DE2944647C2 - - Google Patents
Info
- Publication number
- DE2944647C2 DE2944647C2 DE19792944647 DE2944647A DE2944647C2 DE 2944647 C2 DE2944647 C2 DE 2944647C2 DE 19792944647 DE19792944647 DE 19792944647 DE 2944647 A DE2944647 A DE 2944647A DE 2944647 C2 DE2944647 C2 DE 2944647C2
- Authority
- DE
- Germany
- 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.)
- Expired
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)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792944647 DE2944647A1 (de) | 1979-11-06 | 1979-11-06 | Sensor zur erfassung der beim klopfen einer brennkraftmaschine auftretenden schwingungen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792944647 DE2944647A1 (de) | 1979-11-06 | 1979-11-06 | Sensor zur erfassung der beim klopfen einer brennkraftmaschine auftretenden schwingungen |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2944647A1 DE2944647A1 (de) | 1981-05-14 |
DE2944647C2 true DE2944647C2 (US06262066-20010717-C00424.png) | 1987-03-12 |
Family
ID=6085187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792944647 Granted DE2944647A1 (de) | 1979-11-06 | 1979-11-06 | Sensor zur erfassung der beim klopfen einer brennkraftmaschine auftretenden schwingungen |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2944647A1 (US06262066-20010717-C00424.png) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4417132A1 (de) * | 1994-05-17 | 1995-11-23 | Ibm | Resonanter Meßwertaufnehmer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4371804A (en) * | 1981-07-31 | 1983-02-01 | General Motors Corporation | Piezoelectric knock sensor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE445470C (de) * | 1925-02-19 | 1927-06-10 | Viktor Blaess Dr Ing | Resonanzschwingungsmesser |
DE746666C (de) * | 1940-05-27 | 1944-08-16 | Versuchsanstalt Fuer Luftfahrt | Indikator |
DE870041C (de) * | 1950-06-01 | 1953-03-09 | Sodet Soc D Echanges Tech | Vorrichtung zur Messung mechanischer Verformungen |
DE2801969C2 (de) * | 1978-01-18 | 1982-11-04 | Robert Bosch Gmbh, 7000 Stuttgart | Sensor für Schwingungen |
-
1979
- 1979-11-06 DE DE19792944647 patent/DE2944647A1/de active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4417132A1 (de) * | 1994-05-17 | 1995-11-23 | Ibm | Resonanter Meßwertaufnehmer |
Also Published As
Publication number | Publication date |
---|---|
DE2944647A1 (de) | 1981-05-14 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8120 | Willingness to grant licenses paragraph 23 | ||
D2 | Grant after examination | ||
8363 | Opposition against the patent | ||
8365 | Fully valid after opposition proceedings | ||
8339 | Ceased/non-payment of the annual fee |