| Patents for G01M 15 - Testing of engines (13,067) |
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| 12/04/1997 | DE19622042A1 Detecting and correcting errors in time measurement of rotating shafts esp. for IC engine crankshaft |
| 12/02/1997 | US5693872 Method and apparatus for testing preconditioned vehicle exhaust emission |
| 11/27/1997 | DE19620440A1 Diagnostic device for electronic vehicle control, especially for commercial vehicle |
| 11/26/1997 | EP0809096A1 Apparatus and method for measuring relative compression in the cylinders of an internal combustion |
| 11/25/1997 | US5691469 In an internal combustion engine |
| 11/20/1997 | DE19626689C1 Common-rail fuel injection system monitoring method |
| 11/20/1997 | DE19620038A1 Procedure for monitoring fuel metering system for IC engine |
| 11/20/1997 | DE19615448A1 Vorrichtung zur Klopferkennung und Regelung einer Brennkraftmaschine A device for detecting knocking and controlling an internal combustion engine |
| 11/18/1997 | US5689065 Combustion state-detecting system for internal combustion engines |
| 11/18/1997 | US5687692 Combustion state determination method of internal combustion engine, as well as combustion state control method and combustion state control system for internal combustion engine |
| 11/12/1997 | EP0806566A2 Misfire detector using different methods for high and low engine speeds |
| 11/12/1997 | EP0805963A1 Detrending engine positional data for rotating position encoders |
| 11/11/1997 | US5686672 In a load transmitting member |
| 11/05/1997 | EP0650587B1 Process and device for detecting misfiring |
| 11/05/1997 | CN2266738Y Synthetic parameter tester demarcating instrument for engine |
| 11/04/1997 | US5684757 Electronic circuit device for anaysis of a digital signal from a rotational position transmitted |
| 10/30/1997 | WO1997040356A1 Device for knock recognition and control of a combustion engine |
| 10/30/1997 | DE19713104A1 Method for combustion control of IC engine throughout speed range |
| 10/30/1997 | DE19712641A1 Übergabeeinrichtung für Rohrschüsse Transfer device for pipe sections |
| 10/28/1997 | US5682317 Virtual emissions monitor for automobile and associated control system |
| 10/28/1997 | US5680849 Purging of evaporated fuel to engine intake with engine fuel correction upon detection of malfunction in purging system |
| 10/23/1997 | WO1997039323A1 Method for calculating the torque of an internal combustion engine |
| 10/23/1997 | DE19643617A1 Cylinder distinguishing device for IC engine |
| 10/22/1997 | EP0720735A4 An acceleration based misfire detection system and method with improved signal fidelity |
| 10/22/1997 | CN1162559A Vibration receiver and manufacturing method therefor |
| 10/21/1997 | US5679890 Fault diagnostic apparatus for evaporated fuel purging system |
| 10/21/1997 | US5678520 Engine control unit for an internal combustion engine |
| 10/15/1997 | CN1162114A Method for diagnosis of combustion intermittence |
| 10/08/1997 | EP0799983A2 Method of detection of angular velocity and torque in an internal combustion engine |
| 10/08/1997 | EP0665969A4 State estimator based exhaust gas chemistry measurement system and method. |
| 10/07/1997 | US5675080 Abnormality detecting method and apparatus for exhaust gas recirculation control system of internal combustion engine |
| 10/07/1997 | US5675078 Engine ignition timing device |
| 10/07/1997 | US5675072 Combustion condition detector for internal combustion engine |
| 10/02/1997 | WO1997036097A1 Process for recognizing irregularities in combustion processes in a multiple cylinder diesel internal combustion engine |
| 10/02/1997 | DE19612541A1 Vibration pick-up with pressure sleeve in housing e.g. for engine knock sensor |
| 10/01/1997 | CN2263787Y Tester for internal-combustion engine performance parameter |
| 09/23/1997 | US5671158 Apparatus and method for effecting wireless discourse between computer and technician in testing motor vehicle emission control systems |
| 09/23/1997 | US5670715 Method of diagnosing a mechanism for improving combustion in an internal combustion engine and apparatus therefor |
| 09/23/1997 | US5670713 Apparatus and method for recognizing misfire occurrence in multi-cylinder internal combustion engine |
| 09/18/1997 | DE19636713A1 Fault-diagnosing system for fuel vaporisation prevention system for engine |
| 09/18/1997 | DE19610215A1 Motor vehicle IC engine combustion failure detection method |
| 09/16/1997 | US5668725 Internal combustion engine misfire detection |
| 09/10/1997 | EP0793803A1 Process for detecting misfiring by assessing rotation speed variations |
| 09/10/1997 | EP0609451B1 Method of detecting misfire by utilizing variation of rotation of crankshaft |
| 09/09/1997 | US5664548 Apparatus for detecting trouble in exhaust-gas recirculation system |
| 09/04/1997 | DE19708225A1 Function diagnostic system for exhaust fume cleaning device of internal combustion engine |
| 09/04/1997 | DE19607574A1 Exhaust gas analysis system for engines powered by alcohol fuels |
| 09/04/1997 | DE19607506C1 Measuring exhaust gas from alcohol-containing fuel-driven engine |
