Der elektromechanische Ventiltrieb — Systembaustein für zukünftige Antriebskonzepte Teil 1

Application of electromagnetic actuators to a variable distribution system for automobile engines

“…As it was foreseen in the previous section, the real results differ from the calculated ones. The switching duration, measured to be 4.8 ms is not so performant as it is reported by other researchers [1], but it is comparable to other achievements [3,5,6] and enables a maximum rotation speed of the crank shaft at the value of 3000 rpm, which is acceptable for motor tests. The experimental control system consists of a PC, equiped with PC-DIO96, an I/O board from National Instruments, connected to the dual full bridge drivers L298, respectively, to optical position sensors, which provide the feedback.…”

“…These seem to be a good technical solution for fuel economy, power increasing and pollution diminishing, both for gasoline engines and diesel ones. When they will be commercially available, such systems will replace the classical cam-follower mechanisms and will enable computer control of the valves motion as concerns stroke, duration of the movement and frequency, following programmable laws as the essential difference from the actual mechanisms which have fixed and previously determined laws [1]. Additionally, electromagnetic actuated valves have independent movement.…”