Damped valve controller
First Claim
1. A damping assembly for an engine valve, the engine valve being an intake/exhaust valve, the engine valve admitting/exhausting a fluid mixture into/from a combustion chamber of an internal combustion engine, comprising:
- damping apparatus having a damping chamber being selectively in fluid communication with a source of pressurized actuating fluid and being in fluid communication with an actuating fluid vent and being operably coupled to the engine valve, the chamber being floodable with a volume of actuating fluid, venting of actuating fluid from the chamber being selectively restricted, the restriction imparting a force transmittable to the engine valve and acting to moderate engine valve landing speed during a closing stroke of the engine valve.
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Accused Products
Abstract
A damping assembly for an engine valve, the engine valve being an intake/exhaust valve, the engine valve admitting/exhausting a fluid mixture into/from a combustion chamber of an internal combustion engine includes damping apparatus having a damping chamber being selectively in fluid communication with a source of pressurized actuating fluid and being in fluid communication with a substantially ambient actuating fluid reservoir and being operably coupled to the engine valve. The chamber is floodable with a volume of actuating fluid, venting of actuating fluid from the chamber being selectively restricted. The restriction imparts a force to the engine valve acting to moderate engine valve landing speed during a closing stroke of the engine valve. A method of control is further included.
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Citations
70 Claims
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1. A damping assembly for an engine valve, the engine valve being an intake/exhaust valve, the engine valve admitting/exhausting a fluid mixture into/from a combustion chamber of an internal combustion engine, comprising:
damping apparatus having a damping chamber being selectively in fluid communication with a source of pressurized actuating fluid and being in fluid communication with an actuating fluid vent and being operably coupled to the engine valve, the chamber being floodable with a volume of actuating fluid, venting of actuating fluid from the chamber being selectively restricted, the restriction imparting a force transmittable to the engine valve and acting to moderate engine valve landing speed during a closing stroke of the engine valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A damping assembly for an engine valve, the engine valve being an intake/exhaust valve, the engine valve admitting/exhausting a fluid mixture into/from a combustion chamber of an internal combustion engine, comprising:
damping apparatus having a damping chamber being selectively in fluid communication with a source of pressurized actuating fluid and being in fluid communication with an actuating fluid vent and being operably coupled to the engine valve, the chamber being floodable with a volume of actuating fluid, venting of actuating fluid from the chamber being selectively restricted, the restriction imparting a force transmittable to the engine valve and acting to moderate engine valve landing speed during a opening stroke of the engine valve. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A damping assembly for an engine valve, the engine valve being an intake/exhaust valve, the engine valve admitting/exhausting a fluid mixture into/from a combustion chamber of an internal combustion engine, comprising:
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return damping apparatus having a first damping chamber being selectively in fluid communication with a source of pressurized actuating fluid and being in fluid communication with a substantially ambient actuating fluid vent and being operably coupled to the engine valve, the chamber being floodable with a volume of actuating fluid, venting of actuating fluid from the chamber being selectively restricted, the restriction imparting a force transmittable to the engine valve and acting to moderate engine valve landing speed during a closing stroke of the engine valve; and
opening damping apparatus having a second damping chamber being selectively in fluid communication with a source of pressurized actuating fluid and being in fluid communication with a substantially ambient actuating fluid vent and being operably coupled to the engine valve, the second chamber being floodable with a volume of actuating fluid, venting of actuating fluid from the second chamber being selectively restricted, the restriction imparting a force transmittable to the engine valve and acting to moderate engine valve landing speed during a opening stroke of the engine valve. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A method of control for a valve, comprising:
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fluidly coupling a selectively actuatable controller with a source of pressurized actuating fluid and with a substantially ambient actuating fluid reservoir; and
controlling closing landing speed of the valve by;
a. operably coupling a chamber to the valve;
b. selectively independently porting actuating fluid to the chamber; and
c. selectively restricting actuating venting actuating fluid from the chamber, the restricting imparting a force to the valve acting to moderate valve closing landing speed. - View Dependent Claims (49, 50, 51, 52, 53)
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54. A method of control for a valve, comprising;
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fluidly coupling a selectively actuatable controller with a source of pressurized actuating fluid and with a substantially ambient actuating fluid reservoir; and
controlling closing landing speed of the valve by;
a. operably coupling a chamber to the valve;
b. selectively independently porting actuating fluid to the chamber; and
c. selectively restricting actuating venting actuating fluid from the chamber, the restricting imparting a force to the valve acting to moderate valve opening landing speed. - View Dependent Claims (55, 56, 57, 58, 59)
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60. A method of control for a valve, comprising:
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fluidly coupling a selectively actuatable controller with a source of pressurized actuating fluid and with a substantially ambient actuating fluid reservoir;
controlling closing landing speed of the valve by;
a. operably coupling a chamber to the valve;
b. selectively independently porting actuating fluid to the chamber; and
c. selectively restricting actuating venting actuating fluid from the chamber, the restricting imparting a force to the valve acting to moderate valve closing landing speed; and
controlling opening landing speed of the valve by;
a. operably coupling a second chamber to the valve;
b. selectively independently porting actuating fluid to the second chamber; and
c. selectively restricting actuating venting actuating fluid from the second chamber, the restricting imparting a force to the valve acting to moderate valve opening landing speed. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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Specification