| 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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| 11/20/1997 | DE19615448A1 Vorrichtung zur Klopferkennung und Regelung einer Brennkraftmaschine A device for detecting knocking and controlling an internal combustion engine |
| 11/18/1997 | US5689107 Displacement-based opto-electronic accelerometer and pressure sensor |
| 11/18/1997 | US5687694 Engine control |
| 11/13/1997 | DE19647408C1 Pressure sensor for vehicle door |
| 11/13/1997 | DE19616744A1 Optical probe knocking identification method for combustion chambers of IC engines |
| 10/30/1997 | WO1997040356A1 Device for knock recognition and control of a combustion engine |
| 10/22/1997 | CN1162559A Vibration receiver and manufacturing method therefor |
| 10/15/1997 | EP0801294A1 High frequency ion current measurement after AC current ignition |
| 10/15/1997 | EP0686233B1 Reciprocating piston engine |
| 10/07/1997 | US5675072 Combustion condition detector for internal combustion engine |
| 10/02/1997 | DE19612541A1 Vibration pick-up with pressure sleeve in housing e.g. for engine knock sensor |
| 09/30/1997 | US5672812 Sparkplug/pressure sensor device |
| 09/18/1997 | DE19625947C1 Pump-operating fault detection method |
| 09/09/1997 | US5665906 Device for generating a synthetic signal for testing knock control functions |
| 09/09/1997 | US5664544 Apparatus and method for control of an internal combustion engine |
| 09/02/1997 | US5663493 Apparatus and method for measuring relative compression |
| 08/28/1997 | WO1997031251A1 Fiber optic combustion pressure sensors for engine knock and misfire detection |
| 08/19/1997 | US5659132 For an internal combustion engine |
| 08/13/1997 | CN1156817A Sensor |
| 08/07/1997 | DE19614288C1 Ion-current measurement circuit e.g. for motor vehicle IC engine combustion chamber |
| 07/31/1997 | WO1997027400A1 Measuring circuit for sensing ionisation within a cylinder of a combustion engine |
| 07/24/1997 | WO1997026513A1 Pressure wave sensor |
| 07/24/1997 | DE19602048A1 Druckwellensensor Pressure wave sensor |
| 07/23/1997 | EP0720734A4 Knock detection method and apparatus with dual integration windows |
| 07/10/1997 | WO1997024592A1 Method of controlling knocking in internal-combustion engines |
| 07/10/1997 | WO1997024527A1 Method for knock control in combustion engines |
| 07/03/1997 | WO1997023771A1 Sealing unit for a fuel pressure sensor |
| 07/03/1997 | DE19549175A1 Verfahren zur Klopfregelung in Brennkraftmaschinen Method for knock control in internal combustion engines |
| 06/26/1997 | DE19614287C1 Ion-current-measuring circuit for knock detection in combustion chamber of IC engine |
| 06/26/1997 | DE19547890A1 Dichtungseinheit für einen Kraftstoffdrucksensor A seal assembly for a fuel pressure sensor |
| 06/25/1997 | EP0780676A1 Injection pressure sensor system |
| 06/12/1997 | WO1997021084A1 Detonation detection method for internal combustion engines |
| 06/05/1997 | DE19545008A1 Monitoring cyclical working machine for early detection of machine alterations |
| 06/03/1997 | US5635629 Knock sensor |
| 05/28/1997 | EP0576650B1 Device for detecting knocking in an internal combustion engine |
| 05/27/1997 | US5632247 Preignition detecting system |
| 05/07/1997 | EP0594796B1 Knock sensor |
| 05/07/1997 | CN1149131A Pluck-resistance measuring instrument for snap members |
| 04/29/1997 | US5625151 Silicone oil-filled semiconductor pressure sensor |
| 04/22/1997 | US5622901 Method of forming a semiconductor strain sensor |
| 04/17/1997 | WO1997014025A1 Linear type high output knock sensor |
| 04/10/1997 | DE19536168A1 Automatically determining knocking limit of combustion engine |
| 04/09/1997 | CN1147087A Pressure sleeve |
| 04/08/1997 | CA2115621C Non-intrusive cylinder pressure sensor having improved response characteristics |
| 04/03/1997 | DE19536167A1 Obtaining balance data for anti=knocking control of combustion engine with knocking sensor |
| 04/02/1997 | EP0448603B1 System for monitoring and controlling engine performance |
| 03/26/1997 | EP0764263A1 Fiberoptic sensor using tapered and bundled fibers |
| 03/26/1997 | CN1145988A Pressure sleeve with thread ring |
| 03/25/1997 | US5614668 Fuel pressure sensing system |
| 03/18/1997 | US5612497 Adaptor for monitoring a pressure sensor to a gas turbine housing |
