Patents for G01M 15 - Testing of engines (13,067)
05/1998
05/12/1998US5750886 Engine emissions analyzer with diagnostic
05/12/1998CA2153606C Catalyst deterioration-detecting device for internal combustion engine
05/07/1998DE19645187A1 Verfahren und Vorrichtung zur Messung von Laufschaufelschwingungen Method and apparatus for the measurement of rotor blade oscillations
05/05/1998US5747681 Combustion state-detecting system for internal combustion engines
05/05/1998US5747679 Method for detecting combustion misfires
05/05/1998US5747678 Method for detecting crankshaft oscillations
04/1998
04/30/1998WO1998017989A2 Automotive engine misfire detection system including a bit-serial based recurrent neuroprocessor
04/29/1998EP0563066B2 Diagnostic device for detecting defective combustion in an internal combustion engine
04/28/1998US5744705 Method and apparatus for engine testing
04/28/1998US5744698 Accelerometric sensor for measuring the piston knock of an internal combustion engine
04/28/1998US5743233 Method for detecting knocking
04/22/1998EP0837307A1 Optical sensor for combustion chamber
04/22/1998EP0837234A1 Method and system for estimating a midbed temperature of a catalytic converter
04/22/1998CN1179826A Misfire detection dependent on intake air charge fluctuations
04/21/1998US5741964 Apparatus and method for detecting abnormality of air flow meter
04/21/1998US5741958 Method for detecting and documenting exhaust-gas relevant malfunctions of a motor vehicle having an internal combustion engine with the aid of on-board means
04/16/1998DE19641916A1 Misfiring identification method by evaluating fluctuations in speed e.g. for combustion engine
04/16/1998DE19580587C2 Device for detecting type of internal combustion engine fuel
04/15/1998EP0836075A1 Method for processing a plurality of signals
04/14/1998US5739418 Vibration pick-up and method of producing the same
04/14/1998US5739413 Forced dilution system and method for emissions measurement systems
04/14/1998US5737917 Device for judging deterioration of catalyst of engine
04/08/1998EP0834060A1 Device for knock recognition and control of a combustion engine
04/08/1998EP0679221B1 Electronic counting circuit for the timed measurement of a digital signal
04/07/1998US5737711 Diagnosis system for motor vehicle
04/07/1998US5736634 Apparatus and method for detecting combustion conditions of an internal combustion engine
04/07/1998US5736633 For distinguishing a cylinder identification signal pulse
04/07/1998US5735121 Air pump abnormality-detecting system for internal combustion engines
04/07/1998US5735120 Device for judging the deterioration of a catalyst of an engine
04/02/1998DE19742627A1 Automobile travel characteristics evaluation system
04/01/1998EP0833140A2 Diagnostic system
03/1998
03/31/1998US5734101 Device for detecting lean burn drive mode for a vehicle
03/31/1998US5734100 Device for diagnosing misfiring of a multi cylinder engine
03/26/1998DE19637094A1 Verfahren zum Bestimmen von Verbrennungsaussetzern A method for determining misfire
03/25/1998EP0831222A2 An abnormality detecting apparatus for an air temperature sensor
03/25/1998EP0831220A2 Combustion control device for internal combustion engine
03/24/1998US5732382 Method for identifying misfire events of an internal combustion engine
03/19/1998WO1998011416A1 Method of determining misfiring
03/19/1998DE19737396A1 Glow-plug for diesel engine
03/17/1998US5729452 Method and system for diagnosing and reporting failure of a vehicle emission test
03/17/1998US5728941 Misfire detecting apparatus using difference in engine rotation speed variance
03/17/1998US5728932 Of an internal combustion engine
03/12/1998WO1998010300A1 Process for inspecting the components of a system in a motor vehicle
03/11/1998EP0828153A1 Method and device for secure measurement and processing, as well as the checking of measurement data
03/11/1998CN2276153Y Step brass allowance measuring means
03/10/1998US5726352 Method of detecting misfires in a multicylinder internal combustion engine
03/05/1998DE19635839A1 Verfahren zum Prüfen des Bauteils eines Systems in einem Kraftfahrzeug A method for testing of the component of a system in a motor vehicle
02/1998
02/24/1998US5720260 Method and system for controlling combustion stability for lean-burn engines
02/24/1998CA2184224A1 Forced dilution system and method for emissions measurement systems
02/19/1998DE19734680A1 Selectively testing for leakage in combustion chambers of cylinders of IC engine
