Variable valve phasing lift and duration

摘要

Various exemplary illustrations of a camshaft assembly for actuating valves of an engine are disclosed. The camshaft assembly may include a camshaft having a plurality of lobes, including at least one phase adjustable lobe configured to be selectively rotated with respect to the camshaft. The assembly may further include a hydraulic valve actuator in communication with a first lobe of the camshaft. The hydraulic valve actuator may be configured to selectively actuate at least one valve in communication with the hydraulic valve actuator in response to the at least one cam lobe.

主权项

1. A camshaft assembly for selectively actuating valves of an engine cylinder, comprising:
a camshaft having a plurality of lobes, including at least one phase adjustable lobe configured to be selectively rotated with respect to the camshaft; and a hydraulic valve actuator actuated by the at least one phase adjustable lobe of the camshaft, the hydraulic valve actuator configured to selectively actuate at least one valve in communication with the hydraulic valve actuator in response to the at least one phase adjustable lobe of the camshaft, the hydraulic valve actuator configured to selectively modify an input received from the at least one phase adjustable lobe of the camshaft such that the camshaft assembly is configured to adjust a phase and at least one of a lift and a duration of the at least one valve.