Apparatus, systems and methods for indexed hydraulic roller lifters

Abstract

The disclosed apparatus, systems and methods relate to an indexed hydraulic roller lifter for use in internal combustion engines.

What is claimed is: 
     
         1 . A hydraulic roller lifter, comprising:
 a. a lifter body having first and second ends;   b. at least one indexing portion set into the first end; and   b. a wheel disposed at the second end.   
     
     
         2 . The hydraulic roller lifter of  claim 1 , further comprising a roller lifter tube. 
     
     
         3 . The hydraulic roller lifter of  claim 2 , wherein the roller lifter tube defines a lumen. 
     
     
         4 . The hydraulic roller lifter of  claim 3 , wherein the lumen defines at least one index tab. 
     
     
         5 . The hydraulic roller lifter of  claim 4 , wherein the roller lifter tube is press-fit into an engine block. 
     
     
         6 . The hydraulic roller lifter of  claim 5 , wherein the at least one index tab is constructed and arranged to prevent rotational movement of the lifter body. 
     
     
         7 . The hydraulic roller lifter of  claim 5 , wherein the at least one index tab is constructed and arranged to prevent rotational movement of the lifter body at the indexing portion. 
     
     
         8 . The hydraulic roller lifter of  claim 1 , further comprising a sleeve.