| 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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| 06/18/1985 | US4523566 Knocking control system in engine |
| 06/12/1985 | EP0143970A2 Measuring circuit for an ionic current |
| 06/04/1985 | US4521769 Device for detecting the failure of a sensor |
| 05/28/1985 | US4519254 High pressure transducer |
| 05/21/1985 | US4517945 Engine vibration transmission structure |
| 05/15/1985 | EP0141049A1 Circuit for the recognition of knocking in an Otto engine |
| 05/14/1985 | US4517648 Torque variation detecting method and apparatus for internal combustion engine |
| 05/08/1985 | EP0140066A1 Device for detecting forces, tensions or accelerations at machines, apparatuses or the like |
| 04/30/1985 | US4514656 Combination sparkplug and combustion process sensor |
| 04/30/1985 | CA1186389A1 Tuned vibration detector |
| 03/19/1985 | US4506338 Method and apparatus for judging the state of operation of an intake passage pressure detecting device for an engine |
| 03/19/1985 | US4506186 Spark plug and optical combustion sensor combination |
| 03/19/1985 | US4505152 Method and apparatus for measuring engine compression ratio |
| 02/26/1985 | US4501137 Method for detecting knocking in internal combustion engine |
| 02/20/1985 | EP0056383B1 Sensor |
| 02/12/1985 | US4499373 Differential pressure sensing apparatus |
| 02/12/1985 | US4498331 Knocking detecting apparatus for internal combustion engines |
| 02/05/1985 | US4497198 Knocking sensor |
| 01/22/1985 | US4494409 Engine vibration sensor |
| 01/22/1985 | US4494401 Pressure sensor for the combustion chamber of an internal combustion engine |
| 01/08/1985 | US4492109 Knocking detection apparatus for an internal combustion engine |
| 01/08/1985 | US4492108 Method and apparatus for recognizing irregular combustion processes in an internal combustion engine |
| 01/01/1985 | US4491110 Internal combustion engine combustion chamber pressure sensing apparatus |
| 01/01/1985 | US4491010 Dynamic combustion characteristic sensor for internal combustion engine |
| 12/27/1984 | EP0129354A2 Dynamic combustion characteristic sensor for internal combustion engine |
| 12/25/1984 | US4489595 Engine air inlet pressure measurement |
| 12/18/1984 | US4488528 System for controlling the ignition timing of a combustion engine |
| 12/05/1984 | EP0127018A2 Measuring barometric pressure with a manifold pressure sensor in a microprocessor based engine control system |
| 12/05/1984 | EP0126946A2 Process and device for recognizing knocking in a combustion machine |
| 11/20/1984 | US4483295 Control device for multicylinder engine |
| 11/20/1984 | US4483183 System for measuring crank angle for internal combustion engine |
| 11/20/1984 | US4483181 Combustion pressure peak detector for combustion control for an internal combustion engine |
| 11/20/1984 | US4483180 Method and device for checking an operating condition of an internal combustion engine |
| 11/20/1984 | US4483179 Method of and device for detection of knocking for internal combustion engine |
| 11/13/1984 | US4481924 Engine knock detecting apparatus |
| 11/13/1984 | US4481807 Internal combustion engine with a knocking sensor |
| 10/30/1984 | US4479389 Tuned vibration detector |
| 10/24/1984 | EP0122555A2 Arrangement for detecting forces |
| 10/23/1984 | US4478068 Internal combustion engine knock sensing method and system |
| 10/17/1984 | EP0121790A2 Method of and device for the recognition of knocks with a digital filter |
| 10/17/1984 | EP0121607A2 Knock control apparatus equipped with altitude compensation function |
| 10/16/1984 | US4476711 Combined vibration and temperature sensor |
| 10/16/1984 | US4476709 Knock detecting apparatus for internal combusion engines |
| 10/10/1984 | EP0120999A2 Fibre-optic sensor for force and pressure measurements, as well as for monitoring and protection purposes |
| 10/09/1984 | US4475508 Automotive engine cylinder block |
| 10/09/1984 | US4475381 Method and apparatus for detecting pneumatic pressure in an internal combustion engine |
| 09/18/1984 | US4471742 Fuel supply control method for an internal combustion engine equipped with a supercharger |
| 09/04/1984 | US4468950 Engine vibration transmission structure |
