JPS643257A - Control device for recirculation of exhaust gas - Google Patents
Control device for recirculation of exhaust gasInfo
- Publication number
- JPS643257A JPS643257A JP62158703A JP15870387A JPS643257A JP S643257 A JPS643257 A JP S643257A JP 62158703 A JP62158703 A JP 62158703A JP 15870387 A JP15870387 A JP 15870387A JP S643257 A JPS643257 A JP S643257A
- Authority
- JP
- Japan
- Prior art keywords
- egr
- opening
- valve
- time
- intake air
- 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)
Abstract
PURPOSE:To simplify the self-diagnosis of EGR by judging abnormal when the difference between the quantity of intake air at the time of opening an EGR passage and the quantity of intake air at the time of closing it is within a defined range. CONSTITUTION:The detected values of an intake pipe pressure sensor 2, a rotation sensor 7 provided on a distributor 6, a throttle position sensor 10, an intake air temperature sensor 12, etc. are inputted into a control circuit 8, which, in turn, carries out the opening/closing control of the opening of an EGR valve 13 via a solenoid valve 15. That is, at the time of cold, idling, and high load conditions, an atmospheric pressure is introduced into a modulator 14 and the EGR valve 13 is closed, whereas, at the time of other operating conditions, negative pressure in the vicinity of a throttle valve 9 is introduced into the modulator 14. When the conditions of EGR is being established, by carrying out the opening/closing of the EGR valve 13 via the solenoid valve 15 and if the deviation of intake pipe pressures across the EGR valve 13 is in a defined range, the EGR is judged abnormal and a warning lamp 30 is turned ON.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62158703A JPS643257A (en) | 1987-06-25 | 1987-06-25 | Control device for recirculation of exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62158703A JPS643257A (en) | 1987-06-25 | 1987-06-25 | Control device for recirculation of exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643257A true JPS643257A (en) | 1989-01-09 |
Family
ID=15677511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62158703A Pending JPS643257A (en) | 1987-06-25 | 1987-06-25 | Control device for recirculation of exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643257A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031254U (en) * | 1989-05-29 | 1991-01-09 | ||
| US8203728B2 (en) | 2006-10-31 | 2012-06-19 | Fuji Xerox Co., Ltd. | Print device, print method, print program recording medium, print data production device, print data production method, and print data production program recording medium |
| JP2021067178A (en) * | 2019-10-17 | 2021-04-30 | トヨタ自動車株式会社 | Engine device |
-
1987
- 1987-06-25 JP JP62158703A patent/JPS643257A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031254U (en) * | 1989-05-29 | 1991-01-09 | ||
| US8203728B2 (en) | 2006-10-31 | 2012-06-19 | Fuji Xerox Co., Ltd. | Print device, print method, print program recording medium, print data production device, print data production method, and print data production program recording medium |
| JP2021067178A (en) * | 2019-10-17 | 2021-04-30 | トヨタ自動車株式会社 | Engine device |
| US11499510B2 (en) | 2019-10-17 | 2022-11-15 | Toyota Jidosha Kabushiki Kaisha | Engine system and method of controlling the engine system |
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