Measurement and Simulation of Valve Motion

Paper #:
  • 931901

Published:
  • 1993-11-01
Citation:
Tani, H., Tokoro, H., Yoshikawa, K., Morita, S. et al., "Measurement and Simulation of Valve Motion," SAE Technical Paper 931901, 1993, https://doi.org/10.4271/931901.
Pages:
10
Abstract:
The valve motion of a direct-acting valve train was measured, and an equivalent model with the main object of the jump and bounce occurrence and the valve spring stresses was developed, as described below: (1) The jump and bounce were clarified by direct measurement at the positions they occurred. (2) The equivalent model was developed which features the contact elements and the valve spring model with two or more masses per coil and the function of coil contact. (3) Based on the experimental results, identification of parameters and verification of the model were performed. It was proved that the simulation corresponded with the experimental results. (4) Using this model, the accurate prediction of the motions and stresses of reciprocating components becomes possible in the design process. (5) Consequently, a synthetic tool for the design and evaluation for valve trains driven at higher speed is completed.
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