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Abstract

The electromagnetic valve actuator can deliver much improved fuel efficiency and reduced emissions in spark ignition (SI) engines owing to the potential for variable valve timing when compared with cam-operated, or conventional, variable valve strategies. The possibility exists to reduce pumping losses by throttle-free operation, along with closed-valve engine braking. However, further development is required to make the technology suitable for acceptance into the mass production market. This paper investigates the application of multiobjective optimization techniques to the conflicting objective functions inherent in the operation of such a device. The techniques are utilized to derive the optimal force-displacement characteristic for the solenoid actuator, along with its controllability and dynamic/steady state performance.

Keywords

solenoid multiobjective design optimization controllability automotive electromagnetic valve actuator

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Multiobjective analysis for the design and control of an electromagnetic valve actuator

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