Lightweight nodular iron crankshaft for heavy duty engine

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United States of America Patent

PATENT NO 12044270
APP PUB NO 20230304529A1
SERIAL NO

17704524

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 MAIL CODE 482-C24-A65 DETROIT MI 48265

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berry, William A Davison, US 5 30
Cao, Guirong Troy, US 2 1
Klemstine, David C Orlon, US 2 1
Wang, Qigui Rochester Hills, US 159 404
Yang, Jianghuai Rochester Hills, US 33 22

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