| 摘要 |
<p>A crankshaft (100) having a crankpin journal (136), a main journal (108), and a crank web (120), is provided. The crankpin journal (136) and the main journal (108) have a hardened surface (402) up to a first pre-determined depth. The crankshaft (100) includes a crankpin journal fillet (202) joining the crankpin journal (136) and the crank web (120). The crankshaft (100) also includes a main journal fillet (204) joining the main journal (108) and the crank web (120). The crankpin journal fillet (202) and the main journal fillet (204) both include a hardened surface (402) strengthened by a peening process. The crankshaft (100) further includes an oil passage (152) extending through the crankpin journal (136) and the main journal (108). The oil passage (152) extends such that a portion of a surface (402) proximate to the oil passage (152) is hardened to a second pre-determined depth.</p> |