| 03/13/1997 | WO1997009567A1 Cylinder inner pressure detector for diesel engines and method of using the same |
| 03/12/1997 | EP0762101A1 Identification of irregular working conditions of a combustion engine by revolution dependent torsional vibrations of the crankshaft |
| 03/12/1997 | EP0762098A1 Knocking intensity signal from height and position of a differentiated light signal from the combustion chamber |
| 03/04/1997 | US5608633 System and method for detecting knocking for internal combustion engine |
| 02/26/1997 | CN2248341Y Fault detector for cylinder of vehicle |
| 02/25/1997 | US5606311 Air filter diagnostic |
| 02/25/1997 | US5606117 Pressure sensor for measuring pressure in an internal combustion engine |
| 02/12/1997 | CN1142606A Pressure sensor for IC engine with intaking pipe |
| 02/04/1997 | US5600074 Silicon chip for use in a force-detection sensor |
| 02/04/1997 | US5600070 Fiber optic combustion pressure sensor with improved long-term reliability |
| 02/04/1997 | US5598822 Knocking detection method for internal combustion engines and ignition timing control method therefor |
| 02/04/1997 | CA2115620C Non-intrusive cylinder pressure sensor |
| 01/22/1997 | CN2245766Y Eddy pressure type waterpower ergograph |
| 01/14/1997 | US5594649 Digitally reconfigurable engine knock detecting system |
| 01/14/1997 | US5594405 Pressure transducer with pressure sensitive conductor |
| 01/08/1997 | EP0752582A2 Measuring circuit for an ionic current |
| 01/08/1997 | EP0752581A2 Measuring circuit for an ionic current |
| 01/08/1997 | EP0752580A2 Measuring circuit for an ionic current |
| 01/02/1997 | DE19529708C1 Relative compression measurement method for internal combustion engine |
| 12/18/1996 | EP0670037B1 Joints |
| 12/12/1996 | DE19622651A1 Ring-shaped cylinder pressure sensor e.g. for IC engine |
| 12/10/1996 | US5583295 Pressure sensor having gauge resistors and temperature compensating resistors on the same surface |
| 12/04/1996 | EP0745836A1 Device for producing a synthetic signal for testing knocking control functions |
| 12/03/1996 | US5581016 Aircraft engine detonation indication system |
| 11/27/1996 | CN2241334Y Rocker arm piston upper stopping position checker for engine |
| 11/27/1996 | CN2241333Y Bench full-automatic gas relay checker |
| 11/26/1996 | US5577476 Ignition timing control apparatus for engine |
| 11/20/1996 | EP0742905A1 Accelerometric sensor for measuring pinking in an internal combustion engine |
| 11/19/1996 | US5575144 System and method for actively controlling pressure pulses in a gas turbine engine combustor |
| 11/14/1996 | DE19618980A1 Combustion monitoring system for IC engine with DC voltage source |
| 11/14/1996 | DE19517676A1 Pressure sensor for internal combustion engine with induction manifold pipe |
| 11/13/1996 | CN1135574A Indicator for indicating vacuum |
| 10/24/1996 | DE19514410A1 Pulsed signal detector esp. for signal with base oscillation and superimposed oscillation of different frequency |
| 10/15/1996 | US5566093 Sensor with resonator, digital filter, and display |
| 10/10/1996 | DE19542729C1 Oscillation detector having piezoceramic element and seismic mass esp. for knock detection in combustion engine |
| 10/08/1996 | US5562076 Reciprocating piston engine |
| 09/25/1996 | EP0733891A2 Preignition detecting system |
| 09/24/1996 | US5559280 Combustion chamber pressure transducer and method of making same |
| 09/24/1996 | US5557971 Pressure sensor |
| 09/24/1996 | US5557968 Piezoelectric measuring element for measuring mechanical variables |
| 09/18/1996 | EP0732573A2 Method and device for recognizing vibration signals, e.g. knocking of internal combustion engines |
| 09/18/1996 | CN2235617Y Steam thermal insulation five valve group |
| 09/11/1996 | EP0731349A1 Spectral knock detection method and system therefor |
| 09/05/1996 | DE19606835A1 Control system for IC engine |
| 08/29/1996 | DE19524148C1 Vibration receiver for motor engine block |
| 08/29/1996 | DE19506272A1 Knock regulating method for IC engine with engine noise detected by body sound detectors |
| 08/28/1996 | EP0728513A1 Apparatus for indicating the subatmospheric pressure |
| 08/25/1996 | CA2169982A1 Indicating apparatus for indicating a vacuum |
| 08/08/1996 | DE19538854C1 Pressure detector for combustion chamber of internal combustion engine |
| 07/30/1996 | CA2105752C Piezoelectric pressure sensor and method of assembling same |