METHOD FOR MANUFACTURING CYLINDER HEAD, AND CYLINDER HEAD ROUGH MATERIAL
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Applicant
LTD. NISSAN MOTOR CO.
Representative
Grünecker Patent- und Rechtsanwälte PartG mbB
Application number
EP18923946A1
Kind
A1
Document number
3816422
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METHOD FOR MANUFACTURING CYLINDER HEAD, AND CYLINDER HEAD ROUGH MATERIAL

3816422 - EP18923946A1 - EPO

Application Jun 28, 2018 - Publication May 05, 2021

Masahiro OOMORI Hirohisa SHIBAYAMA Kenji YAGETA

Abstract

The disclosure includes manufacturing a semimanufactured cylinder head (3) having a shielding curtain portion (16g) and spraying metal powder (P) onto an annular valve seat portion (16f) using a cold spray method to form a valve seat film (16b). The shielding curtain portion (16g) projects in an annular shape from an annular edge portion of an opening portion (16a) of an intake port (16) or an opening portion (17a) of an exhaust port (17) toward the center (C) of the port. The annular valve seat portion (16f) is located on an outer side of the port than the shielding curtain portion (16g).

Description

Claims

Patent References

Patent Publication Date Title
WO2017022505A N/A N/A
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