Hydromechanical transmission
- San Diego, CA
A power transmission having three planetary assemblies, each having its own carrier and its own planet, sun, and ring gears. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the three sun gears, all of which are connected together. The speed-varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being connected in driving relation to the input shaft, the other unit, which may have a fixed stroke, being connected in driving relation to the sun gears. The input shaft also drives the carrier of the third planetary assembly. A brake grounds the first carrier in the first range and in reverse and causes drive to be delivered to the output through the first ring gear in a hydrostatic mode. The carrier of the third planetary assembly drives the ring gear of the second planetary assembly, and a first clutching means connects the second carrier with the output in a second range, the brake for grounding the first carrier then being released. A second clutching means enables the third ring gear to drive the output shaft in a third range.
- Research Organization:
- Orshansky Transmission Corp., San Diego, CA (USA)
- Assignee:
- Orshansky Transmission Corporation (New York, NY)
- Patent Number(s):
- US 4116089
- OSTI ID:
- 863188
- Country of Publication:
- United States
- Language:
- English
Similar Records
Transmission with a first-stage hydrostatic mode and two hydromechanical stages
Transmission with a first-stage hydrostatic mode and two hydromechanical stages
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