Full-time transfer case with synchronized range shift mechanism

Planetary gear transmission systems or components – Variable speed or direction transmission combined with... – Condition responsive

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180249, F16H 4802

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active

057023212

ABSTRACT:
A power transfer system is disclosed for a full-time four-wheel drive vehicle. The power transfer system includes a layshaft gear reduction unit that is operable for establishing high-range and low-range speed ratios, and a synchronized range shift mechanism that is adapted to permit the vehicle operator to shift on-the-fly for establishing full-time high-range and low-range four-wheel drive modes. The power transfer system includes an slip limiting/torque-biasing arrangement including an interaxle differential and a transfer clutch operable for controlling the magnitude of speed differentiation and torque biasing across the interaxle differential.

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