| Patents for G01L 23 - 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 (3,845) |
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| 06/17/1992 | EP0490076A1 Gain control circuit in a detection circuit of knocking signals |
| 06/16/1992 | US5121929 Gasket with encased load sensor |
| 06/16/1992 | US5121729 Knocking control method and apparatus for internal combustion engine |
| 06/09/1992 | US5119783 Control apparatus for an internal combustion engine |
| 06/03/1992 | EP0387266B1 Ionisation sensor |
| 05/26/1992 | US5115778 Apparatus for controlling an internal combustion engine |
| 05/14/1992 | WO1992008112A1 Mounting a sensor in a combustion chamber |
| 05/12/1992 | US5111699 Sensor for measuring the pressure of a medium |
| 05/06/1992 | EP0483188A1 Pressure and heat flow sensor for the combustion chamber of internal combustion engines. |
| 04/15/1992 | EP0480544A2 Method of fabrication and trimming of a pressure sensor |
| 04/15/1992 | CN2101864U Pressure measurer for train |
| 04/14/1992 | US5103789 Method and apparatus for measuring and controlling combustion phasing in an internal combustion engine |
| 04/09/1992 | DE4132096A1 Knocking detector for IC engine - has comparator for signals generated b vibration detector and arithmetic processor providing reference |
| 04/08/1992 | CN2101228U Air leakage pressure measurer for engine crank-case |
| 04/07/1992 | US5101659 Mounting device for pressure sensor |
| 04/02/1992 | WO1992005365A1 Spark-ignition engine |
| 03/31/1992 | US5099681 Knock detector using optical fiber thermometer |
| 03/25/1992 | CN2099970U Hydraulic test device |
| 03/17/1992 | US5095741 Pressure transducer for determining the pressure in the combustion chamber of an internal combustion engine |
| 03/17/1992 | CA1297579C Piezo-electric transducer with several coaxial sensitive elements |
| 03/11/1992 | EP0473735A1 Pressure sensor for the determination of the pressure in the combustion chamber of an internal-combustion engine |
| 03/11/1992 | CN2098681U Measurer for burst pressure |
| 03/11/1992 | CN2098680U Non-contact pressure meter for electric contact |
| 03/03/1992 | US5093792 Combustion prediction and discrimination apparatus for an internal combustion engine and control apparatus therefor |
| 03/03/1992 | US5092160 System and method for detecting engine knock in internal combustion engines |
| 02/26/1992 | EP0472219A2 Device for detecting combustion pressure of an internal combustion engine |
| 02/11/1992 | US5088044 Knocking detection device for an automotive engine |
| 02/11/1992 | US5087882 Ionization current detector device for an internal combustion engine |
| 02/06/1992 | WO1992001916A1 Pressure sensor for determination of the pressure in a combustion chamber of an internal-combustion engine |
| 02/06/1992 | WO1992001915A1 Pressure sensor for determination of the pressure in a combustion chamber of an internal-combustion engine |
| 02/06/1992 | WO1992001914A1 Pressure sensor for determination of the pressure in a combustion chamber of an internal-combustion engine |
| 02/06/1992 | WO1992001913A1 Pressure sensor for determination of the pressure in a combustion chamber of an internal-combustion engine |
| 02/06/1992 | WO1992001912A1 Pressure sensor for determination of the pressure in the combustion space of an internal-combustion engine |
| 01/29/1992 | EP0397748B1 Device for measuring a pulsating variable in an internal combustion engine |
| 01/23/1992 | DE4103705A1 Druckgeber zur druckerfassung im brennraum von brennkraftmaschinen Pressure transducer for sensing pressure in the combustion chamber of internal combustion engines |
| 01/23/1992 | DE4022783A1 Pressure pick=up for IC engine combustion chamber - has piezoelectric hybrid circuit acting as sensor and electronic component carrier |
| 01/23/1992 | DE4022782A1 Druckgeber zur druckerfassung im brennraum von brennkraftmaschinen Pressure transducer for sensing pressure in the combustion chamber of internal combustion engines |
| 01/23/1992 | DE4022780A1 Druckgeber zur druckerfassung im brennraum von brennkraftmaschinen Pressure transducer for sensing pressure in the combustion chamber of internal combustion engines |
| 01/23/1992 | DE4022742A1 Druckgeber zur druckerfassung im brennraum von brennkraftmaschinen Pressure transducer for sensing pressure in the combustion chamber of internal combustion engines |
| 01/22/1992 | CN2094054U Electronic gas-pressure measuring indicating device |
| 01/21/1992 | US5083278 Knocking detection device for an automotive engine |
| 01/16/1992 | DE4021915A1 Pulsating parameter detector for IC engine - has pneumatic filtering and/or damping arrangement producing quasi sinusoidal parameter for sampling |
| 01/15/1992 | CN2093393U Working pressure detecting meter for diesel engine |
| 01/15/1992 | CN2093392U High-frequency response piezo-electric film type pressure transducer |
| 01/15/1992 | CN1057903A On-line analyzer for vapour pressure of gasoline |
| 01/01/1992 | CN2092092U Photoelectric pressure gage |
| 12/26/1991 | WO1991019966A1 Pressure and heat flow sensor for the combustion chamber of internal combustion engines |
| 12/18/1991 | CN2090978U Electronic display for measuring oil pressure |
| 12/10/1991 | US5070843 Ignition timing control apparatus of internal-combustion engine |
| 12/04/1991 | EP0459946A1 Monitoring system, especially for engines, compressors and reciprocating machines |
