| 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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| 08/10/2004 | US6772733 Optically controlled IPCS circuitry |
| 08/03/2004 | US6769305 Acceleration sensor |
| 07/29/2004 | WO2004063694A1 Method and device for identifying knocking |
| 07/28/2004 | EP1440182A2 Corrosion-proof pressure transducer |
| 07/22/2004 | WO2004061403A1 Method and apparatus for detecting combustion instability in continuous combustion systems |
| 07/22/2004 | WO2004061283A1 Signal processing device and control unit for co-operating with a signal processing device |
| 07/22/2004 | DE19545008C5 Verfahren zur Überwachung von periodisch arbeitenden Maschinen Method for monitoring periodically operating machines |
| 07/22/2004 | DE10300204A1 Verfahren und Vorrichtung zur Klopferkennung Method and apparatus for detecting knocking |
| 07/21/2004 | EP1438556A2 Sensor assembly operating at high temperature and method for mounting same |
| 07/21/2004 | CN1514908A Valve for controlling fluids and method for measuring pressures |
| 07/15/2004 | US20040134282 Pressure sensor device having temperature sensor |
| 07/15/2004 | DE19803470B4 Verfahren und Vorrichtung zur Bestimmung der Gaskräfte im Brennraum einer Brennkraftmaschine Method and device for determining the gas forces in the combustion chamber of an internal combustion engine |
| 07/15/2004 | DE10300133A1 Signalverarbeitungsvorrichtung und Steuergerät zur Zusammenarbeit mit einer Signalverarbeitungsvorrichtung Signal processing device and control device for cooperation with a signal processing device |
| 07/08/2004 | WO2004057293A2 Apparatus for pressure detection in an engine combustion chamber |
| 07/08/2004 | US20040129059 Spark plug mounted thick film strain guage |
| 07/08/2004 | DE19919931B4 Vorrichtung und Verfahren zum Erfassen eines Atmosphärendrucks in einer Verbrennungskraftmaschine Apparatus and method for detecting an atmosphere pressure in an internal combustion engine |
| 07/08/2004 | DE19810523B4 Vorrichtung zur Erfassung ionalen Stroms für eine Brennkraftmaschine A device for detecting ional current for an internal combustion engine |
| 07/06/2004 | US6758086 Automotive cylinder pressure sensors |
| 07/01/2004 | US20040123653 Method and apparatus for detecting combustion instability in continuous combustion systems |
| 07/01/2004 | US20040123652 Method and apparatus for detecting combustion instability in continuous combustion systems |
| 06/29/2004 | US6756722 Method for fabricating spark plug with piezoelectric sensor and spark plug fabricated by the same |
| 06/29/2004 | US6756579 Optical fiber based apparatus and sensor with enhanced signal for pressure measurements |
| 06/24/2004 | US20040118182 Arrangement and method to measure cylinder pressure in a combustion engine |
| 06/24/2004 | DE10028105B4 Fehlzündungsdetektionssystem mittels Ionenmessung bei einer Schließvorspannung Misfire detection system using ion measurement at a closing bias |
| 06/22/2004 | US6754611 Failure diagnostic system for atmospheric pressure detecting device |
| 06/22/2004 | US6752022 Compliant standoff for low pressure sensing device |
| 06/22/2004 | US6752005 Nonresonant type knock sensor |
| 06/22/2004 | US6752004 Misfire detection apparatus for internal combustion engine |
| 06/15/2004 | US6751543 Method, computer program, and control system for operating a motor vehicle having an internal combustion engine |
| 06/15/2004 | US6750798 Apparatus for processing knock sensor signal |
| 06/15/2004 | US6748922 Knock control apparatus for internal combustion engine |
| 06/03/2004 | WO2004005688A9 Method for checking the operability of an ambient pressure sensor of an internal combustion engine |
| 06/03/2004 | US20040103714 Knock detection device |
