Title:
CYLINDER DIRECT INJECTION INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3539131
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve combustion efficiency by enclosing swirl including fuel mist in a recessed part.
SOLUTION: As intake swirl is generated along the inside of a cylinder, fuel is directly injected into a combustion chamber, and combustion is started by ignition by a spark plug 1. A roughly circular recessed part 5 is formed at an eccentric position in a piston top surface 4. The recessed part 5 has a roughly vertical inner circumferential wall surface 5a in a piston axial line direction, and a flat bottom surface 5b of a roughly constant depth, and the inner circumferential wall surface 5a and the bottom surface 5b are connected to each other by diagonal surfaces 5c-5e. Compared to the swirl inflow side into the recessed part 5, a vertical part of the inner circumferential wall surface 5a is long on the swirl collision side, where the diagonal surface 5d is short.
Inventors:
Tsuyoshi Taniyama
Hiroshi Miyakubo
Nobuhisa Jingu
Hiroshi Miyakubo
Nobuhisa Jingu
Application Number:
JP14657697A
Publication Date:
July 07, 2004
Filing Date:
June 04, 1997
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02B17/00; F02B23/08; F02B23/10; F02F3/26; F02B75/12; (IPC1-7): F02B23/10; F02B17/00; F02B23/08; F02F3/26
Domestic Patent References:
| JP7083058A | ||||
| JP8260986A | ||||
| JP8246878A | ||||
| JP8035429A | ||||
| JP10205413A | ||||
| JP10299539A | ||||
| JP10299537A | ||||
| JP11148355A | ||||
| JP9317477A | ||||
| JP4187840A | ||||
| JP5240051A | ||||
| JP7102976A | ||||
| JP2014425U |
Attorney, Agent or Firm:
Masaki Goto
Yoshio Matsuda
Yoshio Matsuda