A Power Summation Control System for Fixed Displacement Pumps

740726

02/01/1974

Event
1974 SAE International Off-Highway and Powerplant Congress and Exposition
Authors Abstract
Content
A new fluid power pump control system has been developed. This dual-sensing control system monitors the power demands of two separate hydraulic circuits and limits these demands over a wide range of combinations of pressures in each circuit. The technique provides a stepwise approximation to the familiar horsepower curve and results in a high degree of engine power utilization when applied to circuits such as the implement circuits of an excavator.
The two-speed nature of the control system of each tandem pump extends beyond the implement circuit and allows manual or automatic two-speed track drive. It also provides reduced flow to the implement circuit for precise tool control even at maximum engine speed.
Meta TagsDetails
DOI
https://doi.org/10.4271/740726
Pages
6
Citation
McBurnett, J., and Combs, B., "A Power Summation Control System for Fixed Displacement Pumps," SAE Technical Paper 740726, 1974, https://doi.org/10.4271/740726.
Additional Details
Publisher
Published
Feb 1, 1974
Product Code
740726
Content Type
Technical Paper
Language
English