A Variable-Radius/Length Engine

Paper #:
  • 920453

Published:
  • 1992-02-01
Citation:
Kajiwara, K., "A Variable-Radius/Length Engine," SAE Technical Paper 920453, 1992, https://doi.org/10.4271/920453.
Author(s):
Pages:
10
Abstract:
This paper presents the characteristics of a Variable- Radius/Length engine (V-R/L engine) which has an eccentric on the connecting rod big end. This is intended to improve the power output of short-stroke multi-valve engines. The V-R/L engine makes it possible to improve power output through high volumetric efficiency and to delay the ignition timing for best torque (MBT) through refined combustion-chamber shape. However, more improvements are required to apply the mechanism to high-speed engines because of increased friction losses.
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