DE2917406A1 - Carbon powder IC engine knock detector - has resistive path in head gasket, bolt and washer, or electrode mounted on head, with insulator - Google Patents
Carbon powder IC engine knock detector - has resistive path in head gasket, bolt and washer, or electrode mounted on head, with insulatorInfo
- Publication number
- DE2917406A1 DE2917406A1 DE2917406A DE2917406A DE2917406A1 DE 2917406 A1 DE2917406 A1 DE 2917406A1 DE 2917406 A DE2917406 A DE 2917406A DE 2917406 A DE2917406 A DE 2917406A DE 2917406 A1 DE2917406 A1 DE 2917406A1
- Authority
- DE
- Germany
- Prior art keywords
- carbon powder
- cylinder head
- resistive path
- head
- pressure
- 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.)
- Withdrawn
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
κ. 544 3κ. 544 3
27.3.1979 Bt/BaMarch 27, 1979 Bt / Ba
ROBERT BOSCH GMBH, 7000 STUTTGART 1 ROBERT BOSCH GMBH, 7000 STUTTGART 1
Druckaufnehmer zur Erfassung der beim Klopfen einer Brennkraftmaschine auftretenden SchwingungenPressure transducer for recording the vibrations that occur when an internal combustion engine knocks
Die Erfindung geht aus von einem Druckaufnehmer nach der Gattung des Hauptanspruchs. Bei klopfender Verbrennung entstehen Druckschwingungen, die sich in der Brennkraftmaschine fortsetzen. Die Schwingungen werden mit Hilfe von Druck-, Kraft- oder Beschleunigungsaufnehmern erfaßt und in einer nachgeschalteten elektrischen Schaltung ausgewertet. Bekannt sind Druckaufnehmer, die z. B. nach dem piezoelektrischen Prinzip arbeiten. Dabei wird ein piezoelektrisches Element an der Brennkraftmaschine befestigt, in dem bei Verformungen, die durch die Druckschwingungen hervorgerufen werden, ein elektrisches Signal ausgelöst wird.The invention is based on a pressure transducer according to the preamble of the main claim. If the combustion knocks pressure vibrations arise that continue in the internal combustion engine. The vibrations will detected with the help of pressure, force or acceleration sensors and in a downstream electrical circuit evaluated. Pressure transducers are known which, for. B. work on the piezoelectric principle. It will a piezoelectric element attached to the internal combustion engine, in which deformations caused by the pressure vibrations caused, an electrical signal is triggered.
030045/0427030045/0427
■r? -' ···! 29■ r? - '···! 29
Der erfindungsgemäße Druckaufnehmer mit den kennzeichnenden Merkmalen des Hauptanspruchs hat gegenüber dem Stand der Technik den Vorteil, daß er eine einfache und billige Lösung zur Erfassung von Druckschwingungen bietet.The pressure transducer according to the invention with the characteristic Features of the main claim has the advantage over the prior art that it is simple and cheap Solution for the detection of pressure fluctuations.
Zeichnungdrawing
In den Fig. 1 bis 3 sind drei verschiedene Ausführungsbeispiele für den erfindungsgemäßen Druckaufnehmer dargestellt. In FIGS. 1 to 3, three different exemplary embodiments for the pressure transducer according to the invention are shown.
Beschreibung Description
In den Figuren sind Schnitte "durch"einen" Teil der— Brennkraftmaschine mit Zylinderblock 1, Kolben 2, Zylinderkopf 3 und Zylinderkopfdichtung H dargestellt. In die Zylinderkopfdichtung 4 ist eine aus Kohlepulver bestehende Widerstandsstrecke 5 eingebracht. Die Widerstandsstrecke 5 ist an ihren dem Zylinderblock 1 und dem Zylinderkopf 3 zugewandten Seiten mit Anschlüssen 7, 8 versehen, die mit einem elektrischen Kreis 6 verbunden sind. Der elektrische Kreis 6 wird z. B. von einer Batterie 9 gespeist. Die Druckschwingungen, die bei schlagartiger Verbrennung im Zylinder auftreten, setzen sich im Motor fort. Durch Änderung des Drucks auch in der Zylinderkopfdichtung 4 ändert sich der Widerstandswert der Widerstandsstrecke 5, was durch die Anzeigevorrichtung 10 im elektrischen Kreis 6 angezeigt werden kann.The figures show sections "through" part of the internal combustion engine with cylinder block 1, piston 2, cylinder head 3 and cylinder head gasket H. A resistance section 5 consisting of carbon powder is introduced into cylinder head gasket 4. Resistance section 5 is located on cylinder block 1 and the sides facing the cylinder head 3 are provided with connections 7, 8 which are connected to an electrical circuit 6. The electrical circuit 6 is fed, for example, by a battery 9. The pressure oscillations which occur in the cylinder in the event of sudden combustion settle By changing the pressure in the cylinder head gasket 4 as well, the resistance value of the resistance path 5 changes, which can be displayed by the display device 10 in the electrical circuit 6.
