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Piston compression rings of copper-beryllium alloys

A piston ring, copper alloy technology, applied in the field of compression rings, can solve problems such as limitations, engine failures, etc.

Inactive Publication Date: 2019-10-18
MATERION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These inefficiencies can negate the advantage of moving the top compression ring closer to the piston crown and, worst case, cause engine failure
[0006] Piston compression ring materials currently in use limit the designer's ability to improve efficiency by moving the position of the top compression ring

Method used

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  • Piston compression rings of copper-beryllium alloys
  • Piston compression rings of copper-beryllium alloys
  • Piston compression rings of copper-beryllium alloys

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Experimental program
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Embodiment Construction

[0026] specific implementation plan

[0027] A more complete understanding of the articles / devices, processes and components disclosed herein can be obtained by reference to the accompanying drawings. These figures are merely schematic representations based on convenience and ease of illustrating the present disclosure, and thus are not intended to indicate relative sizes and dimensions of devices or components thereof and / or to define or limit the scope of the exemplary embodiments.

[0028] Although specific terms are used in the following description for purposes of clarity, these terms are intended to refer only to specific structures of the embodiments selected for illustration in the drawings, and are not intended to define or limit the scope of the present disclosure. In the drawings and the following description, it should be understood that like numerals designate parts of similar function.

[0029] Unqualified and "the / said" modified nouns / pronouns include plural re...

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Abstract

A piston ring is made from a copper-beryllium alloy. This material permits the top compression ring of a piston to be moved closer to the piston crown, reducing crevice volume and reducing the tendency for pre-ignition. Ignition timing advance can be realized by installing the rings and letting the ECU advance the timing as the sensors allow, increasing efficiency. Also, shorter pistons and longerconnecting rods are possible. The shorter pistons reduce the reciprocated mass in the engine and the longer connecting rods reduce the frictional loss caused by radial forces pushing the piston against the liner. Both reducing volume and tendency for pre-ignition increase engine efficiency.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 443,448, filed January 6, 2017, the entire contents of which are incorporated herein by reference in their entirety. Background technique [0003] The present disclosure relates to compression rings made of copper alloys. Compression rings may be used in pistons (eg, in internal combustion engines). The rings can exhibit high thermal conductivity, good wear resistance and thermal stability. [0004] Improving engine efficiency (roughly understood as distance traveled per mile, or miles per gallon) is a goal of many engine manufacturers and automotive OEMs. In car racing, this involves maximizing horsepower. In passenger cars, upcoming EU greenhouse gas emission standards have made engine efficiency a priority for European original equipment manufacturers (OEMs). However, the market desires no compromise in performance, so smaller engines ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/00F02F5/00F16J9/00
CPCB22F5/02C22C9/00C22C9/06F02F5/00F16J9/14F16J9/20F05C2201/0475F16J9/26B23P15/06
Inventor 大卫·J·克鲁斯斯蒂芬·麦克罗伯特·E·库斯纳查德·A·芬克贝涅迈克尔·J·格德翁阿南德·V·萨曼特安德鲁·J·惠特克
Owner MATERION