Hydrostatic transmission system and power limiter control therefor
This patent describes a closed loop hydrostatic transmission system. It comprises: a system reservoir; a variable displacement pump unit adapted to be driven by a source of power, and including fluid pressure responsive means for varying the displacement of the pump unit; a fixed displacement motor unit adapted to transmit drive torque to a reversible load having a known inertia; first and second conduits interconnecting the motor unit and the pump unit; charge pump means adapted to be driven by the source of power, the charge pump means comprising the sole source of make-up fluid to the closed loop hydrostatic transmission system, and the sole source of control fluid for varying the displacement of the pump unit; main control means operable to control the flow of control fluid from the charge pump means to the fluid pressure responsive means, the main control means defining flow restriction means in series flow relationship between the charge pump means and the fluid pressure responsive means; and power limiting control means.
- Assignee:
- Eaton Corp., Cleveland, OH (USA)
- Patent Number(s):
- A; US 4936095
- Application Number:
- PPN: US s 7-264290
- OSTI ID:
- 6553391
- Country of Publication:
- United States
- Language:
- English
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