Predicting the effects of transient heat conduction in low-heat-rejection engine components have been analyzed by applying instantaneous boundary conditions throughout a diesel engine thermodynamic cycle. This paper describes the advantages and disadvantages of one-dimensional finite difference and two-dimensional finite element methods by analyzing simple and complicated geometries like diesel bowl-in pistons. Also the performance characteristics of plasma sprayed zirconia, partially stabilized zirconia, and a monolithic reaction bonded silicon nitride ceramic materials are discussed and compared. Finite element studies have indicated that the steep temperature gradients associated with cyclic temperature swings in excess of 400 K may contribute to the failure of ceramic coatings near the corner joining the surface of the piston and the surface of the bowl for bowl-in pistons.
Transient Heat Conduction in Low-Heat-Rejection Engine Combustion Chambers
Sae Technical Papers
SAE International Congress and Exposition ; 1987
1987-02-01
Conference paper
English
Transient heat conduction in low-heat-rejection engine combustion chambers
Automotive engineering | 1987
|Combustion and combustion chamber for a low heat rejection engine
Automotive engineering | 1996
|Combustion and Combustion Chamber For a Low Heat Rejection Engine
SAE Technical Papers | 1996
|