VARIABLE DISPLACEMENT SOLENOID CONTROL

摘要

Methods are provided for improved control of valve activation/deactivation mechanisms. One example method comprises, adjusting an electromechanical actuator to actuate cylinder valve deactivation/activation mechanisms. The actuator is operated at multiple levels based on engine operating conditions.

主权项

1. An engine method, comprising:
adjusting an electromechanical actuator to slide cam-lobes across a camshaft to change cylinder valve opening durations, including operating the actuator at a first level without a valve transition, operating the actuator at a second level without a valve transition in response to an increased potential for a valve transition, and operating the actuator at a third level inducing a valve transition, the second level between the first and third levels.