The Encore luxury small crossover arrives early next year as the GM’s first entry into the
burgeoning small crossover segment.
It’s “Active On-Demand” all-wheel drive is designed to give
the vehicle the fluid drive characteristics and sure-footed traction Buick
drivers expect but in a smaller, lighter package. Unlike traditional systems
that engage all four drive wheels after slip is detected, Encore uses a
magnetic charge to engage a clutch at the rear axle preemptively when the vehicle
is at rest because slippage is most likely to occur just as the vehicle begins
to move. If no slip is detected, a computer control automatically disengages
the preemptive torque to the clutch once the Encore is underway, returning the
system to a primarily front-drive operation.
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