Internal combustion engine with variable cam timing oil filter with restrictor arrangement
AssigneeFord Global Technologies, LLC
InventorRobert Wayne Lunsford
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Abstract
An automotive engine arrangement 7 is provided having a VCT unit 96 wherein a lubrication oil restrictor 152 is incorporated with the VCT unit oil filter 127. The arrangement 7 of the present invention allows for VCT unit oil filter 127 to be installed in a cylinder head 18 of an automotive engine block 10 wherein placement of the VCT unit oil filter 127 in the appropriate location automatically installs the restrictor.
Claims15
A filter for a reciprocating piston internal combustion engine having a pressurized oil lubrication system and a variable cam timing unit, said engine having a first passage with an inlet and an outlet and a second passage intersecting said first passage between said first passage inlet and outlet, said second passage supplying oil to said variable cam timing unit, said filter comprising:
- a polymeric material, generally annular inlet frame for placement in said first passage;
- a filter media having an inlet connected with said inlet frame, said filter media having a portion for Altering oil exposed to said second passage;
- and
- a restrictor connected with said filter media forming an outlet for said filter within said first passage.
An automotive engine arrangement, comprising:
- an engine block with at least a first combustion chamber for slidably mounting a reciprocating piston therein;
- a valve for controlling airflow through an air passage connected with said combustion chamber;
- a camshaft for controlling operation of said valve;
- a variable cam timing unit to phase an operation of said valve with respect to a position of said piston;
- a pressurized oil lubrication system to supply pressurized oil to said variable cam timing unit and to at least one other moving component mounted within said engine block, said lubrication system including a first passage having an inlet and an outlet intersected by a variable cam timing unit second passage between said first passage inlet and outlet;
- and
- a filter for insertion within said first passage, said filter having a polymeric material body with an inlet and an outlet, said filter additionally having a filter media, said filter media being exposed to said second passage to allow oil passing to said second passage to be filtered, and said filter having a restricted outlet to restrict the flow of said lubricating oil through said outlet to supply said moving component.
A method of assembling a reciprocating piston internal combustion engine having a pressurized oil lubrication system and a variable cam timing unit and a first passage with an inlet and an outlet and a second passage intersecting the first passage between said first passage inlet and outlet to supply oil to said variable cam timing unit, said method comprising:
- inserting within said first passage a filter having a polymeric material, generally annular inlet frame and a filter media having an inlet connected with said inlet frame for filtering oil exposed to said second passage and a restrictor connected on said filter media forming an outlet for said filter within said first passage.
Dependencies are inferred from the claim text.