| 09/04/1997 | DE19607461A1 Detecting and documenting malfunctions related to exhaust gas of vehicle fitted with IC engine |
| 09/02/1997 | US5663493 Apparatus and method for measuring relative compression |
| 08/28/1997 | DE19607284A1 Detecting and documenting error functions relating to exhaust of vehicle |
| 08/27/1997 | CN2261022Y Standardization instrument of detector for diesel engine comprehensive parameter |
| 08/21/1997 | WO1997022786A3 Process for detecting cyclical fluctuations in combustion in an internal combustion engine |
| 08/19/1997 | US5659133 High-temperature optical combustion chamber sensor |
| 08/12/1997 | US5657233 Integrated automated vehicle analysis |
| 08/12/1997 | US5656768 Method for determining the moment of inertia |
| 08/07/1997 | WO1997020195A3 Process for detecting misfires in an internal combustion engine |
| 07/31/1997 | WO1997027461A1 Misfire detection dependent on intake air charge fluctuations |
| 07/31/1997 | WO1997027400A1 Measuring circuit for sensing ionisation within a cylinder of a combustion engine |
| 07/29/1997 | US5652380 Apparatus and method for detecting output fluctuations of an internal combustion engine, and apparatus and method for controlling the engine |
| 07/24/1997 | WO1997026522A1 Method of controlling ignition in a multicylinder internal combustion engine |
| 07/24/1997 | DE19601593A1 Verfahren zum Steuern der Zündung in einer Mehrzylinder-Brennkraftmaschine A method for controlling the ignition in a multi-cylinder internal combustion engine |
| 07/23/1997 | EP0632864B1 Arrangement for determining the parameters of an internal combustion engine |
| 07/23/1997 | EP0592628B1 Method for monitoring engine torque |
| 07/22/1997 | US5650565 Mini-dilution apparatus and method for exhaust emission testing |
| 07/15/1997 | US5648602 Internal combustion engine misfire detection apparatus |
| 07/15/1997 | US5647668 Method for generating a signal relating to a temperature in the exhaust system of an internal combustion engine |
| 07/08/1997 | US5646344 Device for determining a pulsating air mass flow in an internal combustion engine |
| 07/08/1997 | US5646340 Analytical tachometers |
| 07/03/1997 | DE19617160C1 Exhaust gas particle measurement, esp. for IC engines |
| 07/02/1997 | EP0781374A1 Electronic engine load and revolution sensing device |
| 06/26/1997 | WO1997022786A2 Process for detecting cyclical fluctuations in combustion in an internal combustion engine |
| 06/26/1997 | DE19653110A1 Fault diagnosis device for vehicle IC engine revs rate controller with two induction air quantity matching valves |
| 06/26/1997 | DE19548684A1 Exhaust-related malfunction of vehicle detecting and documenting method |
| 06/19/1997 | DE19601507C1 Flame blow back tester for engine component groups |
| 06/19/1997 | DE19547058A1 Verfahren zur Erkennung von Verbrennungsaussetzern Method for detecting combustion misfires |
| 06/18/1997 | CN1152122A Method of testing pressure relief |
| 06/17/1997 | US5639960 Misfire detecting method and apparatus for an internal combustion engine |
| 06/17/1997 | US5639957 Method and apparatus for performing modal mass analysis of exhaust gas from motor vehicle |
| 06/11/1997 | EP0778406A2 Apparatus and method for detecting abnormality of air flow meter |
| 06/10/1997 | US5638278 Apparatus for detecting an occurence of misfiring in an engine cylinder |
| 06/10/1997 | US5637792 Exhaust gas sampler |
| 06/05/1997 | WO1997020195A2 Process for detecting misfires in an internal combustion engine |
| 06/05/1997 | WO1997013064A3 Diagnostic system particularly for an engine management system |
| 06/05/1997 | DE19545008A1 Monitoring cyclical working machine for early detection of machine alterations |
| 06/05/1997 | DE19544613A1 Dynamic correction method for top dead centre when evaluating cylinder internal pressure characteristic of I.C. engine |
| 06/04/1997 | EP0777047A1 Method to test the cabling of solenoid-actuated injection valves |
| 06/04/1997 | EP0777041A2 An internal combustion engine, an engine crankcase gas blow-by sensor and a method of evaluating performance of an internal combustion engine |
| 05/29/1997 | WO1997019334A1 Detrending engine positional data for rotating position encoders |
| 05/28/1997 | EP0775894A2 Rotational machinery analysis |
| 05/28/1997 | EP0775816A1 V-type piston engine with measurement pickup device |
| 05/28/1997 | EP0775302A1 Internal combustion engine torque measurement device and method |
| 05/28/1997 | DE19543784A1 Data handling device for vehicle diagnosis tester |
| 05/27/1997 | US5633798 Method and apparatus for measuring octane number |
| 05/27/1997 | US5633456 Engine misfire detection with digital filtering |
| 05/27/1997 | US5632247 Preignition detecting system |
| 05/21/1997 | EP0774110A1 Process and method for the detection of misfire in an internal combustion engine |
| 05/21/1997 | EP0647317B1 Adaptive method of cylinder misfire detection in an internal combustion engine |
| 05/21/1997 | CN2254548Y Measuring protector with programmable logic unit for diesel engine |
| 05/20/1997 | US5631831 Diagnosis method for vehicle systems |