Title:
ENGINE AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2023084004
Kind Code:
A
Abstract:
To make a heat efficiency improvement request in a middle load operation of an engine and a knocking suppression request in a high load operation compatible.SOLUTION: An engine is equipped with a main combustion chamber that is formed by a cylinder block, a cylinder head, and a piston, a sub chamber 15 that has a plurality of injection holes 18 opening to the main combustion chamber, and an ignition plug 16 that ignites mixture in the sub chamber 15. In the engine, a compression ratio ε of the main combustion chamber is 14 to 24, a drawing ratio β=St/V which is a rate of the total cross-sectional area St of a plurality of injection holes 18 with respect to volume V of the sub chamber 15 is 0.0078 mm-1 to 0.0145 mm-1, and the volume V of the sub chamber 15 is 0.0430 cm3 to 0.5631 cm3.SELECTED DRAWING: Figure 2
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Inventors:
HARADA YUJI
UCHIDA KENJI
ONO RYOHEI
UCHIDA KENJI
ONO RYOHEI
Application Number:
JP2021198059A
Publication Date:
June 16, 2023
Filing Date:
December 06, 2021
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02B19/16; F02P13/00
Attorney, Agent or Firm:
Patent Attorney Corporation Maeda Patent Office