JPS5589714A - Measuring unit of suctioned air amount for internal combustion engine - Google Patents
Measuring unit of suctioned air amount for internal combustion engineInfo
- Publication number
- JPS5589714A JPS5589714A JP16303778A JP16303778A JPS5589714A JP S5589714 A JPS5589714 A JP S5589714A JP 16303778 A JP16303778 A JP 16303778A JP 16303778 A JP16303778 A JP 16303778A JP S5589714 A JPS5589714 A JP S5589714A
- Authority
- JP
- Japan
- Prior art keywords
- vortex
- exhaust pressure
- suctioned air
- air
- internal combustion
- 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 enable accurate flow detection, by giving exhaust pressure of internal combustion engine to the suction air duct, and restricting the detection error of Karman's vortex flowmeter due to pulsation of suctioned air flow at low speed high load operation range.
CONSTITUTION: A part of exhaust is delivered to the suction air duct 1 with the exhaust pressure vent tube 9. The pulse output having the frequency corresponding to the number of vortex is obtained with the ultrasonic wave generator 4 and receiver 5 for the vortex produced. If the engine is at low speed and high load operation, air flow is pulsive, the number of vortex greater than the actual suctioned air amount is detected and error is caused. Air flow is disturbed by delivering a part of exhaust pressure to the suction tube to control the production of vortex and to enable to make proportional the detected frequency to the amount of air. With the construction above, the suctioned air amount measuring unit for automobiles can be obtained without wear parts and rich in durability.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16303778A JPS5589714A (en) | 1978-12-28 | 1978-12-28 | Measuring unit of suctioned air amount for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16303778A JPS5589714A (en) | 1978-12-28 | 1978-12-28 | Measuring unit of suctioned air amount for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5589714A true JPS5589714A (en) | 1980-07-07 |
Family
ID=15765975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16303778A Pending JPS5589714A (en) | 1978-12-28 | 1978-12-28 | Measuring unit of suctioned air amount for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5589714A (en) |
-
1978
- 1978-12-28 JP JP16303778A patent/JPS5589714A/en active Pending
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