| 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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| 05/23/2001 | EP1102050A2 Measuring device for the electrically decoupled functional checking of working systems |
| 05/23/2001 | EP1102049A2 Measuring device for the electrically decoupled functional checking of working systems |
| 05/23/2001 | EP1101933A2 Circuit for ignition misfire recognition in a combustion engine |
| 05/23/2001 | EP0963509B1 Gas shuttle valve, and method for measuring the pressure in the combustion chamber of an internal combustion chamber |
| 05/23/2001 | DE19956032A1 Schaltung zur Zündaussetzererkennung bei einer Brennkraftmaschine Circuit for Misfire Detection in an internal combustion engine |
| 05/23/2001 | DE10041666A1 Optoelectronic measuring equipment for detecting combustion process, has optical sensors whose sensor ends are mainly arranged radially on jacket of cylindrical component |
| 05/22/2001 | US6234146 Knock control device for an internal combustion engine |
| 05/16/2001 | EP1099066A1 Control device in a motor vehicle and a pressure sensor used by said control device |
| 05/15/2001 | US6230546 Method and apparatus for detecting combustion knock from the ionic current in an internal combustion engine |
| 05/09/2001 | EP1098185A1 Preignition detecting system and method |
| 05/09/2001 | EP1098184A1 Preignition detecting system and method |
| 05/03/2001 | DE10054144A1 Pressure sensing device has pressure sensor that is arranged in socket, and which is positioned inside fluid conduit when fastening unit is fastened to fluid conduit |
| 05/01/2001 | US6226576 Method for monitoring and error recognition |
| 04/19/2001 | DE10037514A1 Combustion condition detector for IC engine, has silicon controlled rectifier to conduct spark current from secondary winding to ground, when ignition voltage at its anode has reached preset voltage level |
| 04/19/2001 | DE10005437A1 Knock control system for cars has correction for transient conditions avoids errors |
| 04/19/2001 | DE10004592A1 Knock detection system for car engines has background level correction for engine state avoids false detection |
| 04/18/2001 | EP1092968A1 Combustion analysing method for an internal combustion engine |
| 04/18/2001 | EP1092135A1 Spark plug with concentric pressure sensor |
| 04/12/2001 | DE19964193A1 Procedure to determine ambient pressure of combustion engine |
| 04/12/2001 | DE10028105A1 System for detecting combustion condition in IC engine with ignition system including ignition coil and prim. and sec. windings also switch which works selectively so that in response to ignition control signal prim |
| 04/10/2001 | US6213092 Method for determining the running smoothness of an otto spark ignition engine |
| 04/10/2001 | US6212946 Securing means for a device for detecting the pressure and temperature in the intake tube of an internal combustion engine |
| 04/10/2001 | US6212944 Apparatus and method for monitoring engine conditions, using magnetostrictive sensors |
| 04/10/2001 | US6212940 Accelerometer sensor for detecting knocks and method for making same |
| 04/05/2001 | WO2001023859A1 Method for detecting knocking |
| 04/04/2001 | EP1089062A1 Fiber-optic pressure sensor, variants and method for producing a resilient membrane |
| 03/29/2001 | DE19946346A1 Verfahren zur Klopferkennung Method for knock detection |
| 03/29/2001 | DE10009877A1 Verbrennungszustands-Detektoreinrichtung für Brennkraftmaschinen Combustion state detecting means for internal combustion engines |
| 03/28/2001 | EP1086362A1 Spark plug with pressure sensor |
| 03/28/2001 | EP1086305A1 Method for determining the combustion characteristics of an internal combustion engine |
| 03/20/2001 | US6204594 Spark plug with pressure sensor |
| 03/20/2001 | US6202474 Ion current detector |
| 03/15/2001 | DE10040959A1 Knock detector extracts vibration component superimposed on ion current, controls ignition timing based on knock intensity, varies detection threshold depending on ion current information |
| 03/08/2001 | DE10009606A1 Knock detection device for internal combustion engine detects vibrations superimposed on ion current, converts to pulsed form, computes number of pulses and controls ignition timing |
| 02/28/2001 | EP1078234A1 Pressure sensor for measurement of gas pressure in a cylinder of a combustion engine |
| 02/22/2001 | WO2001013085A1 Induction pipe pressure sensor |
| 02/22/2001 | WO2001013084A1 Spark plug provided with a pressure sensor, and heat engine equipped with same |
| 02/21/2001 | EP1077369A1 Spark plug provided with a pressure sensor and combustion engine provided with such spark plugs |
| 02/21/2001 | CN2420635Y High precision monitor for coherent laser gas pressure change |
| 02/13/2001 | US6186129 Ion sense biasing circuit |
| 02/13/2001 | US6185984 Device for detecting the knocking of an internal combustion engine |
| 02/08/2001 | DE19937154A1 Altitude detection in motor vehicle, calculating measurements of suction reed pressure from environmental pressure dependent on operating point, and subjecting them subsequently to filtering |
| 02/07/2001 | EP1074828A2 Spark plug with pressure measuring device |
| 02/01/2001 | WO2001007884A1 Pressure sensor |
| 01/25/2001 | DE19934832A1 Pressure sensor for IC engine air intake pipe has anti-freeze fluid in section of sensor channel coupling pressure sensor to air intake pipe closest to sensor surface |
| 01/18/2001 | DE10028632A1 Druckerkennungsvorrichtung und Einbauanordnung hierfür Pressure detection device and mounting structure therefor |
