| 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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| 03/16/1982 | US4319481 Clip-on piezoelectric transducer |
| 03/16/1982 | US4319480 Knock detector device for internal combustion engines |
| 02/23/1982 | US4317182 Signal averaging device |
| 02/23/1982 | US4316440 Knock detecting apparatus for internal combustion engine |
| 02/18/1982 | WO1982000520A1 Sensor |
| 02/04/1982 | WO1982000352A1 Engine knock signal processing circuit |
| 01/26/1982 | US4312215 Apparatus for detecting pressure fluctuations in the combustion chamber of an internal combustion engine |
| 01/26/1982 | US4312214 Knock detector for internal combustion engine |
| 01/19/1982 | US4311040 Power cylinder balancer unit |
| 01/12/1982 | US4309900 Apparatus for measurement and display of relative compression by cylinder |
| 12/29/1981 | US4308519 Device for detecting the knocking phenomenon in controlled-ignition internal combustion engines, based on the use of ionization probes |
| 12/29/1981 | US4307603 Apparatus for detecting pressure fluctuations in the combustion chamber of an internal combustion engine |
| 12/29/1981 | US4307602 Knock sensor |
| 12/16/1981 | EP0041599A2 Force sensor, in particular for ballistic pressure measurements |
| 12/16/1981 | EP0041501A1 Piezoelectric transducer for fuel injection engine. |
| 12/08/1981 | US4305013 Engine knock sensor using piezoelectric rod oscillator |
| 12/08/1981 | US4304126 Transducer for fuel injection engine with flexible piezoelectric element |
| 12/01/1981 | US4302964 Knock sensor |
| 11/25/1981 | EP0040390A2 Pressure detector for an internal-combustion engine |
| 11/24/1981 | US4301678 Relative power contribution of an internal combustion engine |
| 11/10/1981 | US4299117 Multi-function engine sensor |
| 10/27/1981 | US4296635 Transducer device for measuring the internal pressure in pipes |
| 10/06/1981 | US4292841 Compression rate analyzer |
| 09/22/1981 | US4290301 Knock detecting apparatus for internal combustion engine |
| 09/17/1981 | WO1981002630A1 Throttle control device |
| 09/15/1981 | US4289102 Engine spark timing controlling device |
| 09/09/1981 | EP0035249A1 Inductive sensor for measuring pressure in pipes |
| 09/01/1981 | US4286687 Air gun firing sensor apparatus and system |
| 08/20/1981 | WO1981002323A1 A method for generating a reference signal in knock detector connected to an internal combustion engine,and a device for the implementation of the method |
| 07/28/1981 | US4280358 Monitoring the operation of an internal combustion engine |
| 07/22/1981 | EP0032333A1 Device for detecting combustion faults in an explosion engine |
| 07/21/1981 | US4279143 Electronic pinking detector |
| 07/07/1981 | US4276770 Rapid octane rating |
| 07/01/1981 | EP0031290A2 Method and apparatus for measuring the relative power contribution of an internal combustion engine |
| 06/30/1981 | US4275586 Oscillation sensor, particularly combustion engine knock sensor |
| 06/11/1981 | WO1981001613A1 Piezoelectric transducer for fuel injection engine |
| 06/09/1981 | US4271799 Knocking control device |
| 06/02/1981 | US4271469 Method for detecting knocking in internal combustion engine |
| 05/12/1981 | US4266427 Combustion timing method and apparatus with direct TDC detection |
| 05/12/1981 | US4266421 Vibration sensors for internal combustion engines |
| 05/05/1981 | US4265206 Device for detecting the knock phenomena in internal combustion engines having a controlled-ignition device, based on the use of temperature sensors |
| 05/05/1981 | US4265205 Controlled-ignition I.C. engine with thermal detection system |
| 04/30/1981 | WO1981001171A1 A method of a voiding abnormal combustion in an internal combustion engine and an arrangement for carrying out the method |
| 04/22/1981 | EP0027399A1 Device for detecting knocking in an internal-combustion engine, especially for an automotive vehicle |
| 03/31/1981 | US4259677 Method and apparatus for recording the compression pressure of internal combustion engines |
| 03/24/1981 | US4257260 Pressure sensing apparatus and engine analyzing apparatus |
| 03/18/1981 | EP0025077A1 A two-wire remote measuring system |
| 03/17/1981 | US4255965 Apparatus for detecting oscillations occurring during engine knock |
