| 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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| 02/16/2000 | CN2364450Y Pressure data logger for single-chip microcomputer textile plant equipment |
| 02/10/2000 | WO2000006926A1 Control device in a motor vehicle and a pressure sensor used by said control device |
| 02/10/2000 | DE19834212A1 Steuergerät in einem Kraftfahrzeug und von diesem verwendeter Drucksensor Control unit in a motor vehicle and used by this pressure sensor |
| 02/02/2000 | CN2362118Y Resistance strain tension sensing hydraulic dynamometer |
| 02/01/2000 | US6020742 Combustion monitoring apparatus for internal combustion engine |
| 01/25/2000 | US6016781 Pressure-detecting device for internal combustion engine |
| 01/13/2000 | DE19829409A1 Oscillation detector using pressure sleeve e.g. knock sensor for car IC engine |
| 01/13/2000 | DE19829408A1 Vibration transducer detecting knocking in vehicle engines |
| 01/13/2000 | DE19829407A1 Oscillation detector with pressure sleeve e.g. knock sensor for car IC engine |
| 01/11/2000 | US6012426 Automated psychoacoustic based method for detecting borderline spark knock |
| 01/11/2000 | US6012425 Device for detecting knocking and regulation of an internal combustion engine |
| 01/06/2000 | WO2000000800A1 Spark plug with concentric pressure sensor |
| 12/29/1999 | WO1999067528A1 Fuel injection valve and pressure sensor combination |
| 12/29/1999 | CN2356338Y 离子流压力传感器 Ion flow pressure sensor |
| 12/23/1999 | WO1999066299A1 Fiber-optic pressure sensor, variants and method for producing a resilient membrane |
| 12/23/1999 | DE19827287A1 Fuel injection valve-pressure sensor combination for fuel injection system |
| 12/23/1999 | CA2335211A1 Fiber-optic pressure sensor, variants and method for producing a resilient membrane |
| 12/16/1999 | WO1999064834A1 Spark plug with pressure sensor |
| 12/15/1999 | EP0963509A1 Gas shuttle valve, and method for measuring the pressure in the combustion chamber of an internal combustion chamber |
| 12/14/1999 | US6000276 Knock detection device for an internal combustion engine avoiding erroneous knock detection |
| 12/08/1999 | CN1238056A Circuit arrangement for interference-free signal evaluation |
| 12/07/1999 | US5996398 Device for knock detection in internal combustion engine |
| 12/01/1999 | EP0960340A1 Accelerometer sensor for detecting knocks and method for making same |
| 12/01/1999 | EP0960324A2 Method for monitoring and error recognition |
| 11/30/1999 | US5992386 Method for knock control in combustion engines |
| 11/25/1999 | DE19919931A1 Device to measure atmospheric pressure in IC engine |
| 11/23/1999 | US5987962 Copper crusher gauge holder |
| 11/23/1999 | CA2130652C Fiber optic high temperature pressure sensor |
| 11/18/1999 | WO1999058945A1 Pressure sensor for measurement of gas pressure in a cylinder of a combustion engine |
| 11/04/1999 | DE19616744C2 Verfahren und Einrichtung zum Erfassen klopfender Verbrennung mittels optischer Sonde in Brennräumen von Verbrennungsmotoren Method and apparatus for detecting knocking combustion by means of optical probe in combustion chambers of internal combustion engines |
| 11/02/1999 | US5978728 Detonation detection method for internal combustion engines |
| 10/20/1999 | EP0950885A2 Method for the determination of the smooth running of a spark ignition engine |
| 10/14/1999 | WO1999051875A1 Device for suppressing engine knocking in internal combustion engines |
| 10/13/1999 | EP0948783A1 Circuit arrangement for interference-free signal evaluation |
| 10/12/1999 | US5965804 Knock sensor |
| 10/07/1999 | DE19816641C1 Verfahren zur Bestimmung der Laufruhe eines Ottomotors Method for determining the smoothness of a gasoline engine |
| 10/07/1999 | DE19814938A1 Vorrichtung zum Unterdrücken von Motorklopfen in Brennkraftmaschinen Device for suppressing engine knocking in internal combustion engines |
| 10/05/1999 | US5960772 Apparatus and method for knock detection in internal combustion engines |
| 09/28/1999 | US5959192 Knock detecting device for internal combustion engine |
| 09/21/1999 | US5955826 Spark plug with built-in pressure sensor |
| 09/21/1999 | US5955664 Device for detecting a state of combustion in an internal combustion engine |
| 09/16/1999 | WO1999046571A1 Method for evaluating knock signals of internal combustion engines |
| 09/02/1999 | WO1999044069A1 Knock sensor with low sensitivity dispersion |
| 09/01/1999 | EP0939064A2 Optical fiber and fiber-optic sensing system using the same |
| 09/01/1999 | EP0938651A1 Pressure and temperature sensor |
| 08/31/1999 | US5946642 Air data measurement system with circuit for linearizing pressure transducer output |
| 08/24/1999 | US5942677 Knock sensor system for detecting and responding to a disconnect condition |
| 08/19/1999 | WO1999031476A3 Method for monitoring and error recognition particularly for use in a device for knock detection |
| 08/17/1999 | US5939636 Pressure sensor |
| 08/17/1999 | US5939616 Knocking detecting sensor |
