Importance

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Abstract

A hydrostatic/mechanical branch power split transmission for power vehicles is disclosed. The transmission includes an infinitely variable hydrostatic converter having a first hydrostatic unit of adjustable volume and a second hydrostatic unit. The transmission also includes a power distribution system whereby the driving power is split into a hydraulic and a mechanical branch and is summed again before the transmission output. The transmission permits various driving strategies or driving programs which can be conveniently adjusted and accessed. There is also a hydrostatic connection which can be switched at several gear ratio points. The braking capacity of the engine and maximum braking effect through the continuous hydrostatic converter can be utilized and easily controlled. A further variant also enables braking energy to be recuperated with the hydrostatic converter. The continuous converter can be precisely adjusted to optimize gear shift range selection.

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First Claim