On a cam profile described as mostly inner base circle, the profiles between IBC and OBC are known as?

The term "ramps" refers to the sections of the cam profile that facilitate the transition of movement. In a cam profile characterized by mostly an inner base circle (IBC), the ramps represent the gradual slopes or inclines that connect the IBC to the outer base circle (OBC). These ramps are crucial for the smooth operation of the cam mechanism, as they dictate the rate at which the follower moves as it engages and disengages with the cam. A well-designed ramp ensures that the motion is controlled and reduces stress on the engine components during operation.

In the context of cam profiles, ramps play an essential role in timing and valve operation in internal combustion engines, allowing for precise control over the opening and closing of valves in relation to the camshaft's rotational movement.