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Title: Friction reduction for engine components

Abstract

The present invention relates to techniques for lowering friction between moving surfaces of, for example, an internal combustion engine. Friction reduction is achieved by adding texture modifications to surfaces that come in contact with each other. Texture modifications that reduce friction in accordance with the present invention include dimples of varying geometries and depths ion the surfaces of components. The present invention also relates to the fabrication technique for applying the textures to the surfaces. In another embodiment, the patterned soft mask is applied onto a large surface (flat or curved including cylindrical rollers surfaces) to be followed by electrochemical etching to imprint the textures onto the component. And, in another embodiment, a diamond-like-carbon (DLC) film may be applied to the turbine component to also reduce friction.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1568138
Patent Number(s):
10245806
Application Number:
14/000,857
Assignee:
The George Washington University (Washington, DC)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05C - INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DOE Contract Number:  
AC26-04NT41817
Resource Type:
Patent
Resource Relation:
Patent File Date: 02/21/2012
Country of Publication:
United States
Language:
English

Citation Formats

Hsu, Stephen M., Jing, Yang, Mo, Yufei, Hua, Dongyun, and Chen, Ming. Friction reduction for engine components. United States: N. p., 2019. Web.
Hsu, Stephen M., Jing, Yang, Mo, Yufei, Hua, Dongyun, & Chen, Ming. Friction reduction for engine components. United States.
Hsu, Stephen M., Jing, Yang, Mo, Yufei, Hua, Dongyun, and Chen, Ming. Tue . "Friction reduction for engine components". United States. https://www.osti.gov/servlets/purl/1568138.
@article{osti_1568138,
title = {Friction reduction for engine components},
author = {Hsu, Stephen M. and Jing, Yang and Mo, Yufei and Hua, Dongyun and Chen, Ming},
abstractNote = {The present invention relates to techniques for lowering friction between moving surfaces of, for example, an internal combustion engine. Friction reduction is achieved by adding texture modifications to surfaces that come in contact with each other. Texture modifications that reduce friction in accordance with the present invention include dimples of varying geometries and depths ion the surfaces of components. The present invention also relates to the fabrication technique for applying the textures to the surfaces. In another embodiment, the patterned soft mask is applied onto a large surface (flat or curved including cylindrical rollers surfaces) to be followed by electrochemical etching to imprint the textures onto the component. And, in another embodiment, a diamond-like-carbon (DLC) film may be applied to the turbine component to also reduce friction.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {4}
}

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Works referenced in this record:

Internal combustion engine with localized lubrication control of combustion cylinders
patent, September 2006


Piston apparatus and methods
patent, January 2001


Vane-type rotary compressor with rotary sleeve
patent, March 1987


Method of coating a silicon or silicide substrate
patent, August 2001