Hydrostatic transmission
AssigneeBitelli SPA
InventorRiccardo Mares
Life of this patent
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Abstract
According to the present invention, an improved hydraulic transmission system is provided which includes a fluid supply adapted to supply a variable pressure hydraulic working fluid. Hydraulic users are connected to the fluid supply. A control is adapted to generate a control signal indicative of a desired flow rate of the hydraulic working fluid, and a second connection control is responsive to the control signal and is adapted to selectively connect the hydraulic users in series or in parallel according to the control signal.
Claims34
Hydraulic transmission system comprising:
- a supply means adapted to supply hydraulic working fluid at variable pressure to at least two working lines;
- at least two hydraulic users connected to said supply means via said at least two working lines in a closed circuit configuration;
- a control adapted to generate a control signal indicative of a desired flow rate of the hydraulic working fluid supplied by said supply means;
- and
- a second connection control responsive to said control signal and adapted to control the connection of working line portions connected to the at least two users so as to selectively provide serial and parallel connection of the at least two hydraulic users in response to said control signal.
A method of controlling a hydraulic transmission system, said transmission system having a supply means adapted to supply hydraulic working fluid at variable flow rate to at least two working lines, and at least two hydraulic users connected to said supply means via said at least two working lines in a closed circuit configuration;
- said method comprising the steps of:
- providing a control signal indicative of a desired flow rate of the hydraulic working fluid supplied by said supply means;
- controlling the connection of working line portions connected to the at least two users so as to selectively provide serial and parallel connection of the at least two hydraulic users in response to said control signal.
Dependencies are inferred from the claim text.