JPS56147032A - Measuring device for maximum value of pressure in cylinder - Google Patents
Measuring device for maximum value of pressure in cylinderInfo
- 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
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.
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)
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 |
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 |
-
1980
- 1980-04-16 JP JP4916980A patent/JPS56147032A/en active Pending
Cited By (4)
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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