Ein weiteres Ausführungsbeispiel ist in Fig. 2 gezeigt. Ein Gefäß 11, das am Zylinderblock 1 befestigt ist, ist mit Kohlepulver 12 gefüllt. Eine Elektrode 13, die über eine Isolation Ii mit dem Zylinderkopf 3 verbunden ist, taucht teilweise in das Kohlepulver 12 ein. Bei DruckschwingungenAnother embodiment is shown in FIG. A vessel 11, which is attached to the cylinder block 1, is with Charcoal powder 12 filled. An electrode 13, which is connected to the cylinder head 3 via an insulation Ii, is immersed partially into the carbon powder 12. With pressure fluctuations
030045/0427 - 3 - ?: 030045/0427 - 3 -? :
5454
drückt die Elektrode 13 das Kohlepulver 12 mehr oder weniger zusammen, so daß sich der Widerstandswert der durch das Kohlepulver gebildeten Widerstandsstrecke 5 ändert. Diese Änderung kann wiederum an der Anzeigevorrichtung 10 sichtbar gemacht werden.presses the electrode 13, the carbon powder 12 more or less together, so that the resistance value of the Resistance path 5 formed by the carbon powder changes. This change can in turn be made on the display device 10 can be made visible.
In Fig. 3 ist zusätzlich eine Schraube 15 vorgesehen, die von der Oberseite des Zylinderkopfes 3 durch den Zylinderkopf und die Zylinderkopfdichtung M in den Zylinderblock 1 geschraubt ist. Als Widerstandsstrecke 5 dient eine Kohletablette, die gepreßt und/oder gebunden sein kann und als Unterlegscheibe für die Schraube 15 ausgebildet ist. Eine ebenfalls als Unterlegscheibe ausgebildete Elektrode 16, die gegen den Zylinderkopf 3 durch eine Isolation 17 isoliert ist, dient als erster Anschluß der V.'iderstandsstrecke. Der zweite Anschluß wird über die Schraube 15» die in den als Masse dienenden Zylinderblock hineinreicht, gegeben. Durch Druckschwingungen, die in dem Zylinder erzeugt werden, verwindet sich die Schraube 15, was v.'iderum eine Druckänderung in der Kohletablette hervorruft. Dadurch ändert sich der Widerstandswert der Widerstandsstrecke 5.In Fig. 3, a screw 15 is also provided, from the top of the cylinder head 3 through the cylinder head and the cylinder head gasket M into the cylinder block 1 is screwed. A charcoal tablet, which is pressed and / or bound, serves as the resistance section 5 can and is designed as a washer for the screw 15. One also designed as a washer Electrode 16, which is insulated from cylinder head 3 by insulation 17, serves as the first connection the V. 'resistance section. The second connection is via the screw 15 »which is in the cylinder block serving as ground reaches in, given. The screw 15 is twisted by pressure vibrations that are generated in the cylinder, what v.'iderum a pressure change in the charcoal tablet evokes. This changes the resistance value of the resistance section 5.
