A Novel of Hybrid Magnet Engine Valve Actuator Using Shorted Turn for Fast Initial Response
Keywords:
Variable valve timing (VVT), hybrid magnet engine valve actuator (HMEVA), shorted turn, finite element analysis, permanent magnet (PM), electromagnet (EM).Abstract
A variable valve timing (VVT) can improve fuel
efficiency, reduce CO2 emission and increase torque output. To
achieve VVT in internal combustion engine, new devices such as
mechanical, hydraulic, motor-driven and electromagnetic
actuator 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 advance system to provide the most flexibility to valve
timing, but it has critical drawback of high power consumption.
This paper presents a novel design of Hybrid Magnet Engine
Valve Actuator (HMEVA) using shorted turn. A shorted turn is
placed into existing design in order to reduce the inductance of
coil and improve the initial response. Dynamic finite element
analysis using commercial electromagnetic solver “MAXWEL”
is performed to simulate the improvement of dynamic
characteristic of model
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