| 06/01/2004 | US6742499 Method and apparatus for detecting abnormal combustion conditions in lean burn reciprocating engines |
| 05/27/2004 | DE19506133B4 Vorrichtung zur Erfassung des Brennrauminnendruckes mindestens eines Zylinders einer Verbrennungskraftmaschine An apparatus for detecting the combustion chamber internal pressure of at least one cylinder of an internal combustion engine |
| 05/27/2004 | DE10317377A1 Klopferfassungsvorrichtung für eine Verbrennungskraftmaschine Knock detection apparatus for an internal combustion engine |
| 05/27/2004 | DE10003214B4 Einrichtung zur Schätzung des Ein- und Auslaßkanaldrucks im Verbrennungsmotor Means for estimating the inputs and Auslaßkanaldrucks in the internal combustion engine |
| 05/25/2004 | US6739182 Vibration pickup and an insulating disk for a vibration pickup |
| 05/25/2004 | US6739181 Combustion detecting apparatus of engine |
| 05/21/2004 | WO2004042219A2 Wavelet based artificial neural net combustion sensing |
| 05/20/2004 | US20040094124 Method and apparatus for controlling combustion quality in lean burn reciprocating engines |
| 05/20/2004 | US20040093951 Magnetoelastic pressure sensor |
| 05/19/2004 | EP1420155A2 Method and apparatus for controlling combustion quality in lean burn reciprocating engines |
| 05/19/2004 | DE10350850A1 Verfahren für eine geregelte Energieversorgung zur Erfassung von Ionisierung im Zylinder eines Verbrennungsmotors Method for a regulated power supply for detecting ionization in the cylinder of an internal combustion engine |
| 05/18/2004 | US6738145 Micromachined, etalon-based optical fiber pressure sensor |
| 05/18/2004 | US6736109 Knock control system |
| 05/13/2004 | US20040089056 Knock detection apparatus for internal combustion engine |
| 05/12/2004 | EP1417466A1 Optical device for measuring pressure or force |
| 05/11/2004 | US6732589 Pressure sensor, a method for manufacturing a pressure sensor and a combustion engine having a pressure sensor |
| 05/06/2004 | WO2003071119A3 Apparatus for measuring pressures in engine cylinders |
| 05/06/2004 | US20040084035 Device to provide a regulated power supply for in-cylinder ionization detection by using the ignition coil fly back energy and two-stage regulation |
| 05/06/2004 | US20040084024 Wavelet-based artificial neural net combusition sensing |
| 05/06/2004 | US20040084022 Knock control apparatus and knock control method for internal combustion engine |
| 05/06/2004 | US20040084017 Method and apparatus for detecting abnormal combustion conditions in lean burn reciprocating engines |
| 05/06/2004 | US20040083795 Pressure sense gauge assembly for attachment to automatic spark plug |
| 05/06/2004 | US20040083794 Method of detecting cylinder ID using in-cylinder ionization for spark detection following partial coil charging |
| 05/06/2004 | EP1416156A1 Knock control apparatus and knock control method for internal combustion engine |
| 05/06/2004 | EP1416144A2 Method and apparatus for detecting abnormal combustion conditions in lean burn reciprocating engines |
| 05/06/2004 | DE10349163A1 Drucksensorvorrichtung mit Temperatursensor Pressure sensor device with temperature sensor |
| 05/06/2004 | DE10318588A1 Klopfsteueranordnung für Verbrennungsmotor Knock control system for internal combustion engine |
| 04/29/2004 | US20040079139 Ignition apparatus for internal combustion engine |
| 04/29/2004 | US20040079138 Method of setting the knock detection sensor of a piston engine |
| 04/29/2004 | DE19933214B4 Vorrichtung zur Erfassung eines Ionenstroms A device for detecting an ion current |
| 04/29/2004 | DE19509188B4 Druckdetektor Pressure detector |
| 04/27/2004 | US6727812 Method and device for error detection and diagnosis in a knock sensor |
| 04/27/2004 | US6725834 Ignition system with ion current detecting circuit |