02/17/1998US5719330 Automotive igniton module diagnostic
02/12/1998WO1998005936A1 Internal combustion engine misfire detection method
02/12/1998DE19734714A1 Vorrichtung und Verfahren zum Testen der Leistung von Verbrennungsmotoren Apparatus and method for testing the performance of internal combustion engines
02/11/1998EP0823622A2 Apparatus and method for detecting misfires in internal combustion engine
02/11/1998EP0823546A1 A device for determining deterioration of a catalyst for an engine
02/11/1998EP0823046A1 Misfire detection dependent on intake air charge fluctuations
02/10/1998US5717595 Integrated automated vehicle analysis
02/10/1998US5717133 In an internal combustion engine
02/10/1998US5715791 Cylinder discriminating device for internal combustion engine
02/10/1998US5715780 Cam phaser position detection
02/10/1998US5715726 Method and system for the diagnosis of idling speed control system
02/10/1998US5715676 Method and apparatus for monitoring the starting behavior of a catalytic conversion system in an automotive vehicle
02/05/1998WO1998004990A1 Modified trimmed mean filtering for misfire detection
02/03/1998US5714673 Method and apparatus for monitoring engine control sensors
01/1998
01/29/1998WO1998003846A1 Method of testing assembled internal combustion engine
01/28/1998EP0763194A4 Misfire detection method and apparatus
01/28/1998EP0754326A4 Adaptive profile correction for rotating position encoders in reciprocating engines
01/28/1998EP0721627A4 Apparatus and method for variable windowed peak detection in a misfire detection system
01/27/1998US5712433 Exhaust gas measuring apparatus
01/27/1998US5712424 Method and apparatus for measuring diesel engine cylinder pressure
01/27/1998US5711272 Fuel property detection for an engine using engine speed
01/21/1998EP0819925A2 A preignition detection apparatus
01/21/1998EP0819215A1 Method for carrying out an ionic current measurement in a combustion engine using a lean fuel mixture
01/20/1998US5711021 Method for graphically displaying vehicle test data
01/20/1998US5710715 For detecting abnormalities by analyzing a vibration waveform
01/20/1998US5710512 Structure and production process for secondary voltage detector for engine
01/20/1998US5710375 Internal combustion piston engine
01/20/1998US5709192 Method for determining the differences between non-uniform cylinder torque moments in an internal combustion engine and application of the method
01/15/1998WO1998001728A1 Device for collecting analogue measurement signals for the acoustic diagnosis of test pieces
01/13/1998US5708200 Method for sensing faulty combustion in an internal combustion engine
01/13/1998US5706653 Secondary air supplying apparatus for internal combustion engine
01/07/1998EP0816820A2 Engine emissions analyzer with diagnostic
01/06/1998US5705742 System and method for testing an engine
12/1997
12/31/1997WO1997049978A1 Method and system for determining air/fuel ratio of an engine's combustion process from its exhaust emissions
12/31/1997WO1997049977A1 Model-based fault detection system for electric motors
12/30/1997US5703777 Parametric emissions monitoring system having operating condition deviation feedback
12/30/1997US5703283 Detrending engine positional data for rotating position encoders
12/30/1997US5701866 Malfunction diagnosis device for engine speed controller
12/29/1997EP0814257A2 A method and equipment for carrying out tests on a heat engine when cold and an engine designed to be tested by this method
12/24/1997WO1997048894A1 Method and device for detecting misfiring of internal combustion engines
12/23/1997US5701077 Misfire detecting device for gasoline internal combustion engine
12/23/1997US5699775 Failure diagnosis device of fuel evaporation preventive apparatus
12/18/1997WO1997047875A1 A method for detecting an ion current
12/17/1997EP0813050A2 Arrangement for identifying a cylinder in a multicylinder combustion engine
12/16/1997US5699253 Nonlinear dynamic transform for correction of crankshaft acceleration having torsional oscillations
12/16/1997US5699252 Error correction in measures of speed, acceleration, misfire detection and roughness
12/16/1997US5698780 Method and apparatus for detecting a malfunction in an intake pressure sensor of an engine
12/11/1997DE4042567C2 Faulty ignition detector for cylinder of IC engine
12/10/1997EP0811833A1 Pressure sensor for liquid or gas medium
12/04/1997DE19718766A1 Abnormality detection device for detecting leakage in motor vehicle fuel tank ventilation control system