METHOD FOR DETERMINING THE POSITION OF A VALVE OF AN INTERNAL COMBUSTION ENGINE DURING A COLD TEST

摘要

The method involves illuminating or exposing a movable component e.g. valve (10), to a light source and determining discontinuity of light passage between the movable component and a corresponding component. A maximal light passage or no light passage is determined. The light is supplied to the movable component through an air intake channel. A light sensor is used for determining the intensity or the discontinuity of the light passage.