Search results for "On-board diagnostics"

showing 3 items of 3 documents

Statistical issues in the development of an automotive on-board diagnostics

2008

The automotive on-board diagnostics (OBD) is a complex system whose aim is to monitor the state-of-health of another complex system, i.e. the vehicle engine. OBD aimed at the containment of polluting exhaust emissions is nowadays compulsory on every vehicle model introduced into the market. Increasingly stringent regulations and ever more demanding customers push from opposite sides towards a perfect working of OBD systems. Therefore manufacturers are globally interested in the high robustness and reliability of such critical systems. The aim of this presentation is to give an insight into the main statistical problems arisen during an extensive research project carried out in collaboration…

Robust DesignSettore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaOn-Board Diagnostics
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A robust calibration methodology for an On-Board Diagnostic car system

2006

New car models are now by law equipped with on-board diagnostic (OBD) systems aimed at monitoring the state of health of strategic components that ensure low levels of polluting exhaust emissions. During development phases, for each new car model, the OBD system must be finely calibrated. This article presents a robust calibration methodology taking into account sources of variability mainly due to production process, operating, and environmental conditions. The methodology enables us to evaluate the false alarm and failure to detect risks intrinsically related to the adopted calibration. An application concerning an upstream oxygen sensor monitored by the OBD is presented.

EngineeringState of healthCalibration (statistics)business.industrySettore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaIndustrial and Manufacturing EngineeringAutomotive engineeringFault detection and isolationOn-board diagnosticsApplications in engineering and industry Fault detection Hypothesis testing On-board diagnostics Robust parameter designUpstream (networking)False alarmSafety Risk Reliability and QualityRobust parameter designbusinessSimulationStatistical hypothesis testing
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Statistics-driven Development of OBD Systems: An Overview

2006

Automotive on-board diagnostic (OBD) systems are designed to keep critical components under control during vehicle functioning, and to alert the driver in case of severe malfunctions. OBD systems aimed at reducing polluting emissions are mandatory on new motor vehicles. Some research projects conducted in cooperation between universities and the automotive industry have been quite successful in terms of knowledge advancement and industrial gain. An updated overview of the adopted methodologies and results obtained are given in this article. Such results can be valuable for both theorists and practitioners, since they witness the use of statistics as a powerful catalyst of technical progress…

Computer sciencebusiness.industryControl (management)Automotive industrystatistical monitoringManagement Science and Operations ResearchWitnessrobust parameter designdegradation modelfault detectionTechnical progressStatistical monitoringOn-board diagnosticsStatisticshypothesis testingapplications in engineering and industryon-board diagnosticpolluting emissionsSafety Risk Reliability and Qualitybusiness
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