| 08/12/1999 | DE19803470A1 Motor vehicle IC engine combustion chamber gas-pressure determination |
| 08/10/1999 | US5936235 Cylinder pressure sensor |
| 08/05/1999 | DE19903224A1 Detector for ion current generated by combustion ions |
| 08/05/1999 | DE19829410A1 Vibration pick-up, e.g. to monitor knocking noises of IC engine |
| 07/29/1999 | DE19802487A1 Measurement arrangement for electrically decoupled functional testing of systems in operation |
| 07/27/1999 | US5929322 Device for detecting knocking in an internal combustion engine |
| 07/07/1999 | EP0927337A1 Device for detecting the pressure and temperature in the induction pipe of an internal combustion engine and method for the production of said device |
| 07/07/1999 | EP0654141B1 Adaptor for mounting a pressure sensor to a gas turbine housing |
| 07/01/1999 | DE19817083C1 Combustion characteristics sensor device for i.c. engine |
| 06/24/1999 | WO1999031476A2 Method for monitoring and error recognition particularly for use in a device for knock detection |
| 06/24/1999 | DE19756081A1 Verfahren zur Überwachung und Fehlererkennung Method for monitoring and fault detection |
| 06/23/1999 | EP0923717A1 Device for determining the pressure and temperature in the suction pipe of an internal combustion engine |
| 06/17/1999 | DE19755192A1 Capacitive pressure pickup for measuring pressure in IC engine combustion chamber |
| 06/16/1999 | EP0922949A1 Method for the detection of knocking in internal combustion engines from an ion current signal |
| 06/16/1999 | EP0922948A1 Method for the detection of knocking in internal combustion engines from an ion current signal |
| 06/16/1999 | EP0922947A1 Procedure and system for knockdetection in combustion engines |
| 06/09/1999 | EP0874978B1 Pressure wave sensor |
| 06/03/1999 | WO1999015872A3 Method for evaluating the march of pressure in a combustion chamber |
| 05/25/1999 | US5907243 Measuring circuit for sensing ionisation within a cylinder of a combustion engine |
| 05/18/1999 | US5905193 Preignition detection apparatus |
| 05/12/1999 | EP0915327A1 Pressure sensor |
| 05/12/1999 | DE19749814A1 Method to measure pressure in internal combustion chamber as function of crankshaft angle |
| 05/12/1999 | DE19746898A1 Knocking sensor for vehicle |
| 05/12/1999 | CN2318629Y Alarm device of pressure gage |
| 05/06/1999 | EP0912828A1 Method for identifying knocking combustion in an internal combustion engine with an alternating current ignition system |
| 05/06/1999 | DE19742648A1 Knock sensor e.g. for automobile engineering |
| 05/05/1999 | CN1216107A Device for determining pressure and temp. in suction pipe of IC engine |
| 05/04/1999 | US5900536 Device for detecting knocking of an internal combustion engine |
| 04/20/1999 | US5895860 Heat exchanging medium pressure measuring apparatus |
| 04/20/1999 | US5895859 Pressure sensor |
| 04/20/1999 | US5895840 Vibration sensing device having slidable conductive member |
| 04/08/1999 | DE19741884A1 Verfahren zur Bestimmung relevanter Größen, die den Zylinderdruck in den Zylindern einer Brennkraftmaschine repräsentiert Process for the determination of relevant variables representing the cylinder pressure in the cylinders of an internal combustion engine |
| 04/01/1999 | WO1999015873A1 Process for determining relevant variables which represent the cylinder pressure in the cylinders of an internal combustion engine |
| 04/01/1999 | WO1999015872A2 Method for evaluating the march of pressure in a combustion chamber |
| 04/01/1999 | DE19756336C1 Compression and ignition system testing method for combustion engine |
| 03/25/1999 | WO1999014571A1 Load sensor for measuring engine cylinder pressure and seat occupant weight |
| 03/25/1999 | DE19840516A1 Sensor with housing with opening and cover closing opening with bearing section operating rod |
| 03/25/1999 | DE19741820A1 Evaluating combustion chamber pressure |
| 03/23/1999 | CA2107874C Piezoelectric sensor |
| 03/18/1999 | WO1999013308A1 Method of detecting and controlling detonation of an internal combustion engine |
| 03/04/1999 | WO1999010652A1 Knock adjustment method for an internal combustion engine |
| 03/03/1999 | EP0671612B1 Knock sensor with beam accelerometer |
| 03/02/1999 | US5877425 Semiconductor-type pressure sensor with sensing based upon pressure or force applied to a silicon plate |
| 02/25/1999 | WO1998047008A3 Air data measurement system with circuit for linearizing pressure transducer output |
| 02/16/1999 | US5872307 Vibration pick-up with pressure sleeve |
| 02/04/1999 | WO1999005494A1 Method and device for determing gas pressure and temperature in an hollow space |
| 02/04/1999 | WO1999005477A1 Device for detecting the pressure and temperature in the induction pipe of an internal combustion engine and method for the production of said device |
| 02/03/1999 | EP0895314A2 Electrical connector with combination seal and contact member |
| 02/03/1999 | EP0895076A2 Mass fraction burned and pressure estimation through spark plug ion sensing |
| 02/03/1999 | EP0894976A2 Combustion state detector for an internal combustion engine |