Performance and Analysis of a Dynamic Loading Four Square Machine for Crawler Tractor Power Train Development

Format:

Conference/Event

Author/Creator:

Schmitt, John C., author.

Conference Name:

1982 SAE International Off-Highway and Powerplant Congress and Exposition (1982-09-13 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1982

Summary:

This paper describes a machine that tests crawler tractor power trains through application of the four square principle. Two units coupled to form a "closed torque loop" require only power input sufficient to overcome frictional losses.A computer governs test operation - from monitoring system parameters to control of a gearbox for dynamic torque loop loading.The loads at selected points in the closed loop were found to be dependent upon the directions of machine rotation and torque. It was concluded that frictional losses in the closed loop caused significant differences in load levels at the driving and driven test units

Notes:

Vendor supplied data

Publisher Number:

821028

Access Restriction:

Restricted for use by site license