Title:
CYLINDER HEAD
Document Type and Number:
WIPO Patent Application WO/2019/009347
Kind Code:
A1
Abstract:
In a thinnest portion (MI) wherein the thickness of a partitioning section (81) becomes smallest in a cross-section formed by cutting an air intake passage (80) in the long side direction, the minimum thickness of the partitioning section (81) is represented by T1, and the length of a first virtual perpendicular line (VL1) reaching a main flow channel (80B) by extending from a width-direction end portion of a tumble flow channel (80A) is represented by L1. Furthermore, the maximum thickness of the partitioning section (81) obtained in a thickest portion (MA) is represented by T2, and the length of a second virtual perpendicular line (VL2) reaching the main flow channel (80B) by extending from the width-direction end portion of the tumble flow channel (80A) is represented by L2. The value of L1 is set larger than that of L2.
Inventors:
OIKAWA HIRONOBU (JP)
KAMEDA KEIGO (JP)
TSUJI MASAHIRO (JP)
FUJIKUBO MAKOTO (JP)
NAKAMURA YOHEI (JP)
KAMEDA KEIGO (JP)
TSUJI MASAHIRO (JP)
FUJIKUBO MAKOTO (JP)
NAKAMURA YOHEI (JP)
Application Number:
PCT/JP2018/025449
Publication Date:
January 10, 2019
Filing Date:
July 05, 2018
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
F02F1/42; B22C9/02; B22C9/24; F02B31/04; F02F1/24
Foreign References:
| JPH11210479A | 1999-08-03 | |||
| JPH10231729A | 1998-09-02 | |||
| US4930468A | 1990-06-05 | |||
| JP2016173049A | 2016-09-29 | |||
| JPH11218029A | 1999-08-10 | |||
| JP2016173049A | 2016-09-29 |
Other References:
See also references of EP 3650680A4
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (JP)
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