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Sensors 2017, 17(12), 2940; doi:10.3390/s17122940

Design and Performance Evaluation of an Electro-Hydraulic Camless Engine Valve Actuator for Future Vehicle Applications

1
School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Korea
2
Samsung Electronics Co., Ltd., Gyeonggi-do 443-742, Korea
3
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 8 October 2017 / Revised: 2 December 2017 / Accepted: 12 December 2017 / Published: 18 December 2017
(This article belongs to the Special Issue Mechatronic Systems for Automatic Vehicles)
View Full-Text   |   Download PDF [5142 KB, uploaded 18 December 2017]   |  

Abstract

This paper details the new design and dynamic simulation of an electro-hydraulic camless engine valve actuator (EH-CEVA) and experimental verification with lift position sensors. In general, camless engine technologies have been known for improving fuel efficiency, enhancing power output, and reducing emissions of internal combustion engines. Electro-hydraulic valve actuators are used to eliminate the camshaft of an existing internal combustion engines and used to control the valve timing and valve duration independently. This paper presents novel electro-hydraulic actuator design, dynamic simulations, and analysis based on design specifications required to satisfy the operation performances. An EH-CEVA has initially been designed and modeled by means of a powerful hydraulic simulation software, AMESim, which is useful for the dynamic simulations and analysis of hydraulic systems. Fundamental functions and performances of the EH-CEVA have been validated through comparisons with experimental results obtained in a prototype test bench. View Full-Text
Keywords: camless engine; electro-hydraulic actuator; snubber design camless engine; electro-hydraulic actuator; snubber design
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Nam, K.; Cho, K.; Park, S.-S.; Choi, S.B. Design and Performance Evaluation of an Electro-Hydraulic Camless Engine Valve Actuator for Future Vehicle Applications. Sensors 2017, 17, 2940.

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