Establishment laws of power transmission on branches of double-mechanical transmission

Project authors. National Mining University, Department of Transportation Management, Dnepropetrovsk (Ukraine)

Objective is to determine relationship of circular transmission number of closed loop with the character of power transmission change in hydrostatic mechanical transmissions as well as laws in the character of changes within both circulatory and noncirculatory modes over the range of service conditions for hydrostatic mechanical transmissions.

Project background. Results are the relationships of character of changes in circulating power of double-split steplessly variable with the loss in hydrostatic mechanical transmissions and their efficiency, laws concerning the character of circulatory and noncirculatory modes changes over the range of service conditions for hydrostatic mechanical transmissions. In future it will help to determine relationships of circular transmission loop of double-split hydrostatic mechanical transmissions with the control parameter of hydrostatic transmissions in the context of planetary gear in output and input.

Novelty is in analysis of distributing powers circulating in double-split steplessly variable with loss in hydrostatic transmissions and their efficiency, determining relationships in distributing power on brunches of� double-split hydrostatic mechanical transmissions in the process of their performance as transport means, and strict demonstration of lemma concerning availability or absence of circulating power within double-split hydrostatic mechanical transmissions that is the basis of scientific substantiation of the methodology of steplessly variable double-split hydrostatic mechanical transmissions under any working mode both for traction and transport velocity ranges of any transport means including mine diesel locomotives.

Practical value is using laws of formation and transfer of power paths within transmission components to substantiate the type of transmission required for necessary moving force and stepless cruise control of diesel locomotives within the given range when diesel engine has constant frequency of crankshaft rotation for minimum discharges and fuel consumption. Distribution of paths limits greatly both structure and kinematic scheme of double-split stepless transmission. For any nonreversible variator it should give only parallel power paths from the engine up to driving wheels of traction and transport machine.� � �