Loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. One of the most important durability problems in diesel engines is due to the cracks valves bridge area. The purpose of this study is a thermo-mechanical analysis of cylinder heads of diesel engines using a two-layer viscoelasticity model. The results of the thermo-mechani...

loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. one of the most important durability problems in diesel engines is due to the cracks valves bridge area. the purpose of this study is a thermo-mechanical analysis of cylinder heads of diesel engines using a two-layer viscoplasticity model. in this article, mechanical prope...

The dC$ign of reciprocating compressor cylinder heads consi.Us of thr= main tasks: 1) calculation methods to determine !he aclual SUCS$C$, 2) dctctmination of the factors of safety given thC$C stresscs, 3) validation of these SlrCSSC$ with strain gage dala. This paper will address the first of thC$C tasks, namely, the calculalion of cylinder head Stn=ssCS. A gcncnlized procedure calculating str...

To eliminate the requirement for skilled workers in Video cassette recorder (VCR) cylinder assembly lines, an automatic adjustment system for VCR magnetic heads on a rotating cylinder unit has been newly developed. The reconstructed image quality is strongly affected by magnetic head setting errors, such as; ( I ) Setting angle error for two symmetrically positioned head. (2) Rotational angle e...

A key element for thermal stress analysis of engine blocks and cylinder heads is an accurate representation of the temperature distribution in the given component. In order to predict the temperature accurately, spatially resolved thermal boundary conditions from the cylinder are required. For the SI engine studied, the Zimont [1] model is used for the in-cylinder combustion and the heat transf...

Originally developed by NASA as high performance piston alloys to meet U.S. automotive legislation requiring low exhaust emission, the novel NASA alloys now offer dramatic increase in tensile strength for many other applications at elevated temperatures from 450°F (232°C) to about 750°F (400°C). It is an ideal low cost material for cast automotive components such as pistons, cylinder heads, cyl...