JPS5551311A - Detector for intake air quantity - Google Patents

Detector for intake air quantity

Info

Publication number
JPS5551311A
JPS5551311A JP12408378A JP12408378A JPS5551311A JP S5551311 A JPS5551311 A JP S5551311A JP 12408378 A JP12408378 A JP 12408378A JP 12408378 A JP12408378 A JP 12408378A JP S5551311 A JPS5551311 A JP S5551311A
Authority
JP
Japan
Prior art keywords
path
flowmeter
karman vortex
air current
flow amount
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
Application number
JP12408378A
Other languages
Japanese (ja)
Inventor
Takeshi Fujishiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP12408378A priority Critical patent/JPS5551311A/en
Publication of JPS5551311A publication Critical patent/JPS5551311A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE: To deliver the pulse signal of the frequency proportional to the mass flow amount directly from the Karman vortex flowmeter by varying the velocity of the air current passing through the Karman vortex flowmeter according to the density of the air.
CONSTITUTION: The intake air path 1 of the internal combustion engine is divided to main system path 3 and side system path 4 by partition plate 3. Harmonica-type rectifier 5 which corrects the disturbance of the intake air plus Karman vortex flowmeter 6 are installed at path 3. Flowmeter 6, incorporating pierced hole 7 opening vertically to the air current direction to the eddy generator plus the hot wire provided in hole 7, detects the air current caused at hole 7 every generation of the Karman vortex in the form of the resistance change of the hot wire. And flowmeter 6 delivers the pulse signal of the frequency proportional to the velocity of the air current flowing to path 3. On the other hand, flap 8 is provided at path 4 to control the flow amount. And if the opening degree of flap 8 is controlled according to the change of the density, the signal of flowmeter 6 can be used directly in the form of the mass flow amount signal.
COPYRIGHT: (C)1980,JPO&Japio
JP12408378A 1978-10-11 1978-10-11 Detector for intake air quantity Pending JPS5551311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12408378A JPS5551311A (en) 1978-10-11 1978-10-11 Detector for intake air quantity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12408378A JPS5551311A (en) 1978-10-11 1978-10-11 Detector for intake air quantity

Publications (1)

Publication Number Publication Date
JPS5551311A true JPS5551311A (en) 1980-04-15

Family

ID=14876499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12408378A Pending JPS5551311A (en) 1978-10-11 1978-10-11 Detector for intake air quantity

Country Status (1)

Country Link
JP (1) JPS5551311A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630484A (en) * 1984-05-31 1986-12-23 Nippondenso Co., Ltd. Mass flowmeter
US4696193A (en) * 1984-12-05 1987-09-29 Nippondenso Co., Ltd. Airflow rate measuring apparatus of Karman vortex type
US5398548A (en) * 1993-02-22 1995-03-21 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630484A (en) * 1984-05-31 1986-12-23 Nippondenso Co., Ltd. Mass flowmeter
US4696193A (en) * 1984-12-05 1987-09-29 Nippondenso Co., Ltd. Airflow rate measuring apparatus of Karman vortex type
US5398548A (en) * 1993-02-22 1995-03-21 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter

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