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Road Map for Addressing Future On-Board-Diagnostic Challenges in Light and Heavy-Duty Diesel Engines
Technical Paper
2012-01-0895
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Since the 1990's regulatory requirements for On-Board-Diagnostics (OBD) have continuously evolved with an increasing application of advanced electronics and control systems that have been adopted for automotive applications. The current and future demands on emissions and performance requirements are pushing the envelope with respect to management of complex control software strategies, hardware components and their interactions. This further challenges the implementation of OBD. In order to build a robust monitor for a complex system which has minimum risk of false detection, a thorough understanding of both system and components is required.
In this paper, several methods will be presented that can be utilized to achieve a successful and robust diagnostic system implementation. Implementation begins with a discussion of the major challenges to achieve consistent performance in the base system control. A deep dive approach will provide new methodologies that can be applied to address the necessary diagnostics. This paper will address diagnostic fault handling based on symptoms, statistical methodologies for filtering out noise, and implementation of reference models for diagnostics. It will also discuss redefining the goal of OBD implementation on modern control systems that have multiple I/O as well as coupled and decoupled configurations.
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Authors
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Citation
Nanjundaswamy, H., Tomazic, D., Dahodwala, M., and Koehler, E., "Road Map for Addressing Future On-Board-Diagnostic Challenges in Light and Heavy-Duty Diesel Engines," SAE Technical Paper 2012-01-0895, 2012, https://doi.org/10.4271/2012-01-0895.Also In
References
- Nanjundaswamy, H. Tatur, M. Tomazic, D. Dahodwala, M. et al. “Development and Calibration of On-Board-Diagnostic Strategies Using a Micro-HiL Approach,” SAE Technical Paper 2011-01-0703 2011 10.4271/2011-01-0703
- Tatur, M. Laermann, M. Nanjundaswamy, H. Tomazic, D. “Alternative Pathways for Threshold HD-OBD Monitoring on SCR Emission Control Systems,” SAE 2009 On-Board Diagnostics Symposium
- Netterscheid, M. “Concepts of Future Diagnoses in the Area of Diesel Engine Exhaust Aftertreatment” 5 th EURO OBD conference 2011
- Hoffmann, R. Lehner, S. Schwarte, A. “OBD Concept for a Close Loop Controlled Direct-Drive-Injection System without injection Coding and without Additional Sensors” 5 th EURO OBD conference 2011
- Heywood, J B 1988 Internal Combustion Engine Fundamentals McGraw-Hill New York
- Pischinger, S 2005 Internal Combustion Engines II the Institute for Combustion Engines, RWTH, Aachen University