Design, Development, and Demonstration of a High-Pressure, Overcenter, Variable-Displacement Hydraulic Motor
Date Published: 1990-09-01
Paper Number:901794
DOI: 10.4271/901794
Citation:
Durtschi, W., Kandil, M., and Kilroy, D., "Design, Development, and Demonstration of a High-Pressure, Overcenter, Variable-Displacement Hydraulic Motor," SAE Technical Paper 901794, 1990, doi:10.4271/901794.
Author(s):
William G. Durtschi - Sundstrand
Magdy Kandil - Sundstrand
Donald Kilroy - Sundstrand
Abstract:
This document presents and discusses the design, development, and demonstration of a 3,000 to 8,000 psi (207 to 552 bar) electronically controlled, overcenter, variable-displacement hydraulic motor (VDHM) in which output speed and position control are effected solely through wobbler position control. This approach contrasts with traditional systems that are normally controlled through a large servovalve which throttles flow across the motor control ports. By connecting the variable-displacement hydraulic motor (VDHM) motor directly to supply and return and controlling through wobbler modulation, the need for a large throttling servovalve with its associated flow losses is eliminated. This can result in significant improvement in peak flow consumption, overall efficiency, and package size.
Purchase more technical papers and save! With TechSelect,
you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
Learn more >
