Weight Reduction of Connecting Rod by Using High Strength Steel

Paper #:
  • 2015-01-1975

Published:
  • 2015-09-01
DOI:
  • 10.4271/2015-01-1975
Citation:
Kaiho, T., Yamada, S., Tsuruda, T., Kubota, M. et al., "Weight Reduction of Connecting Rod by Using High Strength Steel," SAE Technical Paper 2015-01-1975, 2015, https://doi.org/10.4271/2015-01-1975.
Pages:
6
Abstract:
Recently, further weight reduction of the car components are demanded for the purpose of fuel-efficient. In particular, the weight reduction of moving parts such as the connecting rod is indispensable for the weight reduction of neighboring parts. The lightweight connecting rod can be accomplished by decrease in cross section of rod part by using high strength steel. However, conventional high strength steel has bad machinability. Therefore, we developed a new high strength steel for connecting rod. The developed steel is based on middle carbon microalloyed steel, and vanadium content is increased to obtain the high yield ratio. As a result, strength of developed steel is 10% higher than the conventional steel. And a weight of new connecting rod can be reduced 8% by using developed steel. This connecting rod had been mass-produced for automobile engine from 2013.
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