Impulse power loss in orthogonal face gear–numerical and experimental results

Splash lubrication for an orthogonal face gear using numerical investigation integrating image processing

“…The splash lubrication tests for an orthogonal face gear by Zhu and Dai 23 were conducted on a specific test rig composed of a high-speed motor, torque transducer, and a gearbox with a 3D-printed face gear. More details are referred to Dai et al 12 and Zhu and Dai 23 The inner space of the transparent Plexiglas gearbox is 394 × 266 × 100 mm 3 . The face gear is located in the center of the gearbox, namely, the distance from the face gear to the front/rear walls of the housing is about 39 mm, and the distance from the face gear to the left/right walls of the housing is about 65 mm, the distance from the face gear to the up/down walls of the housing is about 51 mm.…”

“…The interaction of the rotating gears or bearings with the surrounding fluid medium is usually associated with no-load power losses. For gears, this energy dissipation results from different types of effects including churning, [4][5][6] pumping, [7][8][9] impulse, [10][11][12] and windage. [13][14][15] For splashlubricated gears, the interaction of the gears with a primary fluid (lubricating oil) causes churning and pumping effects, while the interaction with a second fluid (air) results in windage effects.…”