JPS56147032A - Measuring device for maximum value of pressure in cylinder - Google Patents

Measuring device for maximum value of pressure in cylinder

Info

Publication number
JPS56147032A
JPS56147032A JP4916980A JP4916980A JPS56147032A JP S56147032 A JPS56147032 A JP S56147032A JP 4916980 A JP4916980 A JP 4916980A JP 4916980 A JP4916980 A JP 4916980A JP S56147032 A JPS56147032 A JP S56147032A
Authority
JP
Japan
Prior art keywords
pressure
value
cylinder
peak
voltage
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
JP4916980A
Other languages
Japanese (ja)
Inventor
Fusao Hayashi
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.)
Automob Antipollut & Saf Res Center
Automobile Appliance Anti Pollution and Safety Research Center
Original Assignee
Automob Antipollut & Saf Res Center
Automobile Appliance Anti Pollution and Safety Research Center
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 Automob Antipollut & Saf Res Center, Automobile Appliance Anti Pollution and Safety Research Center filed Critical Automob Antipollut & Saf Res Center
Priority to JP4916980A priority Critical patent/JPS56147032A/en
Publication of JPS56147032A publication Critical patent/JPS56147032A/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
    • G01L23/08—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 operated electrically

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To measure the maximum pressure in a cylinder highly accurately without the effect of pressure drift or the like by converting the detected DC signal corresponding to the pressure to AC voltage and determining peak-to-peak value. CONSTITUTION:The pressure in the cylinder of an engine 1 is detected with a pressure detector 2, and the detector 2 generates the DC signal corresponding to the pressure. This signal is converted to AC voltage by an AV converter 5, and the positive value and negative value thereof are held respectively in positive-, negative voltage holders 6, 7 which are controlled by monostable multis 12, 13. These are processed by a differential amplifier 8, and the peak-to-peak value is held in a sample holder 9 which is controlled by the mluti 12, by which the maximum pressure value is determined. By this simple constitution, the highly accurate maximum pressure which does not receive the influence of gentle pressure changes owing to pressure drift and atmospheric pressure change is measured.
JP4916980A 1980-04-16 1980-04-16 Measuring device for maximum value of pressure in cylinder Pending JPS56147032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4916980A JPS56147032A (en) 1980-04-16 1980-04-16 Measuring device for maximum value of pressure in cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4916980A JPS56147032A (en) 1980-04-16 1980-04-16 Measuring device for maximum value of pressure in cylinder

Publications (1)

Publication Number Publication Date
JPS56147032A true JPS56147032A (en) 1981-11-14

Family

ID=12823564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4916980A Pending JPS56147032A (en) 1980-04-16 1980-04-16 Measuring device for maximum value of pressure in cylinder

Country Status (1)

Country Link
JP (1) JPS56147032A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027761A (en) * 1983-07-27 1985-02-12 Nippon Soken Inc Measurement of variation in output of internal- combustion engine
JP2007185742A (en) * 2006-01-13 2007-07-26 Nachi Fujikoshi Corp Shaving cutter for finishing internal gear before hardening
JP2007185722A (en) * 2006-01-11 2007-07-26 Nachi Fujikoshi Corp Shaving cutter for finishing high hardness internal gear

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027761A (en) * 1983-07-27 1985-02-12 Nippon Soken Inc Measurement of variation in output of internal- combustion engine
JPH0522065B2 (en) * 1983-07-27 1993-03-26 Nippon Jidosha Buhin Sogo Kenkyusho Kk
JP2007185722A (en) * 2006-01-11 2007-07-26 Nachi Fujikoshi Corp Shaving cutter for finishing high hardness internal gear
JP2007185742A (en) * 2006-01-13 2007-07-26 Nachi Fujikoshi Corp Shaving cutter for finishing internal gear before hardening

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