| 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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| 01/28/1999 | DE19731420A1 Vorrichtung zur Erfassung des Drucks und der Temperatur im Saugrohr einer Brennkraftmaschine und Verfahren zu ihrer Herstellung A device for detecting the pressure and the temperature in the intake manifold of an internal combustion engine, and processes for their preparation |
| 01/14/1999 | WO1999001732A1 Vibration pickup with pressure sheath |
| 01/14/1999 | DE19727703A1 Schwingungsaufnehmer mit Druckhülse Vibration sensor with ferrule |
| 01/07/1999 | EP0889309A1 Device for detecting and measuring knocking and anti-knock control system using the same |
| 01/07/1999 | DE19727702A1 Pressure casing for vibration sensor, e.g. for engine block of IC engine |
| 01/06/1999 | CN2303288Y Internal hanging type shock-adsorption electronic pressure meter is supporting cylinder |
| 12/22/1998 | US5852245 Piezoelectric pressure sensor suitable for sensing pressure at high temperatures |
| 12/22/1998 | US5852234 Knocking detecting sensor |
| 12/17/1998 | DE19826714A1 Knock detector for internal combustion engine |
| 12/10/1998 | DE19723804A1 Device for measuring pressure in lifting cylinder machines |
| 12/03/1998 | DE19823594A1 Optical knock detector for IC engine |
| 12/02/1998 | EP0764263A4 Fiberoptic sensor using tapered and bundled fibers |
| 12/01/1998 | US5844769 Exhaust pressure transducer |
| 11/26/1998 | WO1998053198A1 Method for identifying knocking combustion in an internal combustion engine with an alternating current ignition system |
| 11/26/1998 | DE19822296A1 Knock detection arrangement for IC engine |
| 11/19/1998 | WO1998052062A1 Measuring device for electrically decoupled function testing of working systems |
| 11/19/1998 | DE19730931C1 Volumetric flow sensor with linear characteristic |
| 11/19/1998 | DE19720535A1 Verfahren zur Erkennung klopfender Verbrennung bei einer Brennkraftmaschine mit einer Wechselspannungszündanlage Method for detecting knocking combustion in an internal combustion engine with an alternating current |
| 11/17/1998 | US5837887 In an internal combustion engine |
| 11/17/1998 | US5836285 Device for controlling knocking in an internal combustion engine |
| 11/12/1998 | DE19818470A1 Knocking detection device for IC engine |
| 11/10/1998 | US5834636 Engine control apparatus |
| 11/10/1998 | US5834629 Combustion sensor and combustion engine equipped with such a sensor |
| 11/04/1998 | EP0875745A1 Sensor for detecting pinking in a combustion engine |
| 11/04/1998 | EP0874978A1 Pressure wave sensor |
| 10/29/1998 | DE19720379C1 Measuring system for electrically uncoupled functioning of IC engine ignition coil |
| 10/22/1998 | WO1998047008A2 Air data measurement system with circuit for linearizing pressure transducer output |
| 10/20/1998 | US5823802 Electrical connector with combination seal and contact member |
| 10/01/1998 | WO1998043056A1 Device for determining the pressure and temperature in the suction pipe of an internal combustion engine |
| 09/29/1998 | US5814994 Of an internal combustion engine |
| 09/24/1998 | WO1998041911A1 Altitude alert system for aircraft operating in reduced vertical separation minimum airspace and method therefor |
| 09/24/1998 | DE19711939A1 Vorrichtung zur Erfassung des Drucks und der Temperatur im Saugrohr einer Brennkraftmaschine A device for detecting the pressure and temperature in the intake manifold of an internal combustion engine |
| 09/22/1998 | US5811667 For an internal combustion engine |
| 09/17/1998 | DE19810523A1 System for determining ionic current for IC engine |
| 09/16/1998 | EP0864079A1 Detonation detection method for internal combustion engines |
| 09/16/1998 | CN2291656Y Capacitive baroceptor |
| 09/03/1998 | DE19708806C1 Fibre=optic hydrophone-probe for measuring pressure amplitudes in liquid medium |
| 09/01/1998 | US5801534 Circuit for ion current measurement in combustion space of an internal combustion engine |
| 08/25/1998 | US5798467 Pluck resistance measuring instrument for snap members |
| 08/25/1998 | US5798453 For a vibration pickup |
| 08/20/1998 | WO1998036280A1 Accelerometer sensor for detecting knocks and method for making same |
| 08/20/1998 | WO1998036159A1 Gas shuttle valve, and method for measuring the pressure in the combustion chamber of an internal combustion chamber |
| 08/20/1998 | DE19706385A1 Volumetric ratio determination method, e.g. for IC engine compression ratio |
| 08/20/1998 | DE19705621A1 Gaswechselventil und Verfahren zum Messen des Druckes in einem Brennraum einer Brennkraftmaschine Gas exchange valve and method for measuring the pressure in a combustion chamber of an internal combustion engine |
| 08/13/1998 | WO1998035210A1 Fuel injectors with integral fiber optic pressure sensors and associated compensation and status monitoring devices |
