JPS57153235A - Knocking detector for internal combustion engine - Google Patents
Knocking detector for internal combustion engineInfo
- Publication number
- JPS57153235A JPS57153235A JP4005281A JP4005281A JPS57153235A JP S57153235 A JPS57153235 A JP S57153235A JP 4005281 A JP4005281 A JP 4005281A JP 4005281 A JP4005281 A JP 4005281A JP S57153235 A JPS57153235 A JP S57153235A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- pressure sensor
- stuck
- pressure
- deformed
- 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
- G01L23/22—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
PURPOSE:To detect only components of water pressure pulsation with a high precision, by making a metallic diaphragm, which is deformed in accordance with the pressure pulsation of cooling water, thin in a part, where a pressure sensor is stuck, to increase this deformation of the diaphragm. CONSTITUTION:A pressure sensor 9 consisting of partially a piezoelectric material is stuck to the center of the upper face of a diaphragm 8 by a conductive adhesive or the like, and the thickness of a part 8a where the pressure sensor 9 is stuck of the metallic diaphragm 8 is smaller than that of the other parts 8b. Thus, when the metallic diaphragm 8 is deformed in accordance with water pressure pulsation generated in cooling water by knocking of an engine, the whole of the metallic diaphragm is deformed smoothly and greatly to give a high oscillation pressure to the pressure sensor 9, and a stable output signal is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4005281A JPS57153235A (en) | 1981-03-18 | 1981-03-18 | Knocking detector for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4005281A JPS57153235A (en) | 1981-03-18 | 1981-03-18 | Knocking detector for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57153235A true JPS57153235A (en) | 1982-09-21 |
Family
ID=12570137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4005281A Pending JPS57153235A (en) | 1981-03-18 | 1981-03-18 | Knocking detector for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57153235A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01501963A (en) * | 1986-03-27 | 1989-07-06 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | pressure sensor |
-
1981
- 1981-03-18 JP JP4005281A patent/JPS57153235A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01501963A (en) * | 1986-03-27 | 1989-07-06 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | pressure sensor |
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