JPS6483846A - Exhaust gas recirculation controller - Google Patents
Exhaust gas recirculation controllerInfo
- Publication number
- JPS6483846A JPS6483846A JP24227687A JP24227687A JPS6483846A JP S6483846 A JPS6483846 A JP S6483846A JP 24227687 A JP24227687 A JP 24227687A JP 24227687 A JP24227687 A JP 24227687A JP S6483846 A JPS6483846 A JP S6483846A
- Authority
- JP
- Japan
- Prior art keywords
- trap
- duty ratio
- inlet pressure
- egr
- egr rate
- 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
- Processes For Solid Components From Exhaust (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
PURPOSE:To enable optimum EGR control all the time by finding a duty ratio and an EGR rate prior to particulate collection from outlet pressure or the like in an exhaust trap, and controlling an EGR valve with a compensating duty ratio corresponding to this EGR rate and inlet pressure in the exhaust trap. CONSTITUTION:In driving of an engine 5, each output signal of an inlet pressure sensor 9 and an outlet pressure sensor 10, detecting pressure at both up-and downstream sides of an exhaust trap 8 in an exhaust passage is inputted into a controller 1 together with each output signal of an engine speed sensor 6 and a load sensor 7. At this controller 1, first it is found out of a duty ratio corresponding to engine speed and load. This, inlet pressure at an uncollected state of the trap 8 is calculated from outlet pressure in the trap 8, and a proper EGR rate prior to compensation of the trap 8 is found out of a map from this inlet pressure and the duty ratio. A duty ratio corresponding to the measured inlet pressure as keeping this EGR rate intact is found, controlling a solenoid valve, thereby making it control an EGR valve 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24227687A JP2555633B2 (en) | 1987-09-25 | 1987-09-25 | Exhaust gas recirculation control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24227687A JP2555633B2 (en) | 1987-09-25 | 1987-09-25 | Exhaust gas recirculation control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6483846A true JPS6483846A (en) | 1989-03-29 |
JP2555633B2 JP2555633B2 (en) | 1996-11-20 |
Family
ID=17086851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24227687A Expired - Fee Related JP2555633B2 (en) | 1987-09-25 | 1987-09-25 | Exhaust gas recirculation control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2555633B2 (en) |
-
1987
- 1987-09-25 JP JP24227687A patent/JP2555633B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2555633B2 (en) | 1996-11-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |