Hydraulic transmission

Details Hydraulic transmission Hydraulic transmission

1987-06-19

1989-03-21

Chambers, A. Michael

Power plants

Pressure fluid source and motor

Having plural energy outputs

60414, 60486, 417223, 192 85A, B60K 900

Patent

active

048132349

ABSTRACT:
A hydraulic transmission, in particular for an automotive drive system including a combustion engine comprises at least a pair of hydrostatic pumps and at least a pair of hydrostatic motors each pump and/or motor having the same size or different size with a constant or adjustable through-put. Automatically actuated clutches are provided to connect the pumps to the engine and to connect the motors to a load. A variety of transmission ranges is obtained by activating selected ones of the individual pumps and motors by actuating corresponding clutches. Therefore, the combustion engine may be operated under conditions in which fuel comsumption is as low as possible.

REFERENCES:
patent: 3092970 (1963-06-01), Sampietro
patent: 3261421 (1966-07-01), Forster et al.
patent: 3421389 (1969-01-01), Fauchere
patent: 3509721 (1970-05-01), Crawford
patent: 4204405 (1980-05-01), Basham
patent: 4215545 (1980-08-01), Morello et al.
patent: 4351409 (1982-09-01), Malik
Olhydraulik u. Pneumatik, 1980, No. 7, p. 525.

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