JPS5698615A - Sucked air volume measurement device - Google Patents

Sucked air volume measurement device

Info

Publication number
JPS5698615A
JPS5698615A JP164580A JP164580A JPS5698615A JP S5698615 A JPS5698615 A JP S5698615A JP 164580 A JP164580 A JP 164580A JP 164580 A JP164580 A JP 164580A JP S5698615 A JPS5698615 A JP S5698615A
Authority
JP
Japan
Prior art keywords
air volume
sucked air
vortex
frequency
wave
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.)
Granted
Application number
JP164580A
Other languages
Japanese (ja)
Other versions
JPS6256963B2 (en
Inventor
Hatsuo Nagaishi
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 JP164580A priority Critical patent/JPS5698615A/en
Publication of JPS5698615A publication Critical patent/JPS5698615A/en
Publication of JPS6256963B2 publication Critical patent/JPS6256963B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To eliminate a measurement error even in an operating region where a suction pulsation is signification and improve the precision of an air/fuel ratio control, by detecting a regular wave of short relative period correctly proportional to a flow and performing arithmetic operation of sucked air volume. CONSTITUTION:A vortex detection circuit 6 which outputs a voltage value corresponding to a pressure change following the generation of a vortex and a karman's vortex street generating element 3 arranged in a suction passage upstreams of a throttle valve are provided and sucked air volume is calculated on the basis of the frequency of this detected signal. In this case, a detection circuit 8 for a change in the frequency detected wave by the Karman's vortex stream is provided, so that arithmetic operation for a sucked air volume is carried out based on only the detection frequency of a relatively short period wave portion.
JP164580A 1980-01-10 1980-01-10 Sucked air volume measurement device Granted JPS5698615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP164580A JPS5698615A (en) 1980-01-10 1980-01-10 Sucked air volume measurement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP164580A JPS5698615A (en) 1980-01-10 1980-01-10 Sucked air volume measurement device

Publications (2)

Publication Number Publication Date
JPS5698615A true JPS5698615A (en) 1981-08-08
JPS6256963B2 JPS6256963B2 (en) 1987-11-28

Family

ID=11507248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP164580A Granted JPS5698615A (en) 1980-01-10 1980-01-10 Sucked air volume measurement device

Country Status (1)

Country Link
JP (1) JPS5698615A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209641A (en) * 1984-03-31 1985-10-22 Fujitsu Ten Ltd Fuel injection apparatus for internal-combustion engine
JPS611170U (en) * 1984-06-08 1986-01-07 海上電機株式会社 Ship speed measuring device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255558A (en) * 1975-10-30 1977-05-07 Hokushin Electric Works Apparatus for compensating pulse signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255558A (en) * 1975-10-30 1977-05-07 Hokushin Electric Works Apparatus for compensating pulse signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209641A (en) * 1984-03-31 1985-10-22 Fujitsu Ten Ltd Fuel injection apparatus for internal-combustion engine
JPS611170U (en) * 1984-06-08 1986-01-07 海上電機株式会社 Ship speed measuring device

Also Published As

Publication number Publication date
JPS6256963B2 (en) 1987-11-28

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