JPS6466458A - Exhaust gas recirculation control method for internal combustion engine in low temperature - Google Patents
Exhaust gas recirculation control method for internal combustion engine in low temperatureInfo
- Publication number
- JPS6466458A JPS6466458A JP62224802A JP22480287A JPS6466458A JP S6466458 A JPS6466458 A JP S6466458A JP 62224802 A JP62224802 A JP 62224802A JP 22480287 A JP22480287 A JP 22480287A JP S6466458 A JPS6466458 A JP S6466458A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- exhaust gas
- gas recirculation
- temperature
- speed
- 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 intend to enlarge an exhaust gas recirculation controllable range in low temperature side by stopping exhaust gas recirculation control in a state of low engine speed in which engine speed is lower than a fixed speed while shifting the fixed speed according to temperature of the engine. CONSTITUTION:An electronic control unit 5 controls the EGR valve 22 with a negative pressure responding device 23 according to values of operating parameters of the engine through taking in signals of throttle opening, absolute pressure in an intake pipe, intake air temperature, water temperature engine speed, O2 density and EGR valve lift from sensors 4, 7-10, 13, 28. And, when a low engine speed state, in which engine speed is lower than a fixed speed, is detected, exhaust gas recirculation control by the EGR valve 22 is stopped while the fixed speed is shifted, according to engine temperature detected by the cooling water temperature sensor 9, to the one adapted to temperature condition after the engine warmed up without using the value in low temperature as it was. With constituting in such way, exhaust gas recirculation controllable range in low temperature side can be intended to enlarge without injuring drivability, and Nox component can be reduced still more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224802A JPS6466458A (en) | 1987-09-08 | 1987-09-08 | Exhaust gas recirculation control method for internal combustion engine in low temperature |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224802A JPS6466458A (en) | 1987-09-08 | 1987-09-08 | Exhaust gas recirculation control method for internal combustion engine in low temperature |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6466458A true JPS6466458A (en) | 1989-03-13 |
Family
ID=16819431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62224802A Pending JPS6466458A (en) | 1987-09-08 | 1987-09-08 | Exhaust gas recirculation control method for internal combustion engine in low temperature |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6466458A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8319969B2 (en) | 2008-02-13 | 2012-11-27 | Hewlett-Packard Development Company, L.P. | Color detector having area scaled photodetectors |
US8330955B2 (en) | 2008-02-12 | 2012-12-11 | Hewlett-Packard Development Company, L.P. | Color detector |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6166854A (en) * | 1984-09-11 | 1986-04-05 | Toyota Motor Corp | Egr controller for diesel engine |
-
1987
- 1987-09-08 JP JP62224802A patent/JPS6466458A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6166854A (en) * | 1984-09-11 | 1986-04-05 | Toyota Motor Corp | Egr controller for diesel engine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8330955B2 (en) | 2008-02-12 | 2012-12-11 | Hewlett-Packard Development Company, L.P. | Color detector |
US8319969B2 (en) | 2008-02-13 | 2012-11-27 | Hewlett-Packard Development Company, L.P. | Color detector having area scaled photodetectors |
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