JPS5718438A - Fuel-air ratio controller for internal combustion engine - Google Patents
Fuel-air ratio controller for internal combustion engineInfo
- Publication number
- JPS5718438A JPS5718438A JP9192280A JP9192280A JPS5718438A JP S5718438 A JPS5718438 A JP S5718438A JP 9192280 A JP9192280 A JP 9192280A JP 9192280 A JP9192280 A JP 9192280A JP S5718438 A JPS5718438 A JP S5718438A
- Authority
- JP
- Japan
- Prior art keywords
- air
- valve
- secondary air
- exhaust
- 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.)
- Pending
Links
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
PURPOSE: To eliminate the effect of pulsation of intake flow and exhaust flow on the fuel-air ratio in introducing secondary air to at least either the intake system or the exhaust system of an engine through an air supply passage by providing a read valve within the air supply passage for introducing secondary air at a downstream position with respect to an air control valve.
CONSTITUTION: During low-load operation of an engine, a high negative pressure at a negative pressure port 17 is applied to the negative pressure chamber 16d of a transfer valve 16. Consequently, a valve element 15 closes an intake port 16a and opens an exhaust port 16d. A computer 11 controls an air control valve 6 on the basis of the output signal provided by an oxygen sensor 10 so as to supply secondary air of a quantity necessary to maintain a predetermined fuel-air ratio requried by the catalizer contained in a catalytic converter 19 to a valve chamber 16g via passages 8 and 22. The secondary air supplied into the valve chamber is sucked into the exhaust manifold 9 via a reed valve element 3b which is repeatedly opened and closed by the pulsation of the exhaust gas. On the other hand, during middle-load operation of the engine, both ports 16a and 16b are opened so that the secondary air is supplied to the intake pipe 7 via the reed valve element 3a.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9192280A JPS5718438A (en) | 1980-07-05 | 1980-07-05 | Fuel-air ratio controller for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9192280A JPS5718438A (en) | 1980-07-05 | 1980-07-05 | Fuel-air ratio controller for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5718438A true JPS5718438A (en) | 1982-01-30 |
Family
ID=14040068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9192280A Pending JPS5718438A (en) | 1980-07-05 | 1980-07-05 | Fuel-air ratio controller for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5718438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696504A1 (en) * | 1992-10-06 | 1994-04-08 | Renault | Additional air injector for internal combustion engine - includes combustion chamber, principal inlet air conduit,and evacuation outlet conduit for burnt gases, with inlets and outlets controlled by cam operated valves |
-
1980
- 1980-07-05 JP JP9192280A patent/JPS5718438A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696504A1 (en) * | 1992-10-06 | 1994-04-08 | Renault | Additional air injector for internal combustion engine - includes combustion chamber, principal inlet air conduit,and evacuation outlet conduit for burnt gases, with inlets and outlets controlled by cam operated valves |
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