Laser hardened pattern array in cylinder bores

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12241431
SERIAL NO

18586986

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An engine block for a vehicle includes a bore surface defining a cylinder bore. The bore surface exhibits a first microstructure and includes a pattern of a plurality of cycloidal features formed in the bore surface. The plurality of cycloidal features each exhibit a first length in a first axis and a second length in a second axis arranged 90 degrees from the first axis. The plurality of cycloidal features also exhibit a ratio of the first length to the second length in a range of 1:1.5 to 1.5:1. The plurality of cycloidal features further exhibit a second microstructure including tempered martensite, wherein the second microstructure is different from the first microstructure. The engine block is included in a vehicle. The cycloidal features are formed with a laser.

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Patent Owner(s)

  • GM GLOBAL TECHNOLOGY OPERATIONS LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alksninis, Angela Zsidi Oxford, US 1 0
Chang, Cherng-chi Troy, US 6 34
Hess, Devin R Clarkston, US 16 24
Kunduru, Purushotham Macomb, US 1 0
Liu, Yi Troy, US 838 10296
Metcalf, Richard L Okemos, US 3 6
Wang, Qigui Rochester Hills, US 159 404

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