Title:
内燃機関の吸気ポート構造
Document Type and Number:
Japanese Patent JP6747573
Kind Code:
B2
Abstract:
In an engine (1), when an intake valve (16) opens, a downstream end portion (61) of a first intake port (6) extends to direct to between a shade back (162a) positioned on a cylinder axis (C) side with respect to a valve stem (161) and a ceiling surface (51) facing the shade back (162a). As viewed in a section perpendicular to a direction perpendicular to an intake air flow direction, a second intake port side inner wall surface (61a) at the downstream end portion (61) of the first intake port (6) curves apart from a second intake port (7) in a direction from an exhaust side to an intake side as compared to the shape of an opposite second intake port side inner wall surface (61b) mirror-reversed to a second intake port (7) side.
Inventors:
Yasushi Nakahara
Yohei Suzuki
Tsuyoshi Yamamoto
Tsuneo Kono
Yuya Honda
Onishi Kento
Yohei Suzuki
Tsuyoshi Yamamoto
Tsuneo Kono
Yuya Honda
Onishi Kento
Application Number:
JP2019502420A
Publication Date:
August 26, 2020
Filing Date:
March 03, 2017
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02F1/42; F02B31/08
Domestic Patent References:
| JP7332096A | ||||
| JP2016173087A |
Attorney, Agent or Firm:
Maeda patent office