| 12/04/1991 | EP0458993A1 Knock control on a cylinder-by-cylinder basis in an internal combustion engine |
| 12/03/1991 | US5069063 Device for measuring a pulsating variable in an internal combustion engine |
| 11/28/1991 | WO1991018198A1 Cylinder head gasket |
| 11/28/1991 | DE4016872A1 Durable, stable gauge for testing IC engine pressures - uses strain gauge linked to metal diaphragm which is subjected to pressure being measured |
| 11/27/1991 | CN2089627U Shock-proof photoelectric pulse pressure digit display gage |
| 11/26/1991 | US5068635 Stress sensor having deformable ceramic hollow member |
| 11/25/1991 | CA2042688A1 High pressure sensor |
| 11/21/1991 | DE4015992A1 Detecting and measuring internal combustion engine knocking - by evaluating sensor signals w.r.t. combination of characteristics to achieve improved knock detection eliminating faulty decisions |
| 11/19/1991 | US5066023 Ionization sensor |
| 11/14/1991 | DE4015109A1 Zylinderkopfdichtung Cylinder head gasket |
| 11/14/1991 | DE4014502A1 Installing sensor in shape-pressed seal - inserting sensor into aperture in preformed gasket material before pressing esp. for IC engine cylinder head gasket |
| 10/31/1991 | DE4113784A1 Vibration sensor esp. for IC engine knock detection - has piezoelectric element and vibration plate in housing with plastic sealing cover |
| 10/30/1991 | EP0454486A2 Method and apparatus for detecting knock in an internal combustion engine |
| 10/29/1991 | US5060615 Knock sensing apparatus for an internal combustion engine |
| 10/23/1991 | EP0407397B1 Pressure transducer for determining the pressure in the combustion chamber of an internal combustion engine |
| 10/16/1991 | EP0451374A1 Optical pressure sensor for determining the variation of the pressure in an internal combustion engine |
| 10/09/1991 | EP0450698A1 Sensor for measuring the pressure of a medium, in particular for measuring the changing pressure in a diesel injection pump |
| 10/03/1991 | WO1991014929A1 Pressure sensor for the determination of the pressure in the combustion chamber of an internal-combustion engine |
| 10/02/1991 | EP0448603A1 System for monitoring and controlling engine performance. |
| 10/02/1991 | DE4009377A1 Druckgeber zur druckerfassung im brennraum von brennkraftmaschinen Pressure transducer for sensing pressure in the combustion chamber of internal combustion engines |
| 10/01/1991 | US5052214 Knock detector using optical fiber thermometer |
| 09/26/1991 | DE4006273A1 Verfahren und vorrichtung zur ermittlung des verlaufs des innendrucks eines zylinders einer kolbenmaschine A method and apparatus for determining the course of the internal pressure of a cylinder of a piston engine |
| 09/19/1991 | WO1991014163A1 Knock-detection circuit arrangement |
| 09/19/1991 | DE4008284A1 Schaltungsanordnung zur klopferkennung Circuit arrangement for knock detection |
| 09/18/1991 | EP0446376A1 Apparatus for controlling the occurrence of engine knocking |
| 09/10/1991 | US5046466 Spark-ignition engine |
| 09/05/1991 | WO1991013333A1 Process and device for measuring the variation in internal pressure in the cylinder of a piston engine |
| 08/28/1991 | EP0443708A2 An apparatus for controlling an internal combustion engine |
| 08/22/1991 | WO1991012511A1 Internal combustion engine compression monitoring system |
| 08/20/1991 | US5040510 Method for controlling knocking in internal combustion engines |
| 08/14/1991 | EP0441522A2 Control device for an automobile |
| 08/14/1991 | EP0441157A2 Spark plug with pressure detector |
| 08/06/1991 | US5038069 Cylinder pressure sensor for an internal combustion engine |
| 07/25/1991 | DE4001475A1 Pressure measurer for IC engine combustion chamber - has measurement chamber in gap between cylinder head and block for measurement free of influence from vibrating parts |
| 07/24/1991 | EP0419553A4 Method of operating an engine and measuring certain engine parameters |
| 07/23/1991 | US5033286 On-line instrument for measuring effective partial pressure of dissolved gases in a liquid |
| 07/16/1991 | US5031450 Apparatus for detecting intake pressure in internal combustion engine |
| 07/09/1991 | US5029565 Spark ignited internal combustion engine and a control system therefor |
| 07/03/1991 | EP0435611A2 Versatile, overpressure proof, absolute pressure sensor |
| 07/02/1991 | US5027774 Spark ignition engines |
| 06/05/1991 | EP0429819A1 Device for measuring a periodically fluctuating variable in an internal combustion engine |
| 06/04/1991 | US5020360 Process for determining and evaluating the combustion pressure of an internal combustion engine |
| 05/15/1991 | EP0426999A2 Pressure sensor arrangement in combustion engines |
| 05/01/1991 | CN1012543B Piezoelectric transduce with multiple sensitive coaxial elements |
| 04/24/1991 | EP0423130A1 Method and apparatus for measuring detonation in an internal combustion engine. |
| 04/18/1991 | WO1991005160A1 Apparatus for controlling the occurrence of engine knocking |
| 04/17/1991 | EP0423031A1 Method and device for detecting knocking |
| 04/10/1991 | EP0421952A1 Device for detecting pinking, cylinder by cylinder, in an internal combustion engine |
| 04/09/1991 | US5005549 Method and apparatus for recognizing a faulty combustion in an internal combustion engine |
| 04/09/1991 | US5005547 Abnormal combustion-detecting device and combustion control device for internal combustion engines |