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1. (WO2014199717) CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2014/199717    International Application No.:    PCT/JP2014/060653
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Tue Apr 15 01:59:59 CEST 2014
IPC: F02F 1/42
F02F 1/24
Applicants: NISSAN MOTOR CO., LTD.
日産自動車株式会社
Inventors: IMAOKA, Yoshihiro
今岡 佳宏
INOUE, Takao
井上 尊雄
Title: CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE
Abstract:
A cylinder head is provided with: an air intake port which connects a connection section of the cylinder head and a combustion chamber, the connection section of the cylinder head being connected to an air intake manifold; and an air intake insert port which is a cylindrical member consisting of a material having lower thermal conductivity and lower specific heat than the base material of the cylinder head, the air intake insert port extending in the air intake port from the connection section, which is connected to the air intake manifold, toward the combustion chamber and functioning as the air intake port. The cylinder head is configured so that, during operation under predetermined operating conditions, the temperature at the combustion chamber-side end of the air intake insert port and the temperature of the base material of the cylinder head measured at the position of the combustion chamber-side end of the air intake insert port are equal.