54896U (en) * | 1978-06-07 | 1979-01-06 | ||
JPS5427618A (en) * | 1977-07-29 | 1979-03-01 | Daihatsu Motor Co Ltd | Exhaust air suction control device for internal combustion engine |
-
1979
- 1979-10-30 JP JP14098779A patent/JPS5664115A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49124421A (en) * | 1973-04-03 | 1974-11-28 | ||
JPS5166934A (en) * | 1974-12-06 | 1976-06-10 | Nissan Motor | Nainenkikanno kunenhiseigyosochi |
JPS5427618A (en) * | 1977-07-29 | 1979-03-01 | Daihatsu Motor Co Ltd | Exhaust air suction control device for internal combustion engine |
JPS54896U (en) * | 1978-06-07 | 1979-01-06 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5824412U (en) * | 1981-08-11 | 1983-02-16 | 日産自動車株式会社 | Internal combustion engine exhaust purification device |
JPS58104316A (en) * | 1981-12-16 | 1983-06-21 | Toyota Motor Corp | Secondary air control for internal-combustion engine |
JPS6248912A (en) * | 1985-08-27 | 1987-03-03 | Daihatsu Motor Co Ltd | Secondary air induction reactor |
JPH057530B2 (en) * | 1985-08-27 | 1993-01-29 | Daihatsu Motor Co Ltd | |
JP2009156222A (en) * | 2007-12-27 | 2009-07-16 | Yamaha Motor Co Ltd | Secondary air supply system and vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPS624532B2 (en) | 1987-01-30 |
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