专利名称：METHOD OF MANUFACTURING A
CRANKSHAFT FROM A HIGH SHRINK METALALLOY
发明人：Dale Edward Murrish,Edward R.
Romblom,Brian J. McClory,Ronald M.Tkac,Donald J. Perella
申请号：US14492714申请日：20140922
公开号：US20160084295A1公开日：20160324
专利附图：
摘要：A crankshaft includes a pin bearing journal, and a counterweight. The pinbearing journal defines a hollow pin core. The hollow pin core includes a first pin coresection and a second pin core section, and an enlarged central section disposed betweenthe first pin core section and the second pin core section. The first and second pin coresections each define a cross section having a first and second cross sectional arearespectively, and the enlarged central section defines a third cross section defining athird cross sectional area, with the third cross sectional area larger than the first andsecond cross sectional areas. An isolation window extends through the counterweight.The crankshaft is cast from a high shrink steel alloy having a shrinkage factor equal to orgreater than 1%. The enlarged central section and the isolation window improve thecastability of the high shrink steel alloy.
申请人：GM GLOBAL TECHNOLOGY OPERATIONS LLC
地址：Detroit MI US
国籍：US
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