EGZOS SİSTEMLERİNDE DEPOZİT TESTLERİ VE DEPOZİT DOZLAMA HARİTASININ ÇIKARILMASI

Öz

Bu çalışmada, FORD OTOSAN tarafından tasarlanan egzos sistemlerinin deposit testleri tamamlanmış ve deposit haritalama algoritması geliştirilerek, ideal dozlama değerlerine ait deposit-haritası geliştirilmiştir. Testler, 36 test noktası için koşulmuştur. Testler sonrasında, hesaplanan sonuçlar MATLAB programı kalibrasyon modülü yardımıyla optimize edilmiştirve C++ tabanlı bir kod yardımıyla deposit haritası oluşturulmuştur. Bu harita sayesinde, uygun sozlama kalitesi, ideal sıcaklık değerleri öngörülebilir hale gelmiştir. Harita değerleri girdi olarak kullanılarak, deposit oluşmayan egzos sistemleri elde edilebilir hale gelmiştir

Anahtar Kelimeler

• Depozit oluşumu
• SCR sistemleri
• depozit testleri
• depozit-harita algoritması
• depozit haritası

DEPOSIT TESTING IN EXHAUST SYSTEMS AND DEPOSIT MAPPING STRATEGY

Öz

In this study, deposit formation tests of a designed exhaust system of FORD is completed, deposit mapping algorithm is created by in-house code and a map of optimum dosing is generated. Tests are repeated for 36 testing points. After the tests, measured data is optimized in MATLAB and with calibration module using a C++ based algorithm, deposit map is created. With the help of deposit map, exact dosing quantity and optimum temperature values can be predicted. By taking the calculated map values in deposit map as input, non-deposit exhaust system can be achieved.

Anahtar Kelimeler

• Deposit formation
• SCR system
• deposit testing
• deposit-map algorithm
• deposit map

Kaynakça

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5. Geas I., 2002, Performance of a Urea SCR System combined with a PM and fuel optimized Heavy-duty diesel engine able to achieve the Euro V emission limits, SAE Paper, 2002-01-2885.
6. Gekas et al, 2002, Urea-SCR Catalyst System Selection for Fuel and PM Optimized Engines and a Demonstration of a Novel Urea Injection System, SAE paper 2002-01-028.
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8. Heuvel, van den, 1998, In-cylinder flow analysis for production-type Internal-combustion engines, Technische Universiteit Eindhoven DOI: 10.6100/IR517108.

9. Smith, H., Lauer, T., Mayer, M., and Pierson, S., 2014, Optical and Numerical Investigations on the Mechanisms of Deposit Formation in SCR Systems, SAE Int. J. Fuels Lubr. 7(2), DOI: 10.4271/2014-01-1563.2014. Walker et al, Development of an Ammonia/SCR NOx Reduction System for a Heavy Duty Natural Gas Engine, SAE Paper 921673.