JPS5776420A - Knocking detector for internal combustion engine - Google Patents

Knocking detector for internal combustion engine

Info

Publication number
JPS5776420A
JPS5776420A JP15253880A JP15253880A JPS5776420A JP S5776420 A JPS5776420 A JP S5776420A JP 15253880 A JP15253880 A JP 15253880A JP 15253880 A JP15253880 A JP 15253880A JP S5776420 A JPS5776420 A JP S5776420A
Authority
JP
Japan
Prior art keywords
housing
vibrator
tuning bar
knocking
flexible
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
JP15253880A
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 JP15253880A priority Critical patent/JPS5776420A/en
Publication of JPS5776420A publication Critical patent/JPS5776420A/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

Abstract

PURPOSE:To simplify the circuit of the titled detector and reduce its cost without the use of a band pass filter by using a flexible tuning bar vibrator to resonate the vibrator only with knocking frequency. CONSTITUTION:A housing 1 is fitted to the body of an internal combustion engine through a screw part 1a and vibrated uniformly together with the body. A flexible tuning bar vibrator 2 is supported and fixed on the lid of the housing by supporting members 4a, 4b. Electromechanical transducers 3a, 3b with piezoelectricity are connected to the flexible tuning vibrator 2 and also connected to a terminal 6 through a lead wire 7. The lid of the housing is provided with steps and wound to be fixed at the opening edge part 1b of the cuplike housing. Vibration at the knocking of the engine is transmitted to the housing 1 and lid 5 is also vibrated uniformly with the housing to generated flexible resonance in the tuning bar vibrator 2. The tuning bar vibrator 2 is produced so as to be almost equal to the oscillation frequency at knocking. The electromechanical transducers 3a, 3b connected to the tuning bar vibrator 2 receive distortion and generate an electric signal, which is taken out to an external device through the lead wire 7.
JP15253880A 1980-10-30 1980-10-30 Knocking detector for internal combustion engine Pending JPS5776420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15253880A JPS5776420A (en) 1980-10-30 1980-10-30 Knocking detector for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15253880A JPS5776420A (en) 1980-10-30 1980-10-30 Knocking detector for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5776420A true JPS5776420A (en) 1982-05-13

Family

ID=15542628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15253880A Pending JPS5776420A (en) 1980-10-30 1980-10-30 Knocking detector for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5776420A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5590822A (en) * 1978-12-29 1980-07-09 Toyota Motor Corp Knocking sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5590822A (en) * 1978-12-29 1980-07-09 Toyota Motor Corp Knocking sensor

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