COMBUSTION CHAMBER STRUCTURE FOR ENGINE

A combustion chamber structure for an engine includes a combustion chamber that is defined by a cylinder block, a cylinder head, and a piston. The cylinder head includes: a head body that has a lower surface opposing the combustion chamber; and a coat layer that covers the lower surface. The coat la...

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Bibliographische Detailangaben
Hauptverfasser:	Harada, Yuji, Nou, Yoshihisa, Ge, Xiyao, Aoki, Osamu, Uchida, Kenji
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	A combustion chamber structure for an engine includes a combustion chamber that is defined by a cylinder block, a cylinder head, and a piston. The cylinder head includes: a head body that has a lower surface opposing the combustion chamber; and a coat layer that covers the lower surface. The coat layer includes: a heat-insulating layer that is arranged in a region, which opposes a cavity, in the lower surface and has a lower thermal conductivity than the head body; a heat-shielding layer that is arranged to cover the lower surface and has a lower thermal conductivity than the head body and the heat-insulating layer; and a heat diffusion layer that is arranged between the heat-insulating layer and the heat-shielding layer and has a higher thermal conductivity. The heat diffusion layer includes a side end edge and an extending portion, each of which abuts the head body.