Title:
エンジンの吸気ポート構造
Document Type and Number:
Japanese Patent JP6524728
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To strengthen a swirl flow within a fuel chamber without making the structure of an engine complex.SOLUTION: An intake port 5, on one side, of a plurality of intake ports is constituted as an upstream part reduction intake port in which, in a plan view along a shaft center direction of a seat ring, a cross sectional area of a flow channel formed by inner faces of intake ports 5 successive in an upstream side of an inner face of a seat ring is set smaller than that of a flow channel formed by the inner face of the seat ring. The upstream part reduction intake port has an intake port structure of an engine in which an inner wall 5d further from a suction/exhaust center line A connecting an intake air side center D and an exhaust air side center C of an inner peripheral wall of a cylinder bore constituting a combustion chamber is gradually inclined in a direction further from the suction/exhaust center line A in a position closer to the combustion chamber. A fuel injection by a port injection valve 9 which injects fuel into the intake port 5 is carried out to an intake port 5, on the other side, being not the upstream part reduction intake port.SELECTED DRAWING: Figure 1
Inventors:
Ryo Morioka
Satoshi Yoshikawa
Yoshiyuki Hoshiba
Satoshi Yoshikawa
Yoshiyuki Hoshiba
Application Number:
JP2015051614A
Publication Date:
June 05, 2019
Filing Date:
March 16, 2015
Export Citation:
Assignee:
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
International Classes:
F02F1/42; F02B23/08; F02B31/06; F02B31/08; F02M26/19; F02M26/20
Domestic Patent References:
| JP2009057830A | ||||
| JP6081719A | ||||
| JP6117250A |
Foreign References:
| EP0281015A2 |
Attorney, Agent or Firm:
Naoya Kamata
Bunji Kamada
Yaichiro Nakatani
Takashi Shimizu
Masanori Akatsuka
Bunji Kamada
Yaichiro Nakatani
Takashi Shimizu
Masanori Akatsuka