Hydromechanical transmission and control method

Methods and systems for a hydromechanical transmission are provided herein. In one example, the transmission operating method includes asynchronously shifting between a first pair of drive ranges in the transmission via operation of two clutches and a variable displacement hydraulic pump in a hydros...

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Bibliographische Detailangaben
Hauptverfasser: Profumo, Giovanni, Dalla Palma, Lorenzo, Gunsch, Fabio, Gelmini, Mario
Format: Patent
Sprache:eng
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Zusammenfassung:Methods and systems for a hydromechanical transmission are provided herein. In one example, the transmission operating method includes asynchronously shifting between a first pair of drive ranges in the transmission via operation of two clutches and a variable displacement hydraulic pump in a hydrostatic assembly. In the method, asynchronously shifting between the two drive ranges includes a plurality of phases that include a swiveling phase where a speed of the hydrostatic assembly is inverted.