A new electromagnetic engine valve actuator with less energy consumption for variable valve timing |
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Authors: | Jinho Kim Dennis K Lieu |
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Affiliation: | (1) Department of Mechanical and Aerospace Engineering, Florida Institute of Technology, 116 F.W. Olin Engineering Complex, 32901 Melbourne, FL, USA;(2) Department of Mechanical Engineering of U. C. Berkeley, University of California, 5128 Etcheverry Hall, 94720 Berkeley, CA, USA |
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Abstract: | A variable valve timing (VVT) can improve fuel efficiency, reduce CO2 emissions and increase torque output enabling optimization
of these outputs at different engine conditions. To achieve VVT in internal combustion engine, new devices such as mechanical,
hydraulic, motor-driven and electromagnetic actuators have been developed in past years to replace the conventional camshaft
valve train system used currently. Among these, the electromagnetic actuator using solenoids is the most advanced system to
provide the most flexibility to valve timing, but it has critical drawback of high power consumption. In this paper, a new
electromagnetic engine valve actuator that uses permanent magnets to latch the valve is introduced. |
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Keywords: | Permanent magnet Solenoid Finite element analysis Linear actuator Variable valve timing |
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