Patent ID: 8955481
Filing Date: 2015-02-17
Classification: F01L,Y10T

Abstract:
1. A switchable roller finger follower having a high lift and a low lift mode for a valve train of an internal combustion engine, comprising: an inner lever having a slot in which a roller is mounted by a transverse axle; two separate outer arms that extend along longitudinal sides of the inner lever that are mounted for pivoting movement at one end of the inner lever by a swing pivot axle, the two separate outer arms each include a high lift cam contact surface located adjacent to the roller; the inner lever includes compression spring supports extending out from each of the longitudinal sides toward a respective one of the two separate outer arms, and each of the two separate outer arms includes a corresponding spring support located in a position facing a respective one of the compression spring supports of the inner lever; a compression spring is located on each of the longitudinal sides of the inner lever between the compression spring supports and the corresponding spring supports on the two separate outer arms; and a coupling arrangement is located between the inner lever and the two separate outer arms which in a locked position, locks the two separate outer arms to the inner lever at least in an activation direction of a valve, and in an unlocked position, allows the two separate outer arms to pivot relative to the inner lever.