| 08/28/1984 | US4467634 Internal combustion engine knocking sensing and recognition system |
| 08/21/1984 | US4466406 Regulating device for control variables of an internal combustion engine |
| 08/15/1984 | EP0115807A2 Method for discriminating motor/combustion pressures in an I.C.E. combustion chamber |
| 08/14/1984 | US4465047 Knock detecting apparatus for combustion engines |
| 08/07/1984 | US4463722 Engine knock sensor |
| 08/07/1984 | US4463610 Tuned vibration detector |
| 08/07/1984 | US4463596 Knock sensor for combustion engines |
| 07/31/1984 | US4462362 For an internal combustion engine |
| 07/31/1984 | US4462247 Knock detecting apparatus for internal combustion engines |
| 07/24/1984 | US4461257 Method and system for controlling engine ignition timing |
| 07/17/1984 | US4459958 Electronic device receiving an ignition signal from an internal combustion engine and supplying a signal positioned in relation to top dead center |
| 07/11/1984 | EP0113170A2 Energy converter performance determination |
| 07/04/1984 | EP0112508A2 Knock control system |
| 07/03/1984 | CA1170076A1 Piezoelectric knock sensor |
| 06/26/1984 | US4455862 Method and apparatus of detecting engine knocking |
| 06/19/1984 | US4454750 Apparatus for generating a knock signal for use with an internal combustion engine |
| 06/12/1984 | CA1169144A1 Vibration sensor |
| 06/05/1984 | US4452072 Combustion condition sensor |
| 06/05/1984 | US4452069 Method of and apparatus for sensing knocking in internal combustion engine |
| 05/29/1984 | US4450811 Controller for internal combustion engine |
| 05/29/1984 | US4450709 Internal combustion engine with engine knock sensor |
| 05/29/1984 | CA1168362A1 Apparatus for measurement and display of relative compression by cylinder |
| 05/15/1984 | US4448059 Engine vibration sensor |
| 05/08/1984 | US4446724 Engine pressure and knock sensor |
| 05/08/1984 | US4446723 Optical combustion event sensor structure particularly knock sensor for an internal combustion engine |
| 05/08/1984 | US4446722 Vibration sensor, particularly knock sensor for internal combustion engines |
| 05/02/1984 | EP0106940A2 An arrangement for the measurement of the difference between two flows in two separate ducts |
| 04/24/1984 | US4444172 Internal combustion engine knock sensing system |
| 04/24/1984 | US4444043 Knocking detector for internal combustion engine |
| 04/24/1984 | US4444042 Engine-knock detection method and apparatus |
| 04/18/1984 | EP0105533A1 Homogenization and supply improvement device for carburetor engines |
| 04/10/1984 | US4441370 Vibration sensor |
| 04/10/1984 | US4441360 Engine timing instrument |
| 04/10/1984 | CA1165430A1 Engine with knock sensing apparatus having multiple frequency tuning |
| 04/03/1984 | US4441044 Transducer with a piezoelectric sensor element |
| 04/03/1984 | US4440014 Knocking detection device |
| 03/20/1984 | US4437334 Method and apparatus for detecting knocking combustion |
| 03/14/1984 | EP0102779A2 Method and apparatus for detecting knock in a spark ignition engine |
| 02/14/1984 | US4430899 Fluid pressure sensor, particularly diesel engine injection pump pressure sensor |
| 02/07/1984 | US4429570 Injection timing transducer |
| 02/07/1984 | US4429565 Knocking detecting apparatus for an internal combustion engine |
| 01/31/1984 | US4428227 Intake pipe pressure indicating system for an internal combustion engine of a vehicle |
| 01/18/1984 | EP0098584A2 An ignition timing control method for internal combustion engines |
| 01/17/1984 | US4425891 Engine knock control apparatus |
| 01/17/1984 | US4425788 Combustion monitoring system for multi-cylinder internal combustion engine |
| 01/10/1984 | US4424737 Stroke cushioning apparatus for hydraulic cylinders |
| 01/10/1984 | US4424706 Engine with knock sensing using product component of knock vibration signal |
| 01/10/1984 | US4424705 Engine knock sensing apparatus |
| 01/10/1984 | US4424704 Knock detecting apparatus for internal combustion engine |
| 01/10/1984 | CA1160345A1 Determination of gross thrust-related parameters |
| 01/03/1984 | US4423621 Knocking detector |
| 12/27/1983 | US4422323 Combustion process observation element construction |