Effects of thermal barrier coating on gas emissions and performance of a LHR engine with different injection timings and valve adjustments

Ekrem Büyükkaya*, Tahsin Engin, Muhammet Cerit

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122 Atıf (Scopus)

Özet

Tests were performed on a six cylinder, direct injection, turbocharged Diesel engine whose pistons were coated with a 350 μm thickness of MgZrO 3 over a 150 μm thickness of NiCrAl bond coat. CaZrO3 was employed as the coating material for the cylinder head and valves. The working conditions for the standard engine (uncovered) and low heat rejection (LHR) engine were kept exactly the same to ensure a realistic comparison between the two configurations of the engine. Comparisons between the standard engine and its LHR version were made based on engine performance, exhaust gas emissions, injection timing and valve adjustment. The results showed that 1-8% reduction in brake specific fuel consumption could be achieved by the combined effect of the thermal barrier coating (TBC) and injection timing. On the other hand, NOx emissions were obtained below those of the base engine by 11% for 18° BTDC injection timing.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1298-1310
Sayfa sayısı13
DergiEnergy Conversion and Management
Hacim47
Basın numarası9-10
DOI'lar
Yayın durumuYayınlandı - Haz 2006
Harici olarak yayınlandıEvet

Finansman

This study has been financially supported by The Scientific and Research Council of Turkey (TUBITAK-MISAG-30). TUBITAK’s support is greatfully acknowledged.

FinansörlerFinansör numarası
Scientific and Research Council of TurkeyTUBITAK-MISAG-30

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