Engine piston and manufacture

An engine piston 10 (Fig 1(a)) is manufactured by assembling an outer shell 12, comprising a crown 16 and tubular side wall 20 in which a ring groove region 40 and skirt are defined, with a plate-like mounting member 14 and bonding them together by brazing or welding. The mounting member is located...

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Bibliographische Detailangaben
Hauptverfasser:	DAVID THORNTON PINDAR, ROGER JAMES JONES, DAVID JAMES THARRATT, DUNCAN PARKER, GILLIAN HUME
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An engine piston 10 (Fig 1(a)) is manufactured by assembling an outer shell 12, comprising a crown 16 and tubular side wall 20 in which a ring groove region 40 and skirt are defined, with a plate-like mounting member 14 and bonding them together by brazing or welding. The mounting member is located within the tubular side wall displaced axially from the crown and is bonded near, but displaced radially from, its centre to the crown and at its periphery to the side wall at the end of the ring groove region. The mounting member carries gudgeon pin boss means 60 facing away from the crown. The outer shell is formed by extrusion or the like that permits minimal wall thickness and the bonded structure is of light weight but great strength and stiffness, particularly in the ring groove region. A combustion bowl 30 formed in the crown facilitates bonding to the mounting member and defines with the mounting member an annular cooling chamber 80 adjacent the ring groove region and crown.