Patents
Sitemap › G01 - Measuring; Testing › G01L - Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure › 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
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)
04/1991
04/03/1991EP0419553A1 Method of operating an engine and measuring certain engine parameters
03/1991
03/13/1991EP0416559A2 Knock detecting system for internal combustion engine using heat quantities
03/05/1991US4996873 Washer-type pressure sensor
02/1991
02/26/1991US4995365 System for detecting engine ignition failures in an internal combustion engine
02/19/1991US4993387 Knock control system for internal combustion engine
02/12/1991US4991553 Engine controller equipped with knocking detector
02/07/1991DE4024339A1 Acceleration detector sensing IC engine knocking - has piezoelectric element, inertial wt. and output terminal stacked in cylindrical transducer element
02/06/1991EP0411580A1 System for detecting cylinder pressure in internal combustion engine
01/1991
01/23/1991EP0409166A2 Apparatus for detecting operating condition of internal-combustion engine
01/22/1991US4986129 Pressure sensor
01/16/1991EP0407397A1 Pressure transducer for determining the pressure in the combustion chamber of an internal combustion engine.
01/15/1991US4984905 Temperature and pressure detecting type spark plug
01/10/1991DE4020681A1 Internal cylinder pressure measurer for IC engine - selectively passes cylinder pressure detector signals to computer performing real=time pressure parameter derivation
01/10/1991DE3937641A1 Pressure sensor with piezoelectric and temp. compensation elements - enables temp. compensation without knowing temp. dependency of piezoelectric voltage
01/08/1991US4982608 High-pressure transducer
01/03/1991DE3933947C1 Combustion pressure determn. method for petrol-diesel engine - using acceleration sensors fitted at crankshaft bearings of engine in cylinder axial direction
12/1990
12/13/1990WO1990015243A1 Process for detecting and evaluating knock signals in the individual cylinders of an internal combustion engine
12/06/1990DE3917907A1 Klopfsignal-erfassungs- und auswerteverfahren zum betrieb eines otto-motors dicht unterhalb der klopfgrenze Knock signal detection and evaluation method for operating a spark-ignition engine just below the knock limit
12/06/1990DE3917905A1 IC engine efficiency optimisation system - uses detected engine knock and monitored air of engine cylinder working vol to adjust ignition timing
11/1990
11/28/1990EP0399069A1 Method to determine with a pressure sensor the combustion pressure in a cylinder of a combustion engine
11/28/1990EP0399068A1 Method for knocking control in combustion engines
11/22/1990EP0397748A1 Device for measuring a pulsating variable in an internal combustion engine.
11/22/1990EP0323956B1 Spark plug provided with a measurement device
11/13/1990US4969441 Knocking suppression apparatus for an internal combustion engine
11/13/1990US4969440 Knocking suppression apparatus for an internal combustion engine
11/13/1990US4969354 Intake pipe pressure detecting device
11/13/1990US4969353 Spark plug with a pressure measuring device
11/13/1990US4969352 Combustion pressure sensor
11/06/1990US4967710 Knock control apparatus for internal combustion engines
10/1990
10/31/1990EP0395622A2 Pressure sensor
10/31/1990EP0394540A1 Holding support for the piezoelectric tube of a pressure sensor
10/31/1990EP0394234A1 Method of detecting knocking in internal combustion engines.
10/30/1990US4967114 Acceleration detector
10/24/1990CN1010141B Explosion-test type electro/displacement converter device
10/23/1990US4964294 For an internal combustion engine
10/17/1990EP0392804A2 Engine controller equipped with knocking detector
10/17/1990EP0392650A1 Engine knock sensing system
10/17/1990EP0392486A1 Pressure sensor for the combustion chamber of an internal combustion piston engine
10/16/1990US4962663 Method of measuring atmospheric pressure for an internal combustion engine
10/11/1990DE3911554A1 Method and device for the detection of knocking signals
10/11/1990DE3911553A1 Method and device for the detection of knocking signals
10/10/1990CN1046039A Pressure transducer
10/09/1990US4961338 Vibration detecting device
10/02/1990US4959993 Acceleration detector
09/1990
09/25/1990US4958515 For use in an internal combustion engine
09/19/1990EP0387266A1 Ionisation sensor.
