JPS5575544A - Apparatus for measuring quantity of intake air in internal combustion engine - Google Patents

Apparatus for measuring quantity of intake air in internal combustion engine

Info

Publication number
JPS5575544A
JPS5575544A JP14940378A JP14940378A JPS5575544A JP S5575544 A JPS5575544 A JP S5575544A JP 14940378 A JP14940378 A JP 14940378A JP 14940378 A JP14940378 A JP 14940378A JP S5575544 A JPS5575544 A JP S5575544A
Authority
JP
Japan
Prior art keywords
intake air
cylindrical member
disposed
opening
rearwardly
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
JP14940378A
Other languages
Japanese (ja)
Inventor
Yasuhiko Hosoya
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14940378A priority Critical patent/JPS5575544A/en
Publication of JPS5575544A publication Critical patent/JPS5575544A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/185—Circuit arrangements for generating control signals by measuring intake air flow using a vortex flow sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To prevent that accuracy of measurement be lowered due to pulsation of intake air, by means wherein to detect quantity of intake air by generating Karman vortices and to provide a cylindrical member including a swirl generating section rearwardly of the detecting means. CONSTITUTION:Quantity of intake air is calculated by means of a vortex generating rod 2 disposed in intake-air passage 1 of a diesel engine and ultrasonic-wave oscillator 3, ultrasonic-wave generating means 4, receiver 5 and processing circuit 6 for detecting Karman vortices produced rearwardly of the rod 2. Rearwardly of these detecting means, there is disposed a cylindrical member 9, opening 11 of which is connected tangentially. Further, a communication pipe 7 is disposed at the central portion of cylindrical member 9. The pipe 7 has an opening 12 on the opposite side of opening 11, and the other end portion of pipe 7 is communicated to engine (not shown) via throttle valve 8. With such an arrangement, pulsation of intake air transmitted from engine can be absorbed in the cylindrical member 9.
JP14940378A 1978-11-30 1978-11-30 Apparatus for measuring quantity of intake air in internal combustion engine Pending JPS5575544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14940378A JPS5575544A (en) 1978-11-30 1978-11-30 Apparatus for measuring quantity of intake air in internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14940378A JPS5575544A (en) 1978-11-30 1978-11-30 Apparatus for measuring quantity of intake air in internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5575544A true JPS5575544A (en) 1980-06-06

Family

ID=15474362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14940378A Pending JPS5575544A (en) 1978-11-30 1978-11-30 Apparatus for measuring quantity of intake air in internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5575544A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239627A (en) * 1984-05-09 1985-11-28 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method and device for protecting air measuring mechanism mounted in suction pipe for engine from vibration of air column in suction pipe
US4742710A (en) * 1985-11-02 1988-05-10 Vdo Adolf Schindling Ag Arrangement having an air-mass meter for an internal combustion engine
US4742711A (en) * 1985-11-02 1988-05-10 Vdo Adolf Schindling Ag Arrangement having an air-mass meter for an internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239627A (en) * 1984-05-09 1985-11-28 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method and device for protecting air measuring mechanism mounted in suction pipe for engine from vibration of air column in suction pipe
US4742710A (en) * 1985-11-02 1988-05-10 Vdo Adolf Schindling Ag Arrangement having an air-mass meter for an internal combustion engine
US4742711A (en) * 1985-11-02 1988-05-10 Vdo Adolf Schindling Ag Arrangement having an air-mass meter for an internal combustion engine

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