Advanced Optimization Techniques in Valvetrain Design 932004
In this paper we describe the application of optimization techniques to the design of valvetrains in high revving internal combustion engines. The methods presented are based on parameter optimization [1] and the minimum principle by Pontrjagin [2] and will be applied to cam lobe and valve spring optimization, aiming at reducing oscillation amplitudes and improving control of the valvetrain over a broad speed range.
To put the task of optimization into context the engineering requirements for valvetrains and methods to allow their computer based analysis are described. Furthermore principle considerations for valve event curve generation and parametrization, and on optimization techniques are discussed. Based on these fundamentals, optimization aims and constraints are formulated. Furthermore different examples of the application of automated optimization are presented in the area of cam profile optimization and valve spring optimization. The comparison with measurements for an optimized valve spring design, which shows a significant improvement against the base line, finally proves the validity of the presented findings.
Citation: Ernst, R., Schamel, A., and Meyer, J., "Advanced Optimization Techniques in Valvetrain Design," SAE Technical Paper 932004, 1993, https://doi.org/10.4271/932004. Download Citation
Author(s):
Roland Ernst, Andreas R. Schamel, Jürgen Meyer
Affiliated:
Ford Motor Co.
Pages: 19
Event:
International Pacific Conference On Automotive Engineering
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Reducing Vehicle Noise and Vibration-SP-0991, SAE 1993 Transactions: Journal of Engines-V102-3
Related Topics:
Optimization
Combustion and combustion processes
Valves
Springs
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