Hydromechanical transmissions employing hydrostatic pumps and motors have high inherent efficiency if the ratio of power transmitted hydraulically to that transmitted mechanically is small. Where significant horsepower is to be transmitted over a wide range of torque multiplication, however, simple input-coupled and output-coupled transmissions require large hydraulic units, generate high gear loadings, and have reduced reverse torque at standstill. A transmission which is operated sequentially as output-coupled then input-coupled reduces hydraulic horsepower and gear loading. In a transmission with a pure hydrostatic start, reverse torque can be made equal to forward torque at standstill.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Startup and Regeneration Problems in Hydromechanical Transmissions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    National Farm, Construction and Industrial Machinery Powerplant, Transportation ; 1968



    Publication date :

    1968-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Multirange hydromechanical transmissions

    Kowalski, Stanisław | TIBKAT | 1993


    Hydromechanical automobile transmissions

    Maier, A. | Engineering Index Backfile | 1960


    Design Optimization of Complex Hydromechanical Transmissions

    Pettersson, Karl | Online Contents | 2013


    Characteristics of Multiple Range Hydromechanical Transmissions

    Orshansky, Eli / Weseloh, William E. | SAE Technical Papers | 1972


    Hydromechanical Transmissions as Applied to Mobile Equipment

    Macdonald, John G. | SAE Technical Papers | 1969