Rocker arm

摘要

A rocker arm has a first roller for engaging a first rotatable cam surface, whereby at least part of the rocker arm can be pivoted by at least the first rotatable cam surface to move a valve to cause a first valve event, and a further roller for engaging a further rotatable cam surface, whereby at least part of the rocker arm can be pivoted by the further rotatable cam surface to move the valve to cause a second valve event which is different from the first valve event. The rocker arm is configurable in a first mode of operation in which one of the first and second valve events occur and a second mode of operation in which both the first and second valve events occur or the other of the first and second valve events occur.

主权项

1. A rocker arm, comprising:
a first body supporting a first axle on which a first roller configured to engage a first rotatable cam surface and a second roller configured to engage a second rotatable cam surface are mounted; and a second body supporting a second axle on which a further roller, configured to engage a further rotatable cam surface is mounted, wherein at least one of the first body and the second body of the rocker arm can be pivoted by at least the first rotatable cam surface acting on the first roller and the second rotatable cam surface acting on the second roller to move a valve to cause a first valve event, wherein at least the other of the first body and the second body of the rocker arm can be pivoted by the further rotatable cam surface to move the valve to cause a second valve event, wherein one of the first and second bodies is pivotally mounted with respect to the other of the first and second bodies, and one of the first and second axles defines a circular aperture and the other of the first and second axles extends through the circular aperture and wherein an outer diameter of the other of the first and second axles that extends through the circular aperture is smaller than a diameter of the circular aperture to permit relative pivotal movement of the first body and the second body when the first body and the second body are unlatched from each other.