Sliding cam system havnig slide grooves and locking means

Abstract

A sliding cam system having sliding cams ( 1 ) which are arranged so as to be non- rotatable yet axially displaceable on a main shaft, preferably on a shaft serving as the camshaft of a reciprocating internal combustion engine, having a preferably electromagnetically operable device including at least one extendable actuator pin ( 6 ) for displacing the sliding cams into different axial positions via the displacement grooves ( 3 ) on the circumference of the sliding cams, wherein the displacement grooves interact with the actuator pin ( 6 ) and a displacement device ( 5 ) is fixedly arranged on a component of the internal combustion engine. The system has a device for locking the sliding cams ( 1 ) in different axial positions, and the locking device includes at least one recess associated with each axial position. The recesses are in the form of locking grooves ( 2 ) on a circumference of the sliding cams ( 1 ) and the entry and exit regions of the displacement grooves ( 3 ) lie in the planes of two adjacent locking grooves ( 2 ).

1 . A sliding camshaft assembly comprising sliding cams that are arranged on a main shaft in a rotationally locked but axially displaceable manner, and an adjustment device having a movable actuator pin for adjusting the sliding cams into different axial positions by displacement grooves in the sliding cam that interact with the actuator pin on a periphery of the sliding cams, the adjustment device is arranged fixed in position on a component adjacent to the sliding cams, and a locking device that locks the sliding cams in the different axial positions, the locking device has at least one recess allocated to each of the axial positions, the recesses are formed as locking grooves on the periphery of the sliding cams and run-in and run-out areas of the displacement grooves lie in planes of two adjacent locking grooves. 
     
     
         2 . The sliding cam system according to  claim 1 , wherein the displacement grooves are arranged in a peripheral area of the displacement cams lying deeper relative to the locking grooves. 
     
     
         3 . The sliding cam system according to  claim 1 , wherein the actuator pins are in active engagement with the locking grooves in a base position and contact the displacement grooves in a run-out stage. 
     
     
         4 . The sliding cam system according to  claim 1 , wherein the locking grooves are formed by disk-shaped guide contours. 
     
     
         5 . The sliding cam system according to  claim 1  a width of the displacement grooves corresponds to a width of the locking grooves. 
     
     
         6 . The sliding cam system according to  claim 1 , wherein the adjustment device has locking elements that are in active engagement with the locking grooves. 
     
     
         7 . The sliding cam system according to  claim 6 , wherein the locking elements are formed as sleeves that enclose the actuator pins. 
     
     
         8 . The sliding cam system according to  claim 7 , wherein the sleeves have lateral flattened sections in areas adjacent to guide contours that form the locking grooves. 
     
     
         9 . The sliding cam system according to  claim 8 , wherein the flattened sections reach up to a periphery of the actuator pins.