Browse Publications Technical Papers 2010-01-1315
2010-04-12

Evaluation of Cylinder Head Bolts for Torque - Tension Characteristics for Ensuring Sealing Performance of Single Layer Steel Gasket 2010-01-1315

IC Engine manufacturers are constantly in pursuit of better sealability of cylinder head and engine block interface for meeting performance and durability targets. In order to overcome variation in torque - tension characteristics of cylinder head bolt because of friction variations, yield based clamping are being extensively adopted. Current study is done on torque - tension characteristics of a cylinder head bolt with a controlled quality. The paper enumerates the experimental setup representing a sub 1 liter all aluminum engine's head-block joinery. Studies on torque - tension characteristics of cylinder head bolt and the effect of sealing interface using a cost effective single layer steel gasket are being discussed in the paper.Subject work has led to a successful implementation of angular torque parameters on head bolts to meet functional and durability targets.

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