JPS5618720A - Detector for quantity of returned exhaust gas of engine - Google Patents
Detector for quantity of returned exhaust gas of engineInfo
- Publication number
- JPS5618720A JPS5618720A JP9410079A JP9410079A JPS5618720A JP S5618720 A JPS5618720 A JP S5618720A JP 9410079 A JP9410079 A JP 9410079A JP 9410079 A JP9410079 A JP 9410079A JP S5618720 A JPS5618720 A JP S5618720A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- primary air
- hot wire
- returned exhaust
- passage
- 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
- Measuring Volume Flow (AREA)
Abstract
PURPOSE: To prevent the fall in detection accuracy and the contamination of a hot wire, by installing the hot wire in a primary air feed passage, the primary air flow rate of which varies depending on the quantity of returned exhaust gas of an engine, to detect the quantity of the returned exhaust gas.
CONSTITUTION: A primary air feed passage 9 is provided so that primary air which varies in inverse proportion to the quantity of returned exhaust gas is supplied to an intake passage 1. A hot wire 11 is provided in the passage 9 to detect the quantity of the primary air which flows through the passage. The quantity of returned exhaust gas is indirectly measured by the detection of the flow rate of the primary air without bringing the hot wire 11 into contact with the exhaust gas. The measured quantity of returned exhaust gas is feedbacked to control the quantity to a command. As a result, the fall in the detection accuracy due to the temperature change of the exhaust gas caused by the contact of the hot wire with the returned exhaust gas and the contamination of the hot wire are prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9410079A JPS5618720A (en) | 1979-07-23 | 1979-07-23 | Detector for quantity of returned exhaust gas of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9410079A JPS5618720A (en) | 1979-07-23 | 1979-07-23 | Detector for quantity of returned exhaust gas of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5618720A true JPS5618720A (en) | 1981-02-21 |
Family
ID=14101019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9410079A Pending JPS5618720A (en) | 1979-07-23 | 1979-07-23 | Detector for quantity of returned exhaust gas of engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5618720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0232216A (en) * | 1988-07-22 | 1990-02-02 | Tokyo Keiso Co Ltd | Method and device for measuring flow rate of gas containing condensing component and mist |
-
1979
- 1979-07-23 JP JP9410079A patent/JPS5618720A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0232216A (en) * | 1988-07-22 | 1990-02-02 | Tokyo Keiso Co Ltd | Method and device for measuring flow rate of gas containing condensing component and mist |
| JP2786203B2 (en) * | 1988-07-22 | 1998-08-13 | 東京計装株式会社 | Method and apparatus for measuring flow rate of gas containing condensable components and mist |
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