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US 2009/0211547 A1Published application
Camshaft phaser for internal combustion engine
AssigneeFord Global Technologies, LLC
InventorColin J. Young
Life of this patent
Estimating the term…
Abstract
A camshaft phaser for an internal combustion engine includes a driven hub attached to a camshaft, and a drive sprocket journaled to the driven hub. A locking device uses a pin receptacle having a locking bore and an engagement ramp which is contiguous with the locking bore to allow a locking pin to extend partially from its housing pin bore before the locking pin is registered with the locking bore.
Claims15
A camshaft phaser for an internal combustion engine, comprising:
- a driven hub attached to a camshaft;
- a drive sprocket journaled to said driven hub, with said drive sprocket being rotatably indexable relative to said driven hub;
- and
- a locking device for selectively indexing the drive sprocket to the driven hub, with said locking device comprising:
- a locking pin housed reciprocably in a pin bore formed in one of said driven hub and said drive sprocket;
- at least one pin receptacle formed in the other of said driven hub and said drive sprocket at a location accessible to said locking pin when said locking pin is extended from the pin bore, with said pin receptacle comprising:
- a locking bore having a section configuration generally matching the section configuration of said locking pin;
- and
- an engagement ramp contiguous with said locking bore for allowing the locking pin to extend partially from said pin bore before the locking pin is registered with the locking bore.
6 more elements
A camshaft phaser for an internal combustion engine, comprising:
- a driven hub attached to a camshaft;
- a drive sprocket driven by a crankshaft, with said drive sprocket being journaled to said driven hub and with said drive sprocket being rotatably indexable relative to said driven hub;
- and
- a locking device for selectively indexing the drive sprocket to the driven hub, with said locking device comprising:
- a locking pin housed reciprocably in a pin bore formed in one of said driven hub and said drive sprocket, with said locking pin being normally locked and movable by a selectively deactivatable hydraulic pressure source to an unlocked position;
- at least one pin receptacle formed in the other of said driven hub and said drive sprocket at a location accessible to said locking pin when said locking pin is extended from the pin bore, with said pin receptacle comprising:
- a locking bore for receiving the locking pin, with said locking bore having a wall with a section configuration generally matching the section configuration of said locking pin;
- and
- a recessed engagement ramp, contiguous with said locking bore, for allowing the locking pin to extend partially from said pin bore after said hydraulic pressure source has been deactivated, but before the locking pin has become registered with the locking bore, whereby said locking pin will impact upon the wall of said locking bore before extending fully into said locking bore.
6 more elements
Dependencies are inferred from the claim text.