• Corpus ID: 1115114

Modelling of Electromechanical Control of Camless Internal Combustion Engine Valve Actuator

@inproceedings{Chukwuneke2013ModellingOE,
  title={Modelling of Electromechanical Control of Camless Internal Combustion Engine Valve Actuator},
  author={Jeremiah Lekwuwa Chukwuneke and C. H. Achebe and Paul Chukwulozie Okolie and Obiora E. Anisiji},
  year={2013}
}

• J. Chukwuneke, C. Achebe, +1 author O. E. Anisiji
• Published 2013
• Engineering

This paper presents the modeling and control of internal combustion engine valve actuator mechanism, using variable valve actuation system, like electromechanical valve actuation system to flexibly control the engine valve timing and lift profile. In this paper, the prospects and possibilities of an electromechanical control of internal combustion engine valve to eliminate choking and backflow has been theoretically and technically analyzed. In principle, optimality in every engine condition can be attained by Camless valve trains. Electromechanical valve actuators are very promising in this context. A mathematical model of the system is developed to evaluate the effect of each of the design parameters, starting from the modeling of a single stage pressure reducing valve, the concept of modeling a real three land three way solenoid valve actuator for the clutch system in the automatic transmission is presented and these were validated with data provided from experiments with the real valve actuator on a test bench. A simulator in a Matlab for an input-output model is developed and significant improvements in fuel economy, engine performance, efficiency, maximum torque and power, pollutant emissions were achieved. A position feedback closed- loop controller that reduced the valve landing velocity from 0.55m/s to 0.16m/s with consistent transition time of 3.42ms were designed in a Matlab Simulink and implemented.