Patent ID: 6250637
Filing Date: 2001-06-26
Classification: F02F

Abstract:
A sealing assembly for a crankshaft, comprising a sealing system for a crankshaft end and having a radial sealing element; track means for the radial sealing element; and detector means for detecting rotation of the crankshaft and including a rotatable element formed integrally with the track means, and a sensor cooperating with the rotatable element,wherein the sealing system comprises an annular structural element for mounting the sealing system on an engine block and around the crankshaft and further sealing elements formed, together with the radial sealing element, integrally with the annular structural element by vulcanization, the radial sealing element having a L-shaped main sealing lip formed of PTFE and a sealing lip formed of one of rubber and felt, and the further sealing elements including an elastomeric sealing element for providing surface sealing between the annular structural element and the engine block, and an elastomeric corner element for sealing a gap between the engine block and the sealing assembly;wherein the track means is formed as an annular sleeve for mounting on the crankshaft end and having an outer surface forming track for the radial sealing element of the sealing system; andwherein the rotatable element is formed as an outwardly extending flange formed at an end of the annular sleeve remote from the engine block, the flange having a knurled free edge formed by alternating teeth and gaps, and the sensor is mounted on the annular structural element opposite the knurled free edge of the flange of the annular sleeve and is connectable with an on-board computer for communicating a respective signal thereto upon detecting one of a tooth and a gap.