PISTON COMPRESSION RINGS OF COPPER-BERYLLIUM ALLOYS

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...

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Bibliographic Details
Main Authors FINKBEINER, Chad A, KUSNER, Robert E, KRUS, David J, WHITAKER, Andrew J, MACK, Steffen, GEDEON, Michael J, SAMANT, Anand V
Format Patent
LanguageEnglish
French
German
Published 13.11.2019
Subjects
ALLOYS
ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
BLASTING
CHEMISTRY
COMBUSTION ENGINES
CYLINDERS
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
ENGINEERING ELEMENTS AND UNITS
FERROUS OR NON-FERROUS ALLOYS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
METALLURGY
PISTONS
SEALINGS
THERMAL INSULATION IN GENERAL
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WEAPONS
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Summary: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 longer connecting rods are possible. The shorter pistons reduces 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.
Bibliography:Application Number: EP20170826086