Title:
副燃焼室付き内燃機関
Document Type and Number:
Japanese Patent JP7397664
Kind Code:
B2
Abstract:
To provide a structure capable of smoothly jetting flame to an optimum direction from an auxiliary combustion chamber, in an internal combustion engine with the auxiliary combustion chamber.SOLUTION: An auxiliary combustion chamber 13 is disposed in a recessed portion 5 of a cylinder head 3 concentrically with a cylinder bore shaft center O1, and a center electrode 16 and an earth electrode 17 of an ignition plug 15 are exposed inside of the auxiliary combustion chamber 13. At least a lower half portion of an inner surface of the auxiliary combustion chamber 13 is composed of a concave spherical surface, and a center of a discharge gap 18 of the ignition plug 15 is positioned on a center of the auxiliary combustion chamber 13. A shaft center O3 of a flame injection hole 19 passes through a center of the discharge gap 18 (center of auxiliary combustion chamber 13). Flame generated in the auxiliary combustion chamber 13 smoothly flows into the flame injection hole 19 while keeping straightness without direction conversion, and is jetted to the shaft center O3 direction of the flame injection hole 19.SELECTED DRAWING: Figure 1
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Inventors:
Satoru Shimazaki
Application Number:
JP2019236428A
Publication Date:
December 13, 2023
Filing Date:
December 26, 2019
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
International Classes:
F02B19/18; F02B19/12; F02B23/08
Domestic Patent References:
| JP2017137820A | ||||
| JP51089912A | ||||
| JP2017101647A | ||||
| JP53099110A |
Attorney, Agent or Firm:
Hiroyuki Nishi
Ryuichi Watanabe
Ryuichi Watanabe