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1. (WO2018218268) CYLINDER HEAD COMPRISING VALVE SEAT INSERT COOLING

Pub. No.:    WO/2018/218268    International Application No.:    PCT/AT2018/060112
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Thu May 31 01:59:59 CEST 2018
IPC: F02F 1/38
F01L 3/22
Applicants: AVL LIST GMBH
Inventors: ZURK, Andreas
PÖSCHL, Robert
Title: CYLINDER HEAD COMPRISING VALVE SEAT INSERT COOLING
Abstract:
The invention relates to a cylinder head (1) for an internal combustion engine comprising at least one cylinder, having at least one valve seat insert (5) for a poppet valve, wherein an annular cooling channel (6, 6') is associated with the valve seat insert (5) and extends at least partially around the valve seat at least between at least one inlet opening (70, 70') of an inlet channel (7, 7') and at least one outlet opening (80, 80') of an outlet channel (8, 8'), wherein the inlet channel (7, 7') and the outlet channel (8, 8') are arranged on the same side of the cylinder. In order to improve the cooling of the valve seat and provide a simpler manufacturing process, the inlet channel (7, 7') opens in a tangential direction via the inlet opening (70, 70') into the annular cooling channel (6, 6'), and the outlet channel (8, 8') branches in the tangential direction from the annular cooling channel (6, 6') via the outlet opening (80, 80').