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公开(公告)号：US12044270B2
公开(公告)日：2024-07-23
申请号：US17704524
申请日：2022-03-25
CPC分类号： F16C3/08 , B22D19/0072 , F16C3/14 , B23P2700/07 , F16C2202/06 , F16C2204/60 , F16C2220/02
摘要： An automobile vehicle crankshaft including a crankshaft casting of a nodular iron. The crankshaft casting includes multiple main journals coaxially aligned on a common crankshaft casting axis. Multiple crankpin journals are fixedly connected to the main journals by individual webs. Multiple lightening holes have individual ones of the multiple lightening holes integrally formed within individual ones of the crankpin journals during casting. A bubble space is located proximate to a mid-portion of selected ones of the multiple lightening holes of the crankpin journals. The bubble space locally increases a passage size of the selected ones of the multiple lightening holes and reduces a mass of the individual ones of the crankpin journals.
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公开(公告)号：US20230304529A1
公开(公告)日：2023-09-28
申请号：US17704524
申请日：2022-03-25
CPC分类号： F16C9/02 , F16C3/14 , F16C3/08 , B22D19/0072 , F16C2202/06 , F16C2204/60 , F16C2202/08 , F16C2220/02 , F16C2360/22
摘要： An automobile vehicle crankshaft including a crankshaft casting of a nodular iron. The crankshaft casting includes multiple main journals coaxially aligned on a common crankshaft casting axis. Multiple crankpin journals are fixedly connected to the main journals by individual webs. Multiple lightening holes have individual ones of the multiple lightening holes integrally formed within individual ones of the crankpin journals during casting. A bubble space is located proximate to a mid-portion of selected ones of the multiple lightening holes of the crankpin journals. The bubble space locally increases a passage size of the selected ones of the multiple lightening holes and reduces a mass of the individual ones of the crankpin journals.
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公开(公告)号：US11619255B1
公开(公告)日：2023-04-04
申请号：US17698410
申请日：2022-03-18
发明人： David C. Klemstine , Guirong Cao , Jianghuai Yang , William A. Berry , Qigui Wang , Anil K. Sachdev , Steven L. Burkholder
摘要： A crankshaft for an internal combustion engine is provided. The crankshaft comprises at least four main journals aligned on a crankshaft axis of rotation defining a centerline. The crankshaft further comprises at least three pin journals. Each pin journal is disposed about a respective pin journal axis and positioned between the main journals. Each of the pin journals is joined to a pair of crank arms. Each pair of crank arms is joined to a respective main journal. Each of the main journals, pin journals, and crank arms is made of a first metallic material. Each crank arm has an over-molded counterweight metallurgically bonded thereto. Each counterweight is disposed opposite a respective pin journal relative to the centerline for balance and stability. Each counterweight is made of a second metallic material. The crankshaft has a weight ratio of the second metallic material to the first metallic material of between 0.20 to 0.50.
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