Patent ID: 7828683
Filing Date: 2010-11-09
Classification: B60K,F16H

Abstract:
1. A CVT hydromechanical drive comprising: an engine rotating a propeller shaft; a hydrostatic unit, in turn comprising a hydraulic pump and a hydraulic motor connected hydraulically to each other; an epicyclic transmission; a plurality of clutches; and an assembly; a first gear fitted to a planet carrier of the epicyclical transmission meshes with an idler gear on a pinion shaft having a pinion configured for transmitting motion to a differential and a first clutch connects the idler gear to the pinion shaft, wherein a first portion of the first clutch is integral with the idler gear, and a second portion of the first clutch is integral with the pinion shaft; and said hydrostatic unit is substantially U-shaped, and in that a longitudinal axis of symmetry of said pump is substantially in line with a longitudinal axis of symmetry of said propeller shaft, wherein the hydraulic motor is configured to directly drive a ring gear of the epicyclical transmission and accelerate or decelerate the planet carrier of the epicyclical transmission.