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New biodegradable universal tractor transmission oil based on vegetable oil
Kržan, Boris ; Vižintin, Jože
Universal Tractor Transmission Oil (UTTO) is a multi-functional tractor oil formulated for use in transmissions, axles, and hydraulic systems of tractors employing a common oil reservoir. In the ...present work the development of biodegradable vegetable based UTTO oil has been described. The properties of two rapeseed and two high oleic sunflower based oils were investigated in the standard test procedures and compared with the commercially available mineral UTTO oils and fast biodegradable synthetic esters. At first stage, the physical and chemical properties of test oils were determined. Tribological performances of the fluids were demonstrated by using SRV high frequency test device, Four Ball test rig and FZG spur gear test. To simulate real working parameters in a farm tractor, a model hydraulic system and a helical gear test rig were used for investigations.
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