| 08/11/1998 | US5793150 Flat seal |
| 08/06/1998 | DE19704264A1 Knocking detection device for multiple cylinder IC engine |
| 07/29/1998 | EP0855585A2 Engine cylinder pressure sensor with thermal compensation element |
| 07/28/1998 | US5785020 Combustion state detecting apparatus for an internal-combustion engine |
| 07/21/1998 | US5783744 Engine knocking detection system |
| 07/08/1998 | EP0670996B1 Device for fault recognition in a knock-detecting device |
| 07/07/1998 | US5777239 Piezoelectric pressure/force transducer |
| 07/02/1998 | WO1998028726A1 Circuit arrangement for interference-free signal evaluation |
| 06/25/1998 | WO1998027412A1 A pressure sensor inlet adapter |
| 06/25/1998 | DE19654329A1 Schaltungsanordnung zur störungsfreien Auswertung von Signalen Circuit arrangement for trouble-free evaluation of signals |
| 06/24/1998 | CN1185832A Device for knock recognition and control of a combustion engine |
| 06/17/1998 | EP0722562B1 Engine knock detection process |
| 06/10/1998 | DE19731329C1 Pressure and temperature determination system for fuel-air mixture |
| 06/09/1998 | US5763769 Fiber optic misfire, knock and LPP detector for internal combustion engines |
| 06/09/1998 | US5762045 Method of and apparatus for ascertaining a knock intensity signal of an internal combustion engine |
| 05/28/1998 | WO1998022787A1 Pressure and temperature sensor |
| 05/27/1998 | EP0844470A1 Knocking detecting sensor |
| 05/26/1998 | US5758312 Apparatus for eliminating noises accompanying the knocking signal of an automobile engine |
| 05/26/1998 | US5756888 Compression stroke indicator |
| 05/19/1998 | US5753798 Pressure sensor for gaseous and/or liquid media of internal combustion engines with improved temperature stability |
| 05/07/1998 | DE19747839A1 Pressure measuring system for air conditioning heat exchangers |
| 05/05/1998 | US5747677 Apparatus and method for detecting pressure in an engine cylinder |
| 04/30/1998 | WO1998017988A1 Integrated fiber optic combustion pressure sensor |
| 04/29/1998 | CN2280285Y Capacity type atmospheric pressure sensor |
| 04/28/1998 | US5745611 Optical fiber pressure sensor |
| 04/28/1998 | US5744770 Indicating apparatus for indicating a vacuum |
| 04/28/1998 | US5744698 Accelerometric sensor for measuring the piston knock of an internal combustion engine |
| 04/28/1998 | US5743233 Method for detecting knocking |
| 04/22/1998 | EP0837307A1 Optical sensor for combustion chamber |
| 04/21/1998 | US5741974 Pressure sensor with resonant vibration preventing means |
| 04/16/1998 | DE19700240C1 Cartridge sleeve with machined-in ram body for very high gas pressure measurement |
| 04/14/1998 | US5739626 Piezoelectric sensor |
| 04/14/1998 | US5739418 Vibration pick-up and method of producing the same |
| 04/14/1998 | US5739417 Method and device for determining operating parameters in an internal combustion engine |
| 04/08/1998 | EP0834060A1 Device for knock recognition and control of a combustion engine |
| 04/07/1998 | US5736896 Signal processing circuit |
| 03/18/1998 | EP0702784B1 Pressure transducer for the determination of the pressure in combustion chambers of internal combustion engines |
| 03/11/1998 | EP0828076A2 Device for knock detection of an internal combustion engine |
| 03/10/1998 | US5726351 Spark plug comprising a force measuring element |
| 03/04/1998 | EP0826882A2 Device for knock detection in an internal combustion engine |
| 02/25/1998 | EP0825428A2 Integrated optoelectronic combustion pressure sensor |
| 02/25/1998 | EP0825343A1 Method and device for ignition diagnostics of a thermic engine by means of measuring the ionisation impedance |
| 02/17/1998 | US5719326 Reconfigurable filter system |
| 02/03/1998 | US5714680 Method and apparatus for measuring pressure with fiber optics |
| 01/27/1998 | US5712424 Method and apparatus for measuring diesel engine cylinder pressure |
| 01/21/1998 | EP0819925A2 A preignition detection apparatus |
| 01/20/1998 | US5710715 For detecting abnormalities by analyzing a vibration waveform |
| 01/07/1998 | EP0816679A1 Method and device for the early detection of faults in pumps |
| 01/06/1998 | US5706372 Integrated optoelectronic combustion pressure sensor |
| 12/30/1997 | US5703282 Pressure sensor for pressure detection in combustion chamber of internal combustion engine |
| 12/30/1997 | CA2134316C Leak detector for gas air bag inflator |
| 12/10/1997 | EP0811833A1 Pressure sensor for liquid or gas medium |
| 12/10/1997 | EP0811151A1 Sealing unit for a fuel pressure sensor |
| 12/02/1997 | US5693936 Physical quantity detecting apparatus and internal combustion engine control apparatus each utilizing optical fiber |
| 11/26/1997 | EP0809096A1 Apparatus and method for measuring relative compression in the cylinders of an internal combustion |