Study on Oil Supply Characteristics of Connecting Rod Small End Bearing With Splash Lubrication by Smooth Particle Hydrodynamics Method

Abstract

The lubricating oil distribution significantly impacts the lubrication and cooling of the connecting rod small end bearing during the splash lubrication. This study investigates the oil supply for the small end bearing with splash lubrication utilizing the Smoothed Particle Hydrodynamics. The oil distribution and inlet volume are analysed under various engine speeds. The results reveal that the oil moves close to the piston surface and hardly enters the oil bores, resulting in oil wastage. The oil entering the bores might be thrown out due to the inertia, causing the oil inlet volume to fluctuate. With increasing engine speeds, the total oil inlet volume under the quasi-steady state gradually diminishes, exacerbating the lubrication conditions.

Semi-Solid Forging Process of Aluminum Alloy Connecting Rods for the Hydrogen Internal Combustion Engine

“…As one of the important force transmission parts for the internal combustion engine, the connecting rod is often machined and manufactured with steel, cast iron, iron-based powder, and other materials [14][15][16][17]. With the increasing demand for lightweight automotive components in the market, high-strength aluminum alloy materials have attracted extensive attention from many scholars and businessmen in the connecting-rod-manufacturing field [18][19][20]. As a representative of high-strength aluminum alloy, the 7075 aluminum alloy has numerous merits, such as low density, lightweight, and high strength.…”