JPS5793215A - Knocking detector for internal combustion engine - Google Patents

Knocking detector for internal combustion engine

Info

Publication number
JPS5793215A
JPS5793215A JP17013580A JP17013580A JPS5793215A JP S5793215 A JPS5793215 A JP S5793215A JP 17013580 A JP17013580 A JP 17013580A JP 17013580 A JP17013580 A JP 17013580A JP S5793215 A JPS5793215 A JP S5793215A
Authority
JP
Japan
Prior art keywords
knocking
frequency
disc vibrator
housing body
time
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
JP17013580A
Other languages
Japanese (ja)
Inventor
Shinichi Hayashizaki
Yukio Saito
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.)
SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK
SENDAI SEIMITSU ZAIRYO KENKYUS
Seiko Electronic Components Ltd
Original Assignee
SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK
SENDAI SEIMITSU ZAIRYO KENKYUS
Seiko Electronic Components 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 SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK, SENDAI SEIMITSU ZAIRYO KENKYUS, Seiko Electronic Components Ltd filed Critical SENDAI SEIMITSU ZAIRIYOU KENKYUSHO KK
Priority to JP17013580A priority Critical patent/JPS5793215A/en
Publication of JPS5793215A publication Critical patent/JPS5793215A/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

Abstract

PURPOSE:To take out only vibrations near the frequency of vibrations caused by knocking without using a band-pass filter, by using a disc vibrator and making the same resonate with the frequency of knocking. CONSTITUTION:The detector is fitted to the main body of an engine by the screw part 1a of a housing body 1 and, therefore, the vibrations of the engine at the time of knocking thereof are transmitted to the housing body 1 at the time of detection. Since the flexible disc vibrator is fixed to and supported by the convex part 1c of the housing body, by welding or the like, at a place other than a node point, the convex part 1c serves as a driving point for the flexible resonance of the disc vibrator 2. The flexible disc vibrator 2 is prepared to have a frequency nearly equal to the frequency of vibration at the time of knocking. A mechanical-electrical transducer 3 bonded to the disc vibrator is given distortion and generates an electric signal thereby, which is taken out for an outside electric apparatus from a terminal 6 formed of a conductor through lead wires 7a and 7b.
JP17013580A 1980-12-02 1980-12-02 Knocking detector for internal combustion engine Pending JPS5793215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17013580A JPS5793215A (en) 1980-12-02 1980-12-02 Knocking detector for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17013580A JPS5793215A (en) 1980-12-02 1980-12-02 Knocking detector for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5793215A true JPS5793215A (en) 1982-06-10

Family

ID=15899303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17013580A Pending JPS5793215A (en) 1980-12-02 1980-12-02 Knocking detector for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5793215A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218870A (en) * 1990-04-27 1993-06-15 Mitsubishi Denki K.K. Vibration sensor including a reduced capacity lower portion for maintaining airtightness and enhancing reliability
EP0671612A1 (en) * 1993-08-03 1995-09-13 Nippondenso Co., Ltd. Knock sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS543186B2 (en) * 1976-08-31 1979-02-19
JPS5687824A (en) * 1979-12-17 1981-07-16 Teretsukusu Komiyunikeeshiyonz Piezoelectric transducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS543186B2 (en) * 1976-08-31 1979-02-19
JPS5687824A (en) * 1979-12-17 1981-07-16 Teretsukusu Komiyunikeeshiyonz Piezoelectric transducer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218870A (en) * 1990-04-27 1993-06-15 Mitsubishi Denki K.K. Vibration sensor including a reduced capacity lower portion for maintaining airtightness and enhancing reliability
US5323639A (en) * 1990-04-27 1994-06-28 Mitsubishi Denki Kabushiki Kaisha Vibration sensor
EP0671612A1 (en) * 1993-08-03 1995-09-13 Nippondenso Co., Ltd. Knock sensor
EP0671612A4 (en) * 1993-08-03 1996-02-07 Nippon Denso Co Knock sensor.

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