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Voice coil actuated variable valve timing system for spark ignition engines

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Voice coil actuated variable valve timing system for spark ignition engines

Khandaker, Md Forhad (2006) Voice coil actuated variable valve timing system for spark ignition engines. Masters thesis, Concordia University.

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Abstract

Electromechanical valve actuators have been investigated in recent literature to implement variable valve timing (VVT) in spark ignition vehicle engines. Various types of electromechanical actuators are being investigated to control engine valves independently from crankshaft and ultimately get full benefits from variable valve timing. This thesis investigates a new type of electromechanical actuator - voice coil actuator (VCA). The thesis addresses the modeling of the voice coil actuated engine valve system and proposes a novel control strategy using pulse width modulation (PWM) that achieves fast transitions and low seating velocities. A Lyapunov-based stability analysis of a discrete-time model of the closed-loop PWM system as well as an experimental validation of the static force characteristics of the VCA are also presented in the thesis

Divisions:Concordia University > Faculty of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Khandaker, Md Forhad
Pagination:xix, 152 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical and Industrial Engineering
Date:2006
Thesis Supervisor(s):Hong, Henry
ID Code:8916
Deposited By:Concordia University Libraries
Deposited On:18 Aug 2011 14:39
Last Modified:18 Aug 2011 15:03
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