Title:
直噴エンジン
Document Type and Number:
Japanese Patent JP7196405
Kind Code:
B2
Abstract:
To provide a direct-injection engine which can further improve thermal efficiency by reducing a cooling loss by generating a proper tumble flow in a combustion chamber.SOLUTION: A ceiling face 3a of a combustion chamber 10 is a pent roof-shaped ceiling face having an intake-side inclination face 3d and an exhaust-side inclination face 3e. When assuming virtual planes L, Lorthogonal to a center axis Axof a cylinder 1a, an inclination angle θformed by the exhaust-side inclination face 3e and the virtual plane Lis smaller than an inclination angle θformed by the intake-side inclination face 3d and the virtual plane L. Also, when planarly viewing an intake port 6 from one side of the center axis Ax, the intake port 6 is arranged so as to be oriented to the outside of the cylinder 1a in a radial direction with respect to a virtual center line along an intake/exhaust direction (In-Ex direction). A fuel injection valve is constituted so as to intermittently perform fuel injection several times at a latter stage of a compression stroke in a low-load region of the direct injection engine.SELECTED DRAWING: Figure 3
Inventors:
Yoshio
Nobuyuki Ota
Akira Kageyama
Nobuyuki Ota
Akira Kageyama
Application Number:
JP2018045747A
Publication Date:
December 27, 2022
Filing Date:
March 13, 2018
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D41/04; F02B23/10; F02D41/02; F02D41/34
Domestic Patent References:
| JP2018025116A | ||||
| JP2016217312A | ||||
| JP10317972A | ||||
| JP2007032560A | ||||
| JP10159568A | ||||
| JP11002158A | ||||
| JP10054245A | ||||
| JP2003254067A | ||||
| JP10131758A |
Foreign References:
| WO1996030633A1 |
Attorney, Agent or Firm:
Masataka Kotani
Tsutomu Fukunari
Tsutomu Fukunari
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