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DAF Euro-4 Heavy Duty Diesel Engine with TNO EGR system and CRT Particulates Filter
Technical Paper
2001-01-1947
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper reports on a study of the TNO venturi EGR system and the Johnson Matthey CRT particulates trap on a DAF 355 kW engine. The results obtained indicate that this EGR-CRT combination is an effective means to achieve EURO-4 emission level, while maintaining good fuel economy.
EGR strategy, injection timing and air-fuel ratio were optimised in such a way that good regeneration conditions were obtained across most of the engine operating map. Also transient EGR control is optimised to combine low NOx emission during the ETC with good driveability and good engine out particulates emission.
The size of the oxidation catalyst in the CRT was investigated. It appeared that the larger oxidation catalyst showed a better regeneration performance during a low temperature duty-cycle. Negative aspects of a larger oxidation catalyst are increased costs and increased NO2 emission (because of the catalyst ability to oxidise more NO into NO2).
In order to secure regeneration under all circumstances it was found necessary to develop an active regeneration control strategy. This strategy will temporarily increase exhaust temperature and NOx-PM ratio when a high back pressure is detected.
The EGR-CRT system is installed in a truck to investigate its performance and durability in practise.
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Verbeek, R., van Aken, M., and Verkiel, M., "DAF Euro-4 Heavy Duty Diesel Engine with TNO EGR system and CRT Particulates Filter," SAE Technical Paper 2001-01-1947, 2001, https://doi.org/10.4271/2001-01-1947.Also In
References
- Havenith C. Cartellieri W. Zelenka P. Development strategies to meet EURO-4 and 5 emission standards for heavy-duty diesel engines AVL motor und umwelt 99
- Havenith C. Verbeek R. Transient performance of a urea deNOx catalyst for low emissions heavy-duty diesel engine SAE 970185
- Cooper BJ Thoss JE Role of NO in Diesel Particulate Emission Control SAE 890404
- Allansson R Maloney CA Walker AP Warren JP Sulphate Production over the CRT: What Fuel Sulphur Level is Required to Enable the EU4 and EU5 PM Standards to be Met? SAE 2000-01-1875
- Baert R.S.G. Beckman D.E. Verbeek R.P. New EGR technology retains HD diesel economy with 21st Century emissions SAE 960848
- Baert R.S.G. Beckman D.E. Veen A. Efficient EGR technology for future HD diesel engine emission targets SAE 1999-01-0837
- Sturm W.L. Dekker H.J. Simulation and control of a HD diesel engine equipped with new EGR technology SAE 960871
- Warren J.P. Allansson R. Hawker P.H. Wilkins A.J.J. Effects on aftertreatment on particulate matter when using the Continuously Regenerating Trap (CRTTM)
- Ohno K. Shimato K. Taoka N. Santae H. Salvat O. Characterisation of SiC DPF for paaenger car SAE 2000-01-185
- Zikoridse G. Velji A. Heidrich E. Seguelong T. Naschke W. Kaiser F. Particulate trap technology for light duty vehicles with a new regeneration strategy SAE 2000-01-1924