| 03/03/1981 | US4254354 Interactive piezoelectric knock sensor |
| 02/03/1981 | CA1094846A1 Integral manifold absolute pressure and ambient absolute pressure sensor and associated electronics |
| 01/21/1981 | EP0022565A1 Compression rate analyzer |
| 01/13/1981 | US4244222 Instrumentation probe |
| 01/13/1981 | US4244221 Removable instrumentation probe |
| 01/06/1981 | US4243009 Detonation control apparatus for outboard motor |
| 01/06/1981 | US4243007 Selective ignition timing |
| 12/23/1980 | US4240388 Method for controlling timing of spark ignition for an internal combustion engine |
| 12/02/1980 | CA1090871A1 Engine spark timing system with retard means and minimum burn timer |
| 11/18/1980 | US4233943 Device for detecting premature ignition in an internal-combustion engine |
| 11/18/1980 | US4233836 Knocking detection system for internal combustion engine |
| 11/11/1980 | US4232545 Apparatus for detecting pressure fluctuations in the combustion chamber of an internal combustion engine |
| 10/21/1980 | US4228679 Apparatus for measuring parameters of work diagram of piston machines |
| 10/16/1980 | WO1980002179A1 Correcting device for the combustion of engines of vehicles during transitional phases of operation |
| 10/15/1980 | EP0017200A1 Divided cuff for pressure measurement |
| 10/14/1980 | US4227403 Cylinder pressure monitoring system |
| 10/14/1980 | US4227402 Combustion monitoring system for fuel injected engines |
| 09/30/1980 | US4225802 Piezoelectric knocking detector for internal combustion engine |
| 08/20/1980 | EP0014452A2 Pressure transducer |
| 08/06/1980 | EP0013702A1 Transducer device for monitoring pressure |
| 05/28/1980 | EP0011167A1 Method and apparatus for registration of the compression pressure of internal-combustion engines |
| 05/06/1980 | CA1076838A1 Method and apparatus for measuring pressures |
| 04/30/1980 | EP0010436A1 A method of and apparatus for monitoring the operation of an internal combustion engine and a motor vehicle having an internal combustion engine monitored by such apparatus |
| 04/15/1980 | CA1075490A1 Fuel injected engine monitoring apparatus |
| 04/01/1980 | US4195531 Pressure detector using an averaging circuit |
| 03/18/1980 | CA1074011A1 Engine diagnosis from frequency components in exhaust |
| 03/11/1980 | US4192179 Piezoelectric transducer for fuel injection engine |
| 02/26/1980 | US4190027 Electronic spark timing advancing apparatus |
| 02/12/1980 | US4187720 Fuel line injection sensor |
| 01/01/1980 | CA1069178A Testing compression in engines from starter motor current waveform |
| 12/25/1979 | CA1068514A Intracranial pressure monitoring catheter |
| 12/11/1979 | CA1067716A1 Engine knock signal generating apparatus with noise channel inhibiting feedback |
| 10/02/1979 | US4169388 Integrated spark plug-combustion pressure sensor |
| 10/02/1979 | US4169387 Transducer for mechanical measured variables, especially a pressure transducer |
| 08/28/1979 | US4165650 Dual purpose pressure sensor |
| 08/28/1979 | US4165608 Sensor for rocket engines |
| 08/22/1979 | EP0003675A1 Pressure sensing apparatus |
| 08/07/1979 | US4163385 Engine knocking meter |
| 07/24/1979 | US4161878 Pressure fluctuation flowmeter |
| 07/17/1979 | US4161665 Magnetostrictive engine detonation sensor |
| 05/22/1979 | CA1055145A1 Transducer for measuring injection pressures of diesel engines |
| 05/15/1979 | US4154096 Circuit for producing a digital count representing the average value of a variable frequency |
| 05/08/1979 | US4153020 Method and apparatus for spark control of engine knock |
| 04/03/1979 | US4147054 Method and apparatus for determining the upper dead-center position with piston engines |
| 04/03/1979 | CA1051683A1 Diaphragm pressure fluctuation sensor |
| 03/27/1979 | US4146875 Pressure sensing device |
| 03/27/1979 | US4145932 Pressure transducer |
| 03/20/1979 | US4144746 Method for determining a measurement value proportional to the compression of an internal combustion engine |
| 03/06/1979 | US4142503 Signal indicating device on internal combustion engines |
| 12/26/1978 | US4131088 Multiple function pressure sensor |
| 12/12/1978 | CA1044043A1 Tachometer without physical connection to internal combustion engine |
| 11/21/1978 | US4126037 Compression test using battery voltage waveform during cranking |