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US 8,186,494 B2Granted
Electronically controlled fluid coupling device with fluid scavenge control and enhanced cooling
AssigneeBorg-Warner Corporation
InventorRick L. Boyer
Life of this patent
Estimating the term…
Abstract
A viscous fan drive with a front-mounted fan and electrical actuation without a tethered harness. The mechanical package includes an inverted viscous clutch, a drive pulley, a split electromagnetic actuator with the electrical portion mounted to a stationary mounting member. Enhanced cooling can be provided with breather openings in the pulley, breather slots in the body member, and fins in the reservoir.
Claims16
A fluid coupling device comprising:
- an output member;
- an input member rotating about and engageable with said output member, said input member rotating at an input speed;
- said input member comprising a body member and a cover member coupled to said body member;
- a working chamber disposed between and at least partially defined by said input member and said output member;
- and
- a pulley member attached to said input member;
- said output member engageable with said input member through reception of fluid within said working chamber;
- said pulley member having at least one opening to allow cooling air to pass through and assist in cooling said input member;
- and
- said body member having a plurality of outer fin members and a plurality of breather slots in the outer surface to assist in directing cooling air against said fin members.
7 more elements
A fluid coupling device comprising:
- an output member;
- an input member rotating about and engageable with said output member, said input member rotating at an input speed;
- said input member having a body member and a cover member;
- a working chamber disposed between and at least partially defined by said input member and said output member;
- and
- a pulley member attached to said input member;
- said output member engageable with said input member through reception of fluid within said working chamber;
- said pulley member having at least one opening to allow cooling air to pass through and assist in cooling said input member;
- a rotor member, a reservoir plate member and a moveable valve member;
- said reservoir plate member having an annular fluid aperture which is adapted to be covered, uncovered or partially covered by said moveable valve member;
- and
- said reservoir plate member and said body member defining a fluid reservoir chamber for viscous fluid, and wherein said body member has a plurality of fin members protruding into said fluid reservoir chamber.
9 more elements
A fluid coupling device comprising:
- an output member;
- an input member rotating about and engageable with said output member, said input member rotating at an input speed;
- said input member having a body member and a cover member;
- a working chamber disposed between and at least partially defined by said input member and said output member;
- and
- a pulley member attached to said input member;
- said output member engageable with said input member through reception of fluid within said working chamber;
- said pulley member having at least one opening to allow cooling air to pass through and assist in cooling said input member;
- and
- a rotor member, a reservoir plate member and a moveable valve member;
- said reservoir plate member and said body member defining a fluid reservoir chamber for viscous fluid and wherein said body member has a plurality of fin members protruding into said fluid reservoir chamber.
8 more elements
A fluid coupling device comprising:
- an output member;
- an input member rotating about and engageable with said output member, said input member rotating at an input speed;
- said input member having a body member and a cover member;
- a working chamber disposed between and at least partially defined by said input member and said output member;
- and
- a pulley member attached to said input member;
- said output member engageable with said input member through reception of fluid within said working chamber;
- said pulley member having at least one opening to allow cooling air to pass through and assist in cooling said input member;
- a rotor member, a reservoir plate member and a moveable valve member;
- said reservoir plate member having an annular fluid aperture which is adapted to be covered, uncovered or partially covered by said moveable valve member;
- and
- wherein said body member has a plurality of outer fin members and a plurality of breather slots, said breather slots assisting in directing air toward said fin members.
9 more elements
A fluid coupling device comprising:
- an output member;
- an input member rotating about and engageable with said output member, said input member rotating at an input speed;
- said input member having a body member and a cover member;
- a working chamber disposed between and at least partially defined by said input member and said output member;
- and
- a pulley member attached to said input member;
- said output member engageable with said input member through reception of fluid within said working chamber;
- said pulley member having at least one opening to allow cooling air to pass through and assist in cooling said input member;
- said body member having a plurality of outer fin members and a plurality of breather slots in the outer surface to assist in directing cooling air against said fin members;
- and
- said pulley member having a plurality of raised boss members in order to space said pulley member from said body member.
8 more elements
Dependencies are inferred from the claim text.