JPS57211031A - Cooling water fault detector serving as knocking detector - Google Patents

Cooling water fault detector serving as knocking detector

Info

Publication number
JPS57211031A
JPS57211031A JP9559281A JP9559281A JPS57211031A JP S57211031 A JPS57211031 A JP S57211031A JP 9559281 A JP9559281 A JP 9559281A JP 9559281 A JP9559281 A JP 9559281A JP S57211031 A JPS57211031 A JP S57211031A
Authority
JP
Japan
Prior art keywords
knocking
cooling water
water
frequency component
output signal
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.)
Granted
Application number
JP9559281A
Other languages
Japanese (ja)
Other versions
JPS6322253B2 (en
Inventor
Yujiro Oshima
Ookazu Asai
Hiroji Tokoro
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 Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs 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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Priority to JP9559281A priority Critical patent/JPS57211031A/en
Priority to US06/326,524 priority patent/US4483179A/en
Publication of JPS57211031A publication Critical patent/JPS57211031A/en
Publication of JPS6322253B2 publication Critical patent/JPS6322253B2/ja
Granted 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
    • 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 detect independently the faults of knocking water and cooling water, by separating the output signal of a pressure gauge that detects the pressure change of the cooling water into a high frequency component based on the knocking and a low frequency component based on a water pump. CONSTITUTION:When the rotary driving of a water pump stops, the pressure vibration of a low frequency caused in cooling water in a water room 1 disappears. Then a low frequency component contained in the output signal of a pressure gauge 4 and based on the rotary driving of the water pump disappears, and the signal passing through a low pass filter 16 for detection of a fault of the cooling water does not exist any more. Thus an alarm is produced by a cooling water fault alarming circuit. In case the knocking arises in a combustion chamber, the pressure vibration of high frequency is caused. Then a high-frequency component of the output signal of the gauge 4 and based on the knocking passes through a high-band filter 15 for detection of knocking. The knocking is detected by a knocking control circuit, and the ignition time of an engine is controlled.
JP9559281A 1980-12-03 1981-06-19 Cooling water fault detector serving as knocking detector Granted JPS57211031A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9559281A JPS57211031A (en) 1981-06-19 1981-06-19 Cooling water fault detector serving as knocking detector
US06/326,524 US4483179A (en) 1980-12-03 1981-12-02 Method of and device for detection of knocking for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9559281A JPS57211031A (en) 1981-06-19 1981-06-19 Cooling water fault detector serving as knocking detector

Publications (2)

Publication Number Publication Date
JPS57211031A true JPS57211031A (en) 1982-12-24
JPS6322253B2 JPS6322253B2 (en) 1988-05-11

Family

ID=14141841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9559281A Granted JPS57211031A (en) 1980-12-03 1981-06-19 Cooling water fault detector serving as knocking detector

Country Status (1)

Country Link
JP (1) JPS57211031A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61107127A (en) * 1984-10-26 1986-05-26 テキサス　インスツルメンツ　インコーポレイテツド Pressure transmission device for cylinder for internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61107127A (en) * 1984-10-26 1986-05-26 テキサス　インスツルメンツ　インコーポレイテツド Pressure transmission device for cylinder for internal combustion engine

Also Published As

Publication number Publication date
JPS6322253B2 (en) 1988-05-11

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