liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Simulation of Emission Related Faults on a Diesel Engine
Linköping University, Department of Electrical Engineering.
2002 (English)Independent thesis Basic level (professional degree)Student thesisAlternative title
Simulering av emissionsrelaterade fel på en diesel motor (Swedish)
Abstract [en]

Today's legislation on exhaust gas emissions for heavy duty diesel (HDD) vehicles is more stringent than ever and will be even more tough in the future. More over, in a few years HDD vehicles have to be equipped with OBD (On-Board Diagnostics). This place very high demands on the manufacturers to develop better engines and strategies for OBD. As an aid in the process models can be used.

This thesis presents extensions of an existing diesel engine model in Matlab/Simulink to be able to simulate emissions during standardized european test cycles. Faults in the sensor and actuator signals are implemented into the model to find out if there is an increase or decrease in the emissions. This is used to create a fault tree where it can be seen why predefined emission thresholds are exceeded. The tree is an aid when developing OBD.

The results from the simulations showed that almost no faults made the emissions cross the thresholds. The only interesting faults were faults in the ambient temperature sensor and the injection angle actuator. This means that the OBD-system only needs to monitor a few components which implies a smaller system and less work.

Place, publisher, year, edition, pages
Institutionen för systemteknik , 2002. , 32 p.
LiTH-ISY-Ex, 3266
Keyword [en]
Technology, Diagnosis, OBD, engine modelling, emissions, fault tree
Keyword [sv]
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-1506OAI: diva2:18830
Available from: 2003-01-07 Created: 2003-01-07

Open Access in DiVA

fulltext(346 kB)6715 downloads
File information
File name FULLTEXT01.pdfFile size 346 kBChecksum SHA-1
Type fulltextMimetype application/pdf

By organisation
Department of Electrical Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 6715 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 1106 hits
ReferencesLink to record
Permanent link

Direct link