Browse Publications Technical Papers 2011-01-0747

System of the Automatic Preventive On-Line Monitoring and Diagnostics of Car Engines on the Basis of the New Methods of Preventive Diagnostics 2011-01-0747

This paper introduces architecture of an integrated system of preventive diagnostics and mathematical and computational methods, based on which such a system is being developed.
The present work aims to:
  • describe the methods of preventive diagnostics based on mathematical models and computing algorithms, allowing to detect the hidden harbingers of engine dysfunctions and future failures;
  • describe the architecture of the system of preventive diagnostics, its further evolution;
  • describe the process of integration of preventive diagnostics system to the car engine.
A necessary condition for the development system of preventive diagnosis is the condition of their economic efficiency, including the requirement of low cost sensors and computing systems of diagnostics.
The paper shows:
  • A set of telemetry data for preventive diagnostics should include data of the crankshaft rotation angle sensor and data of vibrations of the engine case, received by means of the sensor control of vibrations installed additionally on its case;
  • The basis for the analysis of preventive signs of dysfunction and future failures of engine is the analysis of stochastic components in indications of established sensors, crankshaft rotation angle sensor and vibration sensor. The greatest number of hidden preventive diagnostic signs is defined by the analysis of stochastic components of signals from the vibration sensor.
  • Algorithms for detecting of preventive signs of dysfunctions of the engine represent the analysis of multidimensional empirical probability distribution functions of stochastic components in signals of crankshaft rotation angle sensor and vibration sensor.
Along with the analysis of multidimensional distribution functions such characteristic as K-complexity, K-entropy of stochastic trajectory of process is introduced and analyzed.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 17% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

ADACS: Advanced Diagnosis for Time-Triggered Automotive Communication Systems


View Details


Neural Network Based Throttle Actuator Model for Controller


View Details


Application of Engine Load Estimation Method Using Crank Angular Velocity Variation to Spark Advance Control


View Details