A Study on the Design of Electromagnetic Valve Actuator for VVT Engine

다국어 초록 (Multilingual Abstract)

Electromagnetic valve (EMV) actuation system is a new technology for improving fuel efficiency and at the same time reducing emissions in internal combustion engines. It can provide more flexibility in valve event control compared with conventional variable valve actuation devices. The electromagnetic valve actuator must be designed by taking the operating conditions and engine geometry limits of the internal combustion engine into account. To help develop a simple design method, this paper presents a procedure for determine the basic design parameters and dimensions of the actuator from the relations of the valve dynamics, electromagnetic circuit and thermal loading condition based on the lumped method. To verify the accuracy of the lumped method analysis, experimental study is also carried out on a prototype actuator. It is found that there is a relatively good agreement between the experimental data and the results of the proposed design procedure. Through the whole speed range, the actuator maintains proper performances in valve timing and event control.

목차 (Table of Contents)

• Abstract
  
• 1.Introduction
  
• 2.Design Parameters for Engine Application
  
• 3.Modeling for Dynamic, Magnetic Force, and Heat Transfer Analysis
  
• 4.Design Procedure of EMV Actuator
  
• 5.Conclusions
  
• Acknowledgment
  
• References