PISTON

PURPOSE:To thermally insulate a piston-head surface and provide improvement in engine efficiency, etc. by casting a piston to be installed in a cylinder of an internal-combustion engine, with a material of the iron group while chilling its head side and making it into a cementite structure. CONSTITU...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	SHIMURA TAKAHISA, HASHIMOTO TADASHI, KANOU SHIYUUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES 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 LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS THERMAL INSULATION IN GENERAL WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To thermally insulate a piston-head surface and provide improvement in engine efficiency, etc. by casting a piston to be installed in a cylinder of an internal-combustion engine, with a material of the iron group while chilling its head side and making it into a cementite structure. CONSTITUTION:A piston 1 is almost cylindrically formed with cast iron, several ring grooves 2 are formed on the peripheral part near its head side, and a recess 3 is formed inside the piston 1. The piston 1 also has a pair of mutually opposing bosses 4 projecting inward, on its lower end side, and pin holes 5, through which a piston pin is inserted, is formed in the bosses 4. In this case, the head part 6 of the piston 1 is made of cast iron which is chilled and formed into a cementite structure. For example, when casting the piston 1, a metal mold is applied to its head part 6 side to cool the part earlier than the rest of the piston, providing a cementite structure having low heat conductivity.