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

Paper #:
  • 2010-01-1315

Published:
  • 2010-04-12
Citation:
Gopal, M., Varatharajan, S., and Gokhale, K., "Evaluation of Cylinder Head Bolts for Torque - Tension Characteristics for Ensuring Sealing Performance of Single Layer Steel Gasket," SAE Technical Paper 2010-01-1315, 2010, https://doi.org/10.4271/2010-01-1315.
Pages:
7
Abstract:
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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