VALVE ACTUATION SYSTEM

摘要

A valve actuation system is disclosed for use with an internal combustion engine. The valve actuation system may have a rocker shaft, a rocker arm pivotally mounted on the rocker shaft, at least one cam follower and a pushrod connecting the at least one cam follower to the rocker arm. The valve actuation system may also have a plurality of gas exchange valves, and a bridge connecting the rocker arm to the valves. The valve actuation system may further have at least one spring disposed around each of the valves and configured to bias each of the valves toward closed positions, and a rotocoil configured to rotatably connect the at least one spring to each of the valves. The rotocoil may have an internal chamfer at a bridge end with an angle of about 26-28°. The at least one spring may have an assembled load of about 750-850 N.

主权项

1. A valve actuation system, comprising:
a rocker shaft; a rocker arm pivotally mounted on the rocker shaft and having a first end and a second end; at least one cam follower; a pushrod connecting the at least one cam follower to the first end of the rocker arm; a plurality of gas exchange valves; a bridge connecting the second end of the rocker arm to the plurality of gas exchange valves; at least one spring disposed around each of the plurality of gas exchange valves and configured to bias each of the plurality of gas exchange valves toward closed positions; and a rotocoil configured to rotatably connect the at least one spring to each of the plurality of gas exchange valves, wherein:
the rotocoil has an internal chamfer at a bridge end with an angle of about 26-28° measured relative to a center axis of the rotocoil; andthe at least one spring has an assembled load of about 750-850 N.