Izvorni znanstveni članak
HEAT RELEASE MODELS - A COMPARATIVE ANALYSIS FOR ENGINE PERFORMANCE PREDICTIONS
O.K. Sag
; Maritime Faculty, Turkey
T. Akmete
; Maritime Faculty, Turkey
Sažetak
This paper deals with a theoretical investigation of the influence of different heat release rates on the performance curves of a diesel engine. The study was further extended to determine the theoretical optimum heat release rate diagram without exceeding the construction constraints of the engine. A marine diesel engine of 16 cylinders, 4 valve per cylinder, direct injection supercharged type was considered. A well proven computer programme for the complete simulation of diesel engines developed by the research team at ITU was employed in the study. The computer code is capable of simulating the unsteady gas flow in the manifolds, in cylinder processes and the turbocharger. The maximum combustion pressure, specific fuel consumption and effective power of the engine cylinders were compared for the different heat release rate cases. The time resolved pressure curves for the intake and exhaust manifolds were also included and the effects of different heat release rates on these diagrams were analysed.
Ključne riječi
Hrčak ID:
209577
URI
Datum izdavanja:
11.12.1996.
Posjeta: 320 *