JPS5779262A - Knocking detector - Google Patents

Knocking detector

Info

Publication number
JPS5779262A
JPS5779262A JP15532980A JP15532980A JPS5779262A JP S5779262 A JPS5779262 A JP S5779262A JP 15532980 A JP15532980 A JP 15532980A JP 15532980 A JP15532980 A JP 15532980A JP S5779262 A JPS5779262 A JP S5779262A
Authority
JP
Japan
Prior art keywords
knocking
ionic current
ion probe
ionic
detect
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
JP15532980A
Other languages
Japanese (ja)
Inventor
Tamotsu Iijima
Shizuo Ishizawa
Takashi Fujii
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP15532980A priority Critical patent/JPS5779262A/en
Publication of JPS5779262A publication Critical patent/JPS5779262A/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
    • G01L23/225—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 circuit arrangements therefor
    • 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 detect a knocking without extraneous influences such as an engine's chaterring by detecting an ionic current.
CONSTITUTION: An ignition plug 2 and an ion probe 3 are disposed oppositely on a line passing through a center of a combustion chamber. For detecting a ionic condition, an ionic current level is inputted to a knocking distinguishing circuit. In the absence of a knocking, the ionic current shows a peak of a relatively moderate curved line in the region of the maximum burning pressure. At an occurance of the knocking, because of a momentary rise of the ionic current, the ion probe 3 exhibits a stiff peak of the current. A comparison of an output of the ion probe 3 with a preset level may detect a knocking, thereby having no extraneous influence on the detection.
COPYRIGHT: (C)1982,JPO&Japio
JP15532980A 1980-11-05 1980-11-05 Knocking detector Pending JPS5779262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15532980A JPS5779262A (en) 1980-11-05 1980-11-05 Knocking detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15532980A JPS5779262A (en) 1980-11-05 1980-11-05 Knocking detector

Publications (1)

Publication Number Publication Date
JPS5779262A true JPS5779262A (en) 1982-05-18

Family

ID=15603503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15532980A Pending JPS5779262A (en) 1980-11-05 1980-11-05 Knocking detector

Country Status (1)

Country Link
JP (1) JPS5779262A (en)

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