SGER: A Feasibility Study on Camless Engine Valve Sensing, Actuation, and Control for Synchronization with Varying Engine Speed

SGER项目的目标是对高性能无凸轮发动机运行所需的可变气门执行器的创新设计和控制方法进行可行性研究。完全灵活的无凸轮气门执行器和控制可以使更多的燃油效率和更少的污染车辆。该项目将包括两个方面：一是设计一种新颖的致动器和传感器，以满足完全灵活的无凸轮发动机气门运动要求；二是控制致动器，以生成精确的气门升程曲线，作为发动机曲柄角的函数。执行器、传感器和控制设计将处理类似时间尺度的混合电磁、液压和机电系统。研究结果可以应用于广泛的应用，其中对执行器/传感器尺寸、行程、动态运动和主从式电子凸轮同步控制的要求与该项目中解决的无凸轮发动机应用一样具有挑战性。

The objective of this SGER project is to conduct a feasibility study on innovative design and control methods for variable valve actuators needed for high performance camless engine operations. The fully flexible camless valve actuator and control can enable more fuel efficient and less polluting vehicles. The project will encompass two aspects: a novel actuator and sensor design for satisfying fully flexible camless engine valve motion requirement, and control of the actuator for generating precise valve lift profile as a function of the engine crank angle. The actuator, sensor, and control design will deal with mixed electromagnetic, hydraulic, and electromechanical systems of similar time scales. The results can be applied to a broad range of applications, where the requirements for actuator/sensor size, stroke, dynamic motion, and the master-slave type electronic cam synchronization control are as challenging as those of the camless engine application addressed in this project.