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Title: Piston with insulating air gap formed by additive manufacturing

Patent ·
OSTI ID:1986651
; ; ;

The present disclosure provides a piston, comprising: a skirt having an upper body portion; and a crown formed on the upper body portion by an additive manufacturing process, the crown including at least one air gap formed and positioned to reduce heat transfer from combustion to at least one cooling gallery formed in the piston.

Research Organization:
Cummins Inc., Columbus, IN (United States); Scania CV AB, Södertälje (Sweden)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0007281
Assignee:
Cummins Inc. (Columbus, IN); Scania CV AB (Södertälje, SE)
Patent Number(s):
11,459,977
Application Number:
17/405,504
OSTI ID:
1986651
Resource Relation:
Patent File Date: 08/18/2021
Country of Publication:
United States
Language:
English

References (10)

Method for producing an oxidation protection layer for a piston for use in internal combustion engines and piston having an oxidation protection layer patent-application May 2016
Engine piston having an insulating air gap patent February 2010
One-piece piston featuring additive machining produced combustion bowl rim and cooling gallery patent September 2017
Piston made using additive manufacturing techniques patent-application October 2014
Piston with Insulating Air Gap Formed by Additive Manufacturing patent-application October 2020
Piston assembly and method of making a piston patent September 2015
Mass Efficient Piston patent-application December 2017
Piston with thermally insulated crown patent June 2017
Robust, lightweight, low compression height piston and method of construction thereof patent-application September 2016
Engine piston having an insulating air gap patent-application February 2008

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