Integrated pcv oil separator and oil fill tube

Abstract

An engine assembly includes an engine structure including an engine block defining a combustion chamber and a crankcase, and a cylinder head mounted to the engine block. An oil fill tube is connected to the engine structure. A separator assembly includes a separator chamber having a positive crankcase ventilation tube inlet connected to a positive crankcase ventilation passage and having a positive crankcase ventilation tube outlet. The separator chamber includes an internal baffle and a check valve in a bottom of the separator chamber in communication with a drain chamber, the drain chamber being in communication with the oil fill tube.

1 . An engine assembly comprising:
 an engine structure including an engine block defining a combustion chamber and a crankcase, and a cylinder head mounted to the engine block;   an oil fill tube connected to the engine structure, the oil fill tube having an open end that is covered with a removable cap, the removable cap being removed from the oil fill tube to allow oil to be introduced into the engine;   a separator assembly having a separator chamber and a drain chamber, the separator chamber having a positive crankcase ventilation tube inlet connected to a positive crankcase ventilation passage and having a positive crankcase ventilation tube outlet, the separator chamber having an internal baffle and separator chamber in communication with the drain chamber, the drain chamber being in direct communication with the oil fill tube.   
     
     
         2 . The engine assembly according to  claim 1 , further comprising a check valve in a bottom of the separator chamber and in communication with the drain chamber. 
     
     
         3 . An oil fill tube and positive crankcase ventilation oil separator assembly, comprising:
 an oil fill tube adapted to be connected to an engine structure, the oil fill tube having an open end that is covered with a removable cap, the removable cap being removed from the oil fill tube to allow oil to be introduced into the engine;   a separator assembly having a separator chamber and a drain chamber, the separator chamber having a positive crankcase ventilation tube inlet adapted to be connected to a positive crankcase ventilation passage and having a positive crankcase ventilation tube outlet, the separator chamber having an internal baffle and separator chamber in communication with the drain chamber, the drain chamber being in direct communication with the oil fill tube.   
     
     
         4 . The oil fill tube and positive crankcase ventilation oil separator assembly according to  claim 3 , further comprising a check valve in a bottom of the separator chamber and in communication with the drain chamber. 
     
     
         5 . The engine assembly according to  claim 1 , wherein the separator assembly is mounted to a side of the oil fill tube. 
     
     
         6 . The oil fill tube and positive crankcase ventilation oil separator assembly according to  claim 3 , wherein the separator assembly is mounted to a side of the oil fill tube.