MONOBLOC PISTON

A monobloc piston has at least two steel parts welded together to define an inner cooling gallery. An outer ring belt is spaced from an inner annular support wall and is joined by a combustion bowl and a lower wall. A pair of pin bosses have axially aligned pin bores. A skirt is formed as one immova...

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Bibliographische Detailangaben
Hauptverfasser:	GAISER, RANDALL, ZHU, XILUO, NIGRO, ROBERTO, BUENO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL CRANKCASE VENTILATING CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENTTYPE, e.g. STEAM ENGINES MECHANICAL ENGINEERING PISTONS SEALINGS STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A monobloc piston has at least two steel parts welded together to define an inner cooling gallery. An outer ring belt is spaced from an inner annular support wall and is joined by a combustion bowl and a lower wall. A pair of pin bosses have axially aligned pin bores. A skirt is formed as one immovable piece with the pin bores. The piston has the following dimensional relationships:ISMD=42-55% of BD, where ISMD is a mean diameter on the inner support wall and BD is an outer diameter of the ring belt wall,ISW=3-8% of BD, where ISW is a sectional width of the inner support wall,CH>53% of BD where CH is a compression height measured between the pin bore axis and the upper surface,TLH>4% of BD, where TLH is a top land height measured between the top of the upper ring groove and the upper surface,SL=30-80% of BD, where SL is a length of the skirt measured between the upper and lower ends of the skirt,SW=2.5-6.5% of BD, where SW is a thickness of the skirt, andGV=150-250% of BD and 5-20% of BD xCH, where GV is a volume of the oil gallery.