| 摘要 |
A method of detecting a gap extending along a longitudinal axis and defined between a shoulder of a seat formed around a port in a cylinder head and an inboard axial end of a valve seat insert disposed in the seat includes disposing a distance sensor within the port, and moving one of the distance sensor and the cylinder head relative to the other of the distance sensor and the cylinder head along the longitudinal axis to generate relative movement between the distance sensor and the cylinder head. A radial distance is sensed perpendicular to the longitudinal axis during the relative movement between the distance sensor and the cylinder head to detect a change in the radial distance at an interface between the inboard axial end of the valve seat insert and the shoulder of the seat, thereby indicating an undesirable gap therebetween. |