030045/0427030045/0427
4 /SOI 4 / SOI
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2917406A DE2917406A1 (en) | 1979-04-28 | 1979-04-28 | Carbon powder IC engine knock detector - has resistive path in head gasket, bolt and washer, or electrode mounted on head, with insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2917406A DE2917406A1 (en) | 1979-04-28 | 1979-04-28 | Carbon powder IC engine knock detector - has resistive path in head gasket, bolt and washer, or electrode mounted on head, with insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2917406A1 true DE2917406A1 (en) | 1980-11-06 |
Family
ID=6069579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2917406A Withdrawn DE2917406A1 (en) | 1979-04-28 | 1979-04-28 | Carbon powder IC engine knock detector - has resistive path in head gasket, bolt and washer, or electrode mounted on head, with insulator |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2917406A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3213428A1 (en) * | 1982-04-10 | 1983-10-20 | Daimler-Benz Ag, 7000 Stuttgart | Spark plug with integrated pressure sensor |
| EP0140066A1 (en) * | 1983-09-15 | 1985-05-08 | Robert Bosch Gmbh | Device for detecting forces, tensions or accelerations at machines, apparatuses or the like |
| WO1989003520A1 (en) * | 1987-10-16 | 1989-04-20 | Ford Motor Company Limited | Ionisation sensor |
| DE4111533A1 (en) * | 1990-04-09 | 1991-10-17 | Nissan Motor | KNOCK SENSOR DEVICE |
| DE4015109A1 (en) * | 1990-05-11 | 1991-11-14 | Lechler Elring Dichtungswerke | CYLINDER HEAD GASKET |
| DE4014502A1 (en) * | 1990-05-07 | 1991-11-14 | Bayerische Motoren Werke Ag | Installing sensor in shape-pressed seal - inserting sensor into aperture in preformed gasket material before pressing esp. for IC engine cylinder head gasket |
| EP0472219A2 (en) * | 1990-08-24 | 1992-02-26 | Toyota Jidosha Kabushiki Kaisha | Device for detecting combustion pressure of an internal combustion engine |
| DE4226012A1 (en) * | 1992-08-06 | 1994-02-10 | Goetze Ag | Cylinder head seal for internal combustion engine - has combustion pressure measurement detector consisting of pressure-sensitive resistance located between crossing conductive tracks in seal to detect combustion irregularities |
| DE19803470A1 (en) * | 1998-01-29 | 1999-08-12 | Siemens Ag | Motor vehicle IC engine combustion chamber gas-pressure determination |
| DE4311838C5 (en) * | 1993-04-15 | 2006-08-10 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Piezoelectric sensor for recording pressure oscillations and their arrangement in internal combustion engines |
| WO2006128755A1 (en) * | 2005-06-01 | 2006-12-07 | Robert Bosch Gmbh | Integrated combustion chamber sensor |
-
1979
- 1979-04-28 DE DE2917406A patent/DE2917406A1/en not_active Withdrawn
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3213428A1 (en) * | 1982-04-10 | 1983-10-20 | Daimler-Benz Ag, 7000 Stuttgart | Spark plug with integrated pressure sensor |
| EP0140066A1 (en) * | 1983-09-15 | 1985-05-08 | Robert Bosch Gmbh | Device for detecting forces, tensions or accelerations at machines, apparatuses or the like |
| WO1989003520A1 (en) * | 1987-10-16 | 1989-04-20 | Ford Motor Company Limited | Ionisation sensor |
| US5066023A (en) * | 1987-10-16 | 1991-11-19 | Ford Motor Company | Ionization sensor |
| US5230238A (en) * | 1990-04-09 | 1993-07-27 | Nissan Motor Co., Ltd. | Knock sensing apparatus |
| DE4111533A1 (en) * | 1990-04-09 | 1991-10-17 | Nissan Motor | KNOCK SENSOR DEVICE |
| DE4111533C2 (en) * | 1990-04-09 | 1994-09-01 | Nissan Motor | Device for determining knocking vibrations |
| DE4014502C2 (en) * | 1990-05-07 | 1998-09-03 | Bayerische Motoren Werke Ag | Method of installing a sensor in a compression molded seal |
| DE4014502A1 (en) * | 1990-05-07 | 1991-11-14 | Bayerische Motoren Werke Ag | Installing sensor in shape-pressed seal - inserting sensor into aperture in preformed gasket material before pressing esp. for IC engine cylinder head gasket |
