Analysis of Compression Ignition Engine Cycle Based on Irreversible Thermodynamics

Ion Omocea

doi:10.4028/www.scientific.net/AMR.837.446

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 837Analysis of Compression Ignition Engine Cycle...

Analysis of Compression Ignition Engine Cycle Based on Irreversible Thermodynamics

Abstract:

We use a model that is based on the cycle behavior inlet pressure variation. This analysis revealed the two main regimes of operation marine propulsion engines. Pressure drop in the suction process can be seen from two points of view: this pressure drop is an active dissipation and at the same time is a passive dissipation, contributing to the deterioration of cycle infrastructure. Interference of the two effects is reflected by the appearance of a ψ_a^opt=0,3...0,35, for which indicated power P_ibecomes maximum in terms of given geometric and gazodynamic configurations. Respectively for a weighting of conductance gazodynamic imposed. When fuel flow is imposed, the analysis revealed that the share of shall be amended to variation of ψ_a, which involves the geometric and gazodynamic configuration variable. In this numerical analysis showed the existence of ψ_a^opt=0,1...0,15, for which indicated efficiency η_i is maximum. These findings are the basis for the complex optimization cycle program for four-stroke compression ignition engine.

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Periodical:

Advanced Materials Research (Volume 837)

Pages:

446-451

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.837.446

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Online since:

November 2013

Authors:

Ion Omocea

Keywords:

Conductance Gazodynamic, Efficiency, Main Regimes, Maximum Continuous Rating (MCR)

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References

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