Infinitely variable hydrostatic mechanical power shift gear with

Details Infinitely variable hydrostatic mechanical power shift gear with Infinitely variable hydrostatic mechanical power shift gear with

1989-09-28

1991-04-30

Diehl, Dwight

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid pump and motor in one of plural paths to or from...

475 6, 475 78, F16H 4704

Patent

active

050114638

ABSTRACT:
The gear consists of a four-shaft epicyclic gear, of which one shaft forms the input shaft which is in connection via an infinitely variable hydrostatic gear with the second shaft and of which the two remaining shafts represent connecting shafts which, in an extreme position of the hydrostatic gear, have the same speeds and behave during adjustment of the hydrostatic gear into the other extreme position in such a way that one becomes constantly slower and the other constantly faster, and which alternately act on the output shaft via gears of a gear group with following group shiftings. What is special is that the group shiftings make possible a multiple utilization of the gears of the gear group and that preparatory shifts for changing the group shifting provide the synchronization of idling gear parts, and that each gear change itself takes place at synchronous speeds, free from load and without tractive force interruption. Such gears require only small hydrostatic gears, have a particularly large transmission control range and favorable efficiencies. Its use in motor vehicles results in fuel savings and a superior acceleration behavior.

REFERENCES:
patent: 3455183 (1969-07-01), Orshansky, Jr.
patent: 3580107 (1971-05-01), Orshansky, Jr.
patent: 3796111 (1974-03-01), Schauer
patent: 4259881 (1981-07-01), Meyerle
patent: 4354400 (1982-10-01), Baker

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