| US5380014A (en) * | 1990-05-11 | 1995-01-10 | Elring Dichtungswerke Gmbh | Cylinder head gasket |
| DE4015109A1 (en) * | 1990-05-11 | 1991-11-14 | Lechler Elring Dichtungswerke | CYLINDER HEAD GASKET |
| EP0472219A3 (en) * | 1990-08-24 | 1992-12-09 | Toyota Jidosha Kabushiki Kaisha | Device for detecting combustion pressure of an internal combustion engine |
| EP0472219A2 (en) * | 1990-08-24 | 1992-02-26 | Toyota Jidosha Kabushiki Kaisha | Device for detecting combustion pressure of an internal combustion engine |
| DE4226012A1 (en) * | 1992-08-06 | 1994-02-10 | Goetze Ag | Cylinder head seal for internal combustion engine - has combustion pressure measurement detector consisting of pressure-sensitive resistance located between crossing conductive tracks in seal to detect combustion irregularities |
| DE4311838C5 (en) * | 1993-04-15 | 2006-08-10 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Piezoelectric sensor for recording pressure oscillations and their arrangement in internal combustion engines |
| DE19803470A1 (en) * | 1998-01-29 | 1999-08-12 | Siemens Ag | Motor vehicle IC engine combustion chamber gas-pressure determination |
| DE19803470B4 (en) * | 1998-01-29 | 2004-07-15 | Siemens Ag | Method and device for determining the gas forces in the combustion chamber of an internal combustion engine |
| WO2006128755A1 (en) * | 2005-06-01 | 2006-12-07 | Robert Bosch Gmbh | Integrated combustion chamber sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69936794T2 (en) | SEMICONDUCTOR PRESSURE SENSOR AND DEVICE FOR DETECTING PRINTING | |
| DE2917406A1 (en) | Carbon powder IC engine knock detector - has resistive path in head gasket, bolt and washer, or electrode mounted on head, with insulator | |
| DE3037835A1 (en) | ACCELERATOR | |
| EP0219509B1 (en) | Spark plugs with a pressure measurement device | |
| DE69822968T2 (en) | gas sensor | |
| EP0140066B1 (en) | Device for detecting forces, tensions or accelerations at machines, apparatuses or the like | |
| EP0065511A1 (en) | Transducer with a piezo-electric sensitive element | |
| EP0407397A1 (en) | Pressure transducer for determining the pressure in the combustion chamber of an internal combustion engine. | |
| DE102007000166A1 (en) | Device and method for determining a knocking of an internal combustion engine | |
| EP0472544B1 (en) | Sensor for determining the combustion profile in an internal combustion engine | |
| DE2902305A1 (en) | KNOCK VIBRATION SENSOR | |
| DE7912425U1 (en) | PRESSURE TRANSDUCER FOR DETERMINING VIBRATIONS WHEN KNOCKING AN INTERNAL ENGINEER | |
| EP0323956B1 (en) | Spark plug provided with a measurement device | |
| DE3025808A1 (en) | Knock vibration sensor for IC engine - has washer with piezoceramic plate between pressure rings and embedded cabling | |
| DE10332284A1 (en) | Pressure sensor has body with sealing forces decoupled from sensor membrane by groove midway between sensor element ends | |
| DE4104179C2 (en) | ||
| DE3916023A1 (en) | ACCELERATION DETECTOR | |
| DE4113784C2 (en) | Vibration sensor | |
| DE3021088A1 (en) | Capacitive press. sensor e.g. for IC engines - has dielectric and two electrodes formed as disc or tube | |
| DE3028187A1 (en) | Engine knock vibration sensor with adjustable resonant frequency - has adjustable spring acting on seismic mass influencing sensor | |
| DE3228149A1 (en) | Sensor | |
| EP0370203B1 (en) | Acceleration pick-up sensor | |
| DE3006654A1 (en) | Knock detection in IC engines - using vibration sensor with vibrating mass exerting force on dielectric medium | |
| DE2946434A1 (en) | Accelerometer for IC engine knock vibration detection - has piezo-ceramic plate loaded via seismic mass with pre-stressing arrangement | |
| DE2803721A1 (en) | Engine bolt with combined pressure transducer - has piezoelectric element bonded to bolt head to respond to pressures caused by detonation or pinking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8120 | Willingness to grant licences paragraph 23 | ||
| 8139 | Disposal/non-payment of the annual fee |