Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Control of differential planetary gearing
Patent
1990-08-28
1992-01-07
Braun, Leslie A.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Control of differential planetary gearing
475 89, 475249, F16H 144
Patent
active
050786610
ABSTRACT:
A differential for use in a car includes a case rotatable around an axis, an input gear fixed to the case, coaxial with the axis of the case, a pair of output shafts which are rotatably supported by the case coaxially with the axis of the case and protrude from opposite ends of the case, a pair of intermeshing first gears disposed in the case at opposite sides of the axis of the case and rotatably supported by the case, a pair of second gears disposed in the case, a pair of third gears disposed in the case coaxially with the axis of the case, and at least one gear pump defined by at least one of the pairs of intermeshing gears. The differential restricts a flow of an operation oil of the gear pump so as to generate a load on the gear pump. One of the second gears is located at one side of and coaxial with one of the first gears and rotates integrally with this first gear. The other of the second gears is located at the other side of and coaxial with the other one of the first gears and rotates integrally with this first gear. One of the third gears rotates integrally with one of the output shafts and meshes with one of the second gears. The other of the third gears rotates integrally with the other of the output shafts and intermeshes with the other of the second gears. The gear pump has two chambers one of which operates as an inlet chamber. The other chamber operates as an outlet chamber in response to the direction of the rotation of the gears. The gear pump and the restricted flow of the operation oil of the gear pump combine a restrict a differential motion of the differential.
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Braun Leslie A.
Mazda Motor Corporation
Stavish Matthew
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