JPS57108729A - Knocking detector for internal combustion engine - Google Patents

Knocking detector for internal combustion engine

Info

Publication number
JPS57108729A
JPS57108729A JP18627480A JP18627480A JPS57108729A JP S57108729 A JPS57108729 A JP S57108729A JP 18627480 A JP18627480 A JP 18627480A JP 18627480 A JP18627480 A JP 18627480A JP S57108729 A JPS57108729 A JP S57108729A
Authority
JP
Japan
Prior art keywords
knocking
diaphragm
combustion engine
internal combustion
pressure corresponding
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
JP18627480A
Other languages
Japanese (ja)
Inventor
Tadashi Hattori
Masanori Hanaoka
Yukihide Hashiguchi
Yoshinori Otsuka
Kimiaki Yamaguchi
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.)
Toyota Motor Corp
Soken Inc
Original Assignee
Nippon Soken Inc
Toyota Motor 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 Nippon Soken Inc, Toyota Motor Corp filed Critical Nippon Soken Inc
Priority to JP18627480A priority Critical patent/JPS57108729A/en
Priority to US06/335,284 priority patent/US4424705A/en
Publication of JPS57108729A publication Critical patent/JPS57108729A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
    • G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
    • G01L23/223—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines using magnetic or magnetostrictive means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/02—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Abstract

PURPOSE:To detect knocking with high accuracy, by detecting only the pulsating pressure corresponding to the knocking in the AC type response to the working of a diaphragm to the cooling water pressure. CONSTITUTION:A hemispherical magnetic diaphragm 202 works with high responsibility by the composite pressure of the pulsating pressure corresponding to knocking and the static pressure. Accordingly, a gap G between the diaphragm 202 and a center magnetic path 206 varies. Then a current is produced at a coil 207 in accordance with the change of the magnetic flux, and only the pulsating pressure corresponding to the knocking is detected in the AC type response to the working of the diaphragm 202. In such way, the knocking is detected with high accuracy.
JP18627480A 1980-12-26 1980-12-26 Knocking detector for internal combustion engine Pending JPS57108729A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18627480A JPS57108729A (en) 1980-12-26 1980-12-26 Knocking detector for internal combustion engine
US06/335,284 US4424705A (en) 1980-12-26 1981-12-28 Engine knock sensing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18627480A JPS57108729A (en) 1980-12-26 1980-12-26 Knocking detector for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57108729A true JPS57108729A (en) 1982-07-06

Family

ID=16185424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18627480A Pending JPS57108729A (en) 1980-12-26 1980-12-26 Knocking detector for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57108729A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016527489A (en) * 2013-06-27 2016-09-08 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Device for detecting combustion chamber pressure in an internal combustion engine
JP2018159708A (en) * 2017-03-23 2018-10-11 積水化学工業株式会社 Load detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016527489A (en) * 2013-06-27 2016-09-08 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Device for detecting combustion chamber pressure in an internal combustion engine
JP2018159708A (en) * 2017-03-23 2018-10-11 積水化学工業株式会社 Load detector

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