Cranktrain Component Conceptual Design and Weight Optimization

Paper #:
  • 980566

Published:
  • 1998-02-23
Citation:
Mikulec, A., Reams, L., Chottiner, J., Page, R. et al., "Cranktrain Component Conceptual Design and Weight Optimization," SAE Technical Paper 980566, 1998, https://doi.org/10.4271/980566.
Pages:
11
Abstract:
Powertrain Engineering Tool (PET) [1, 2, 3], developed at Ford Powertrain and Vehicle Research Laboratory, is a powertrain computer model that allows rapid development of preliminary powertrain component geometry, and evaluation of engine performance and friction. Based on specified design objectives such as engine torque, power and geometric constraints, PET calculates the powertrain component geometry by employing its integrated design rules and a non-linear SQP-based (Sequential Quadratic Programming) geometry optimizer. PET also generates parametric solid models of powertrain systems based on its integrated dynamic component assembly schemes and solid modeling database. The cranktrain system consists of high-speed moving and rotating components. Complex dynamic analysis is typically required to achieve optimum cranktrain component design. This paper discusses development of a systematic approach in the calculation of optimal cranktrain component geometry. The procedures, methodologies and design rules for various components are implemented within PET. Computer simulation results for piston pin sizing, piston assembly weight and piston skirt friction will also be presented.
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