09/06/1990DE4003664A1 Controlling knock in spark ignition engines - uses microphone to pick=up engine sounds, frequency filter to detect knocking and varies firing angle of spark
08/1990
08/29/1990EP0383797A1 Process for determining and evaluating the combustion pressure of an internal combustion engine.
08/16/1990EP0381855A2 Misfire detection device
08/08/1990EP0290470B1 Pressure sensor
08/07/1990US4945876 System and method for detecting knocking in an internal combustion engine
08/07/1990US4945755 Acceleration detector with parallel ground paths
08/01/1990EP0298966B1 Pressure sensor
07/1990
07/31/1990US4944179 Vibration detector
07/24/1990US4943776 Device and a method for the detection of pinking in Otto engines
07/10/1990US4940033 Method of operating an engine and measuring certain operating parameters
07/04/1990EP0376024A2 Process and device for correcting a signal-processing circuit with respect to deviations from its elements due to manufacturing tolerances
06/1990
06/28/1990WO1990007051A1 System for monitoring and controlling engine performance
06/27/1990CN2058751U Multifunctional manometer
06/26/1990US4936277 System for monitoring and/or controlling multiple cylinder engine performance
06/12/1990US4932266 Pressure sensor
05/1990
05/31/1990WO1990005841A1 Engine management system
05/30/1990EP0370594A1 Engine management system
05/29/1990US4928530 Pressure transducer
05/09/1990EP0366681A1 Knock detection circuit with gated automatic gain control
05/01/1990US4920805 Pressure sensor having baffling means
04/1990
04/24/1990US4919099 Combustion monitoring
04/04/1990EP0361057A2 A device and a method for the detection of knocking in Otto engines
03/1990
03/22/1990WO1990002932A1 Method and apparatus for measuring detonation in an internal combustion engine
03/21/1990EP0359409A2 Non-resonating type knock sensor
03/20/1990US4909071 Spark plug pressure sensor
02/1990
02/27/1990US4903664 Spark ignition timing control system for internal combustion engine with fail safe system for cylinder pressure sensor
02/13/1990US4899711 Engine knock control system
02/13/1990US4899710 System and method for detecting and determining knocking in an internal combustion engine
02/06/1990US4898035 Pressure sensor having sealing member for sealing housing interior with respect to external space
02/06/1990US4898024 Piezoelectric pressure measuring instrument
01/1990
01/25/1990WO1990000680A1 Device for measuring pressure
01/23/1990US4895121 Method and apparatus for measuring detonation in an internal combustion engine
01/18/1990DE3824239A1 Messeinrichtung zur erfassung eines druckes Measuring means for detecting a pressure
01/17/1990EP0350612A2 Measuring arrangement for establishing pressure and temperature
01/02/1990US4890498 Pressure sensor
12/1989
12/27/1989CA1264079A1 Gated knock detector for internal-combustion engines
12/20/1989EP0346799A2 Knock control system for internal combustion engine
12/13/1989CN2049353U Portable pressure detector for vehicles
11/1989
11/28/1989US4884206 Process and processing circuit for the analog output signal of a sensor
11/21/1989US4881403 Spark plug with pressure sensor
11/21/1989US4881401 Knock detection system
11/16/1989WO1989011088A1 Detection of knocking signals in i.c. engines
11/16/1989WO1989011087A1 Method of detecting knocking in internal combustion engines
11/16/1989WO1989011031A1 Method of operating an engine and measuring certain engine parameters
10/1989
10/05/1989WO1989009384A1 Pressure transducer for determining the pressure in the combustion chamber of an internal combustion engine
09/1989
09/26/1989US4869095 Vibration detecting device
09/21/1989DE3907190A1 Spark plug having a pressure sensor
08/1989
08/15/1989US4856479 Ignition timing control apparatus for an internal combustion engine
08/10/1989WO1989007241A1 Device for measuring a pulsating variable in an internal combustion engine
08/09/1989EP0326898A1 Method of detecting misfiring in combustion engines
08/08/1989US4854174 Colinear fluctuating wall shear stress and fluctuating pressure transducer
07/1989
07/25/1989US4850229 Ballistics pressure transducer
07/25/1989US4850227 Pressure sensor and method of fabrication thereof
07/25/1989CA1257916A1 Knock detection circuit with gated automatic gain control
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