JPS56159556A - Exhaust gas recirculating rate measuring system in internal-combustion engine - Google Patents
Exhaust gas recirculating rate measuring system in internal-combustion engineInfo
- Publication number
- JPS56159556A JPS56159556A JP6294680A JP6294680A JPS56159556A JP S56159556 A JPS56159556 A JP S56159556A JP 6294680 A JP6294680 A JP 6294680A JP 6294680 A JP6294680 A JP 6294680A JP S56159556 A JPS56159556 A JP S56159556A
- Authority
- JP
- Japan
- Prior art keywords
- egr rate
- circuit
- operated
- crank angle
- internal
- 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
Abstract
PURPOSE: To enable to measure the EGR rate in stable by a method wherein the internal pressures of respective cylinders are extracted at each proper point before or after the upper dead point of a crank angle to obtain a pressure ratio thereof and the EGR rate is determined from the characteristic of this pressure ratio and the EGR rate.
CONSTITUTION: The pressure in a combustion chamber is detected by a pressure sensor 10 while the crank angle is detected by a crank angle sensor 12 and the values of the pressures Pa, Pb at an angle α before or after the upper dead point are converted in an A/D convertor 11 to memorize them into a memory 13. The value of Pa/Pb is operated at every cycle in a division circuit 14 from the signal memorized in the memory circuit 13 to determine the EGR rate by an EGR rate determining circuit 15 based on the operated value. Various signals regarding to the conditions of the engine operation are inputted into this circuit 15 except the operated values of Pa/Pb, and data for determining the EGR rate are utilized to improve the accuracy of the measurement by selecting from these various signals in accordance with the necessities thereof.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6294680A JPS56159556A (en) | 1980-05-13 | 1980-05-13 | Exhaust gas recirculating rate measuring system in internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6294680A JPS56159556A (en) | 1980-05-13 | 1980-05-13 | Exhaust gas recirculating rate measuring system in internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56159556A true JPS56159556A (en) | 1981-12-08 |
Family
ID=13214973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6294680A Pending JPS56159556A (en) | 1980-05-13 | 1980-05-13 | Exhaust gas recirculating rate measuring system in internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56159556A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62150058A (en) * | 1985-10-29 | 1987-07-04 | ゼネラル モ−タ−ズ コ−ポレ−シヨン | Combustion control for internal combustion engine |
| WO2011141994A1 (en) * | 2010-05-11 | 2011-11-17 | トヨタ自動車株式会社 | Method for specifying egr rate in internal combustion engine, and control device for internal combustion engine |
-
1980
- 1980-05-13 JP JP6294680A patent/JPS56159556A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62150058A (en) * | 1985-10-29 | 1987-07-04 | ゼネラル モ−タ−ズ コ−ポレ−シヨン | Combustion control for internal combustion engine |
| WO2011141994A1 (en) * | 2010-05-11 | 2011-11-17 | トヨタ自動車株式会社 | Method for specifying egr rate in internal combustion engine, and control device for internal combustion engine |
| CN102893011A (en) * | 2010-05-11 | 2013-01-23 | 丰田自动车株式会社 | Method for specifying egr rate in internal combustion engine, and control device for internal combustion engine |
| JP5413506B2 (en) * | 2010-05-11 | 2014-02-12 | トヨタ自動車株式会社 | Method for specifying EGR rate in internal combustion engine and control device for internal combustion engine |
| US9399958B2 (en) | 2010-05-11 | 2016-07-26 | Toyota Jidosha Kabushiki Kaisha | Specifying method of EGR rate in internal combustion engine and control apparatus of internal combustion engine |
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