| 12/20/2000 | EP1061352A2 Spark plug cap and spark plug fitting method |
| 12/13/2000 | CN2410630Y Enclosed magnetic column type engine oil pressure indicator |
| 12/12/2000 | US6160762 Optical sensor |
| 12/06/2000 | EP1057037A1 Knock sensor with low sensitivity dispersion |
| 12/05/2000 | US6155241 Method for identifying knocking combustion in an internal combustion engine with an alternating current ignition system |
| 11/28/2000 | US6151954 Device for detecting knocking in an internal combustion engine |
| 11/16/2000 | DE19916204C1 Verfahren zur Verbrennungskenngrößenbestimmung einer Brennkraftmaschine A method for combustion characteristic determination of an internal combustion engine |
| 11/15/2000 | EP1052490A2 Snap-in attachment arrangement |
| 11/14/2000 | US6145491 Method for detecting combustion knock from the ionic current in an internal combustion engine |
| 11/02/2000 | DE19941932A1 Detecting compression pressure, especially in combustion chamber, involves using variable capacitance whose dielectric is influenced by medium and pressure occurring in chamber |
| 10/25/2000 | EP1046026A1 Method and arrangement for evaluating combustion processes in an internal combustion engine |
| 10/24/2000 | US6134947 Load sensor for measuring engine cylinder pressure and seat occupant weight |
| 10/19/2000 | WO2000061932A1 Method for determining the combustion characteristics of an internal combustion engine |
| 10/19/2000 | DE19933214A1 Ionenstrom-Detektor Ion current detector |
| 10/17/2000 | US6131465 Fiber optic combustion pressure sensors for engine knock and misfire detection |
| 09/28/2000 | DE19912376A1 Device to measure ion current between spark plug electrodes of internal combustion engine; has capacitor charged by sparking voltage in cross-branch of bridge circuit |
| 09/26/2000 | US6122971 Integrated fiber optic combustion pressure sensor |
| 09/13/2000 | EP1034416A2 Method for evaluating the march of pressure in a combustion chamber |
| 09/05/2000 | US6112577 Piezoelectric resonance type knock sensor for internal combustion engine |
| 08/30/2000 | EP1030969A1 Fuel injection valve and pressure sensor combination |
| 08/22/2000 | US6106327 Sensor connection assembly |
| 08/22/2000 | US6105552 Abnormal combustion detection apparatus and method for internal combustion engine |
| 08/09/2000 | EP1026493A2 Fiber optic high temperature pressure sensor |
| 08/09/2000 | CN1262718A Device for suppressing engine knocking in internal combustion engines |
| 08/02/2000 | CN1261954A Vabration pickup with press sheath |
| 08/01/2000 | US6094990 Spark plug with concentric pressure sensor |
| 07/19/2000 | EP1020780A1 Pressure sensor device and suction release apparatus |
| 07/18/2000 | US6089077 Mass fraction burned and pressure estimation through spark plug ion sensing |
| 07/12/2000 | EP1017979A1 Process for determining relevant variables which represent the cylinder pressure in the cylinders of an internal combustion engine |
| 07/05/2000 | EP1015855A1 Fuel injectors with integral fiber optic pressure sensors and associated compensation and status monitoring devices |
| 06/28/2000 | EP1012557A1 Method of detecting and controlling detonation of an internal combustion engine |
| 06/28/2000 | CN1053961C Coupler |
| 06/14/2000 | EP1007842A1 Knock adjustment method for an internal combustion engine |
| 06/08/2000 | WO2000011376A3 Control device in a motor vehicle |
| 06/06/2000 | US6070883 Sealing unit for a fuel pressure sensor |
| 05/11/2000 | WO2000026881A1 Rate of rise detector for use with explosion detection and suppression equipment |
| 05/11/2000 | CA2349267A1 Rate of rise detector for use with explosion detection and suppression equipment |
| 05/10/2000 | EP0999438A2 Automated psychoacoustic based method for detecting borderline spark knock |
| 05/10/2000 | EP0998664A1 Method and device for determing gas pressure and temperature in an hollow space |
| 05/10/2000 | EP0998633A1 Device for suppressing engine knocking in internal combustion engines |
| 05/09/2000 | US6061637 Method of determining knock resistance rating for non-commercial grade natural gas |
| 04/25/2000 | US6054860 Device for detecting knocking in an internal combustion engine |
| 04/19/2000 | EP0993596A1 Vibration pickup with pressure sheath |
| 04/13/2000 | WO2000020833A1 Method and arrangement for evaluating combustion processes in an internal combustion engine |
| 04/06/2000 | DE19845232A1 Verfahren und Vorrichtung zur Bewertung von Verbrennungsvorgängen an einer Brennkraftmaschine Method and apparatus for evaluating combustion processes in an internal combustion engine |
| 03/29/2000 | EP0988630A2 Air data measurement system with circuit for linearizing pressure transducer output |
| 03/22/2000 | EP0987554A1 Measuring circuit |
| 03/22/2000 | CN1248323A Method for monitoring and error recognition |
| 03/16/2000 | DE19841539A1 Arrangement to measure knocking in internal combustion engine; has knocking sensor assigned to each cylinder and band-pass filter to filter signal |
| 03/14/2000 | US6035722 Pressure sensor for detecting the pressure in a pump work chamber of a fuel injection pump |
| 03/07/2000 | US6034590 Sensor |
| 03/02/2000 | WO2000011376A2 Control device in a motor vehicle |
| 03/01/2000 | EP0981759A1 Measuring device for electrically decoupled function testing of working systems |
| 02/29/2000 | US6031462 Rate of rise detector for use with explosion detection suppression equipment |