JPS57153235A - Knocking detector for internal combustion engine - Google Patents

Knocking detector for internal combustion engine

Info

Publication number
JPS57153235A
JPS57153235A JP4005281A JP4005281A JPS57153235A JP S57153235 A JPS57153235 A JP S57153235A JP 4005281 A JP4005281 A JP 4005281A JP 4005281 A JP4005281 A JP 4005281A JP S57153235 A JPS57153235 A JP S57153235A
Authority
JP
Japan
Prior art keywords
diaphragm
pressure sensor
stuck
pressure
deformed
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
JP4005281A
Other languages
Japanese (ja)
Inventor
Makoto Ozaki
Tadashi Hattori
Yoshinori Otsuka
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.)
Soken Inc
Original Assignee
Nippon Soken Inc
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 filed Critical Nippon Soken Inc
Priority to JP4005281A priority Critical patent/JPS57153235A/en
Publication of JPS57153235A publication Critical patent/JPS57153235A/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
    • G01L23/222—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 piezoelectric devices

Landscapes

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

Abstract

PURPOSE:To detect only components of water pressure pulsation with a high precision, by making a metallic diaphragm, which is deformed in accordance with the pressure pulsation of cooling water, thin in a part, where a pressure sensor is stuck, to increase this deformation of the diaphragm. CONSTITUTION:A pressure sensor 9 consisting of partially a piezoelectric material is stuck to the center of the upper face of a diaphragm 8 by a conductive adhesive or the like, and the thickness of a part 8a where the pressure sensor 9 is stuck of the metallic diaphragm 8 is smaller than that of the other parts 8b. Thus, when the metallic diaphragm 8 is deformed in accordance with water pressure pulsation generated in cooling water by knocking of an engine, the whole of the metallic diaphragm is deformed smoothly and greatly to give a high oscillation pressure to the pressure sensor 9, and a stable output signal is obtained.
JP4005281A 1981-03-18 1981-03-18 Knocking detector for internal combustion engine Pending JPS57153235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4005281A JPS57153235A (en) 1981-03-18 1981-03-18 Knocking detector for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4005281A JPS57153235A (en) 1981-03-18 1981-03-18 Knocking detector for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57153235A true JPS57153235A (en) 1982-09-21

Family

ID=12570137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4005281A Pending JPS57153235A (en) 1981-03-18 1981-03-18 Knocking detector for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57153235A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01501963A (en) * 1986-03-27 1989-07-06 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 pressure sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01501963A (en) * 1986-03-27 1989-07-06 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 pressure sensor

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