Dynamometer Testing of Energy Efficient Hydraulic Fluids and Fuel Savings Analysis for US Army Construction and Material Handling Equipment
Abstract
The US Army uses MIL-PRF-2104 SAE 10 in the hydraulic systems of construction and material handling equipment. This oil meets US military performance requirements for engine and transmission lubricants but has not been optimized for efficiency in hydraulic systems. Efficiency is important because fuel transportation has unique costs and dangers in military applications. To evaluate the potential fuel savings of energy efficient hydraulic fluids, SAE 10 and two commercial off the shelf hydraulic fluids were evaluated in a combined hydraulic pump and motor dynamometer. Axial, variable-axial, and radial piston hydraulic motors were tested under a wide range of temperatures, pressures, and speeds. System flow losses due to internal leakage and motor torque losses due to friction were measured. The input and output power of the system was quantified and the potential fleet-wide fuel savings from energy efficient hydraulic fluids was estimated for 11 vehicle platforms. A direct and fully burdened fuel cost analysis is presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 29, 2022
- Accession Number
- AD1169767
Entities
People
- Eric R. Sattler
- Jill M. Bramer
- Paul Michael