Journal
LUBRICANTS
Volume 10, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/lubricants10090216
Keywords
off-highway vehicles; hydraulic efficiency; hydraulic losses; fuel savings
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The US Army uses MIL-PRF-2104 SAE 10 hydraulic fluid in its construction and material handling equipment, but it has not been optimized for hydraulic system efficiency. Two energy efficient hydraulic fluids were compared to MIL-PRF-2104 SAE 10, and the study concluded that using higher efficiency fluids can reduce fuel consumption and save costs.
The US Army uses MIL-PRF-2104 SAE 10 hydraulic fluid in its construction and material handling equipment. This oil meets basic performance requirements but has not been optimized for hydraulic system efficiency. Hydraulic system efficiency is important because fuel transportation has unique costs and dangers in military applications. Two energy efficient hydraulic fluids were compared to MIL-PRF-2104 SAE 10 in dynamometer testing. The higher efficiency fluids reduced internal leakage flow losses and decreased low-speed motor friction. Fleet-wide fuel savings estimates for US Army construction and material handling machines were derived from engine fuel consumption models, vehicle mission profiles, hydraulic circuit analysis and dynamometer test results. The savings due to reduced fuel consumption was estimated to be $8,000,000 per annum.
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