Double flapper valve for a variable cam timing system
AssigneeBorgWarner Inc.
InventorsChris D. Thomas, Augusto Fanzani, Maino Bruno
Life of this patent
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Abstract
An inlet check valve for controlling fluid from a supply into a variable cam timing phaser includes a double flapper check valve assembly with an open position and a closed position, which includes a housing having a body, at least one stopper, a flapper valve comprising at least two flexible flaps received within the housing and aligned with the stopper(s), and a valve seat received within the housing, the valve seat defining openings aligned with the at least two flexible flaps, axially opposite the two stoppers.
Claims15
A check valve for controlling fluid within or into a variable cam timing phaser, comprising:
- a double flapper check valve assembly with an open position and a closed position, the double flapper check valve comprising:
- a housing having a body forming at least one stopper;
- a flapper valve comprising at least two flexible flaps received within the housing and aligned with the stopper(s);
- and
- a valve seat received within the housing, the valve seat defining openings aligned with the at least two flexible flaps, axially opposite the stopper(s);
- wherein when fluid flows through the openings of the valve seat, the fluid pushes the at least two flaps away from the valve seat and towards the stopper(s), permitting the flow of fluid into the variably;
- cam timing phaser;
- and
- wherein when fluid flows from the body onto the at least two flaps, the fluid pushes the at least two flaps towards the valve seat, sealing the openings of the valve seat and preventing fluid from entering the supply.
A check valve for controlling fluid within or into a variable cam timing phaser, comprising:
- a double flapper check valve assembly with an open position and a closed position, the double flapper check valve comprising:
- a housing having a body;
- a flapper valve comprising at least two flexible flaps received within the housing;
- a stopper aligned with the at least two flexible flaps;
- and
- a valve seat received within the housing, the valve seat defining openings aligned with the at least two flexible flaps, axially opposite the stopper;
- wherein when fluid flows through the openings of the valve seat, the fluid pushes the at least two flaps away from the valve seat and towards the stopper, permitting the flow of fluid into the variable cam timing phaser;
- and
- wherein when fluid flows from the body onto the at least two flaps, the fluid pushes the at least two flaps towards the valve seat, sealing the openings of the valve seat and preventing fluid from entering the supply.
Dependencies are inferred from the claim text.