Bench Wear Testing of Common Gasoline Engine Cylinder Bore Surface/Piston Ring Combinations

Hill, Stephen H.; Hartfield-Wünsch, Susan E.; Tung, Simon C.

doi:10.1080/10402009608983614

Cited by 15 publications

(2 citation statements)

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“…Tribometer Tests.Most experiments that are concerned with the wear rates and friction of piston ringcylinder liner systems have been conducted on reciprocating tribometers. Hill, Hartfield-Wunsch and Tung[15] tested three common cylinder bore materials (cast iron, Nikasil and 390 Al) against three piston ring materials (chromium plated cast iron, molybdenum coated cast iron and gas nitrided stainless steel) using a modified Cameron Plint (C-P) tribometer and an Electro-Mechanical LS9 tribometer. The C-P tribometer was operated with a load of 80N, 10mm stroke at 10Hz for 40 hours at 120ºC while the LS9 tribometer was operated with a load of 72N, 25mm stroke at 8.5Hz for 30 hours at 165ºC.…”

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confidence: 99%

The Selection and Testing of Compression Seal and Chamber Coating Materials for the Pivotal™ Engine

Miller

Kral

2005

World Tribology Congress III, Volume 1

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The Pivotal™ Engine was conceived by Pivotal Engineering LTD to overcome some of the inherent problems associated with a conventional two-cycle engine, such as high wear rates and friction losses due to piston tilt and large port openings, reliability problems due to lack of control over piston temperatures and high oil consumption. The Pivotal engine is an Otto cycle two-stroke engine. The engine is assembled from 500cc modules utilizing a rectangular piston that pivots on a plain bearing at one end. The pivoting motion of the piston allows coolant to enter the piston through the centre of the pivot giving temperature control of the combustion chamber while restraining the piston so it has little or no contact with the chamber walls. Although friction loss, temperature control and oil consumption problems have thus been mitigated, prototype engines still experienced problems with high compression seal wear rates. Compression seals run in a reciprocating motion along a flat chamber wall, somewhat analogous to piston rings in a conventional engine, although velocity varies along the seal length. The goal of this research is therefore to select and test compression seals materials to obtain an adequate working life in the Pivotal engine. Based on the rotational tribometer results, the most promising chamber coating so far is plasma sprayed iron with molybdenum and the most promising seal material is reaction bonded silicon nitride.

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The Selection and Testing of Compression Seal and Chamber Coating Materials for the Pivotal™ Engine

Miller

Kral

2005

World Tribology Congress III, Volume 1

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“…Dependendo do autor, o desgaste verificado em anéis de pistão é descrito como "adesivo" (PINT & SCHOCK, 2000), "adesão durante o amaciamento seguido de abrasão e corrosão durante o uso" (BARBER & LUDEMA, 1987), "micropolimento" (HILL et al, 1996); termos como "desgaste por deslizamento" e "desgaste oxidativo" são também comuns na literatura. Isso de certa forma reflete a controvérsia existente sobre os reais fundamentos físicos do desgaste.…”

Section: 1-mecanismos De Desgasteunclassified

Modelamento do desgaste por deslizamento em anéis de pistão de motores de combustão interna.

Tomanik¹

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Automotive tribology overview of current advances and challenges for the future

Tung

McMillan

2004

Tribology International

555

248

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Bench Wear Testing of Common Gasoline Engine Cylinder Bore Surface/Piston Ring Combinations

Cited by 15 publications

References 3 publications

The Selection and Testing of Compression Seal and Chamber Coating Materials for the Pivotal™ Engine

The Selection and Testing of Compression Seal and Chamber Coating Materials for the Pivotal™ Engine

Modelamento do desgaste por deslizamento em anéis de pistão de motores de combustão interna.

Automotive tribology overview of current advances and challenges for the future

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