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US 2016/0169235 A1Published application
Viscous fan drive systems with fan drive slip feedback
AssigneeBorgWarner Inc.
InventorJames E. IGNATOVICH
Life of this patent
Estimating the term…
Abstract
A viscous fan drive which includes a moveable component in the scavenge or fill passageway that moves relative to pressure that is proportional to slip speed. The force which moves the component into and out of the passageway is directly proportional to the slip speed of the fan drive. This balances the fill and scavenge flow.
Claims11
A viscous fluid coupling assembly for a fan member comprising:
- an output member including a center shaft and configured for attachment to a fan member;
- an input member bearing mounted to said output member and rotatable relative to said output member and at input speed;
- a viscous fluid supply mechanism positioned within said input member and comprising a rotor member, a reservoir plate member having a fluid aperture, a fluid reservoir, a scavenge passage, a wiper, a working chamber and a quantity of viscous fluid;
- a valve mechanism for controlling viscous fluid engagement of said output member with said input member, said valve mechanism having a moveable member for opening, partially opening and covering said fluid aperture;
- and
- a moveable member positioned in operative association with said scavenge passage;
- said moveable member being moveable into and out of said scavenge passage and being able to alter the flow of viscous fluid in said scavenge passage;
- said moveable member being moveable relative to pressure that is proportional to slip speed.
5 more elements
A viscous fluid coupling assembly for a fan member comprising:
- an output member including a center shaft and configured for attachment to a fan member;
- an input member bearing mounted to said output member and rotatable relative to said output member and at input speed;
- a viscous fluid supply mechanism positioned within said input member and comprising a rotor member, a reservoir plate member having a fluid aperature, a fluid reservoir, a scavenge passage, a fill passage, a wiper, a working chamber and a quantity of viscous fluid;
- a valve mechanism for controlling viscous fluid engagement of said output member with said input member, said valve mechanism having a moveable member for opening, partially opening and covering said fluid aperature;
- and
- a moveable member positioned in operative association with said fill passage;
- said moveable member being moveable into and out of said fill passage and being able to alter the flow of viscous fluid in said fill passage;
- said moveable member being moveable relative to pressure that is proportional to slip speed.
5 more elements
Dependencies are inferred from the claim text.