| 04/22/2004 | US20040075498 Charge amplifier for piezoelectric pressure sensor |
| 04/22/2004 | US20040075061 Optical fiber based apparatus and sensor with enhanced signal for pressure measurements |
| 04/22/2004 | US20040074476 Knock control apparatus for internal combustion engine |
| 04/22/2004 | DE19612540B4 Schwingungsaufnehmer mit Druckhülse Vibration sensor with ferrule |
| 04/22/2004 | DE10346296A1 Glühkerze mit Verbrennungsdrucksensor Glow plug with combustion pressure sensor |
| 04/22/2004 | DE10346295A1 Glühkerze mit einem Verbrennungsdrucksensor sowie Aufbau und Verfahren zu deren Einbau A glow plug with a combustion pressure sensor, as well as methods for their construction and installation |
| 04/20/2004 | US6722343 Knock control device for an internal combustion engine |
| 04/20/2004 | US6722183 System and method for impulse noise suppression for integrator-based ion current signal processor |
| 04/20/2004 | CA2147463C Joints |
| 04/15/2004 | WO2004031711A1 Piezoelectric sensor and input device comprising same |
| 04/15/2004 | DE4401313B4 Piezoelektrischer, in Resonanz schwingender Klopfsensor für eine Verbrennungskraftmaschine Piezoelectric, oscillating in resonance knock sensor for an internal combustion engine |
| 04/13/2004 | US6718829 Semiconductor pressure sensor and an exhaust system including the same |
| 04/08/2004 | WO2003087753A3 Device for pressure measurement, particularly in a combustion chamber of an internal combustion engine |
| 04/07/2004 | EP1406074A2 Spark plug mounted thick film strain gauge |
| 04/07/2004 | CN1145225C Chip type LED and its producing method |
| 04/01/2004 | DE10243897A1 Piezoelectric pressure measurement device or actuator has a pressure measurement element in the form of a piezoelectric layer deposited on the surface of a first pressure transmitting body with a covering metallic electrode layer |
| 03/25/2004 | WO2004025238A1 Detonation sensor |
| 03/25/2004 | US20040057645 Fiber optic cylinder pressure measurement system for a combustion engine |
| 03/25/2004 | US20040055390 Force sensing element |
| 03/25/2004 | US20040055388 Pressure sensor unit |
| 03/24/2004 | EP1399665A1 Valve for controlling fluids and method for measuring pressures |
| 03/18/2004 | DE10240671A1 Combustion engine knocking sensor has a piezo-resistive amorphous carbon, or DLC, layer as a sensor element, which provides an electrical signal that is evaluated to detect knocking |
| 03/17/2004 | EP1398609A1 Method of setting the knock detection sensor of a piston engine |
| 03/17/2004 | EP1078234B1 Pressure sensor for measurement of gas pressure in a cylinder of a combustion engine |
| 03/11/2004 | US20040045382 Compliant standoff for low pressure sensing device |
| 03/11/2004 | US20040045345 Spark plug for receiving a pressure sensor and corresponding spark plug connector |
| 03/11/2004 | DE10238721A1 Vorrichtung zur Messung einer Kraft, Vorrichtung zur Messung eines Drucks und Drucksensor Device for measuring a force device for measuring a pressure and pressure sensor |
| 03/10/2004 | CN1141566C Vabration pickup with press sheath |
| 03/10/2004 | CN1141565C Method for monitoring and error recognition |
| 03/09/2004 | US6701775 Pressure sensor apparatus for measuring pressures including knock conditions in engine cylinders |
| 03/04/2004 | DE10325318A1 Verbrennungsbedingungserfassungsanordnung für einen Verbrennungsmotor Combustion condition detecting device for an internal combustion engine |
| 02/26/2004 | US20040035404 Ignition system with multiplexed combustion signals |
| 02/26/2004 | DE10236615A1 Pressure measurement in cylinder of vehicle engine with piezoelectric fuel injection valve, picks up signals from piezoelectric actuator itself |
| 02/25/2004 | EP1391710A2 Force measuring device, pressure measuring device and pressure sensor |