公开(公告)号：US11554413B2

公开(公告)日：2023-01-17

申请号：US17163926

申请日：2021-02-01

Applicant: GM Global Technology Operations LLC

Inventor： Ronald J. Petrus ,  Qigui Wang ,  Richard M. Nichols, III ,  Brian C. Leuenhagen

IPC: B22D15/02 ,  B22D15/04 ,  B22C9/10 ,  F02F1/00

Abstract: A system for making a hybrid cam bore sand core with metal chills for an engine block includes an engine block cast of an aluminum material. A camshaft bore extends through the engine block. A cam bore sand core with at least one metal chill is positioned within the camshaft bore. A body portion of the at least one metal chill is positioned in direct contact with a cam bearing surface of at least one cam bearing member during casting of the engine block to increase a cooling rate of the at least one cam bearing member and create a crystalline material depth of the cam bearing member having enhanced mechanical properties.

公开(公告)号：US20220241851A1

公开(公告)日：2022-08-04

申请号：US17163926

申请日：2021-02-01

Applicant: GM Global Technology Operations LLC

Inventor： Ronald J. Petrus ,  Qigui Wang ,  Richard M. Nichols, III ,  Brian C. Leuenhagen

IPC: B22D15/04 ,  F02F1/00 ,  B22C9/10

Abstract: A system for making a hybrid cam bore sand core with metal chills for an engine block includes an engine block cast of an aluminum material. A camshaft bore extends through the engine block. A cam bore sand core with at least one metal chill is positioned within the camshaft bore. A body portion of the at least one metal chill is positioned in direct contact with a cam bearing surface of at least one cam bearing member during casting of the engine block to increase a cooling rate of the at least one cam bearing member and create a crystalline material depth of the cam bearing member having enhanced mechanical properties.

公开(公告)号：US11655776B1

公开(公告)日：2023-05-23

申请号：US17704535

申请日：2022-03-25

Applicant: GM Global Technology Operations LLC

Inventor： Ronald John Petrus ,  Richard M. Nichols, III ,  Brian C. Leuenhagen ,  William A. Berry ,  Qigui Wang ,  James T. Singer

IPC: F02F1/16 ,  B22C9/10

CPC classification number: F02F1/16 ,  B22C9/10 ,  F02F2200/06

Abstract: An automobile vehicle engine includes multiple water jackets individually formed in a cast engine block proximate to successive ones of multiple cylinder bores. Multiple cast-in place transition regions are individually formed during a casting operation of the cast engine block at entrances to individual ones of the multiple water jackets. Individual ones of multiple sawcuts open into individual ones of the multiple cast-in place transition regions.