JPS557949A - Exhaust gas returning system in cylinder-number controlling engine - Google Patents
Exhaust gas returning system in cylinder-number controlling engineInfo
- Publication number
- JPS557949A JPS557949A JP8047578A JP8047578A JPS557949A JP S557949 A JPS557949 A JP S557949A JP 8047578 A JP8047578 A JP 8047578A JP 8047578 A JP8047578 A JP 8047578A JP S557949 A JPS557949 A JP S557949A
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- chamber
- cylinder
- exhaust gas
- control valve
- 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
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
PURPOSE: To restrain the increase of NOX efficiently by promoting the signal negative pressure relatively to supply to an exhaust gas returning control valve at the time of cylinder-number controlling for enlarging the opening of the control valve.
CONSTITUTION: In this engine, for example, injection pulse signals to fuel injection valves 3aW3c are cut by a cylinder-number controlling circuit 2 at the time of a light load. Here, into a negative pressure operating chamber 20 of an exhaust gas returning control valve 12, a VC negative pressure diluted and controlled by the air is supplied through a negative pressure control device 21, which is composed of a negative pressure control chamber 26 separated by three diaphragms 22W24 connected with each other, a pressure chamber 27, an air chamber 28, and an exhaust pressure chamber 29. The pressure chamber 27 is connected to a negative pressure passage 45 through a three-way electromagnetic valve 41 to be excited and opened at the time of three cylinder operation, and thus, a control negative pressure P is relatively promoted for enlarging the opening of the above-written control valve 12.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8047578A JPS557949A (en) | 1978-07-04 | 1978-07-04 | Exhaust gas returning system in cylinder-number controlling engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8047578A JPS557949A (en) | 1978-07-04 | 1978-07-04 | Exhaust gas returning system in cylinder-number controlling engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS557949A true JPS557949A (en) | 1980-01-21 |
Family
ID=13719284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8047578A Pending JPS557949A (en) | 1978-07-04 | 1978-07-04 | Exhaust gas returning system in cylinder-number controlling engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS557949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58108246U (en) * | 1982-01-19 | 1983-07-23 | 三菱自動車工業株式会社 | Exhaust gas recirculation deactivated engine |
| JP2008150969A (en) * | 2006-12-14 | 2008-07-03 | Yamaha Motor Co Ltd | Internal combustion engine |
-
1978
- 1978-07-04 JP JP8047578A patent/JPS557949A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58108246U (en) * | 1982-01-19 | 1983-07-23 | 三菱自動車工業株式会社 | Exhaust gas recirculation deactivated engine |
| JP2008150969A (en) * | 2006-12-14 | 2008-07-03 | Yamaha Motor Co Ltd | Internal combustion engine |
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