Title:
ENGINE SYSTEM
Document Type and Number:
Japanese Patent JP2023020232
Kind Code:
A
Abstract:
To appropriately combust mixed gas in an auxiliary chamber during a cold start-up.SOLUTION: An engine system 1 comprises: a main combustion chamber 25; an auxiliary chamber 60 which is separated from the main combustion chamber 25 by a bulkhead (64) and communicated with the main combustion chamber 25 through a communication hole 66 formed on the bulkhead (64); an intake air introduction passage (8) in which intake air to be introduced into the main combustion chamber 25 is circulated; a first fuel injection device (26) which injects fuel into the main combustion chamber 25; a second fuel injection device (28) which injects the fuel into the intake air introduction passage (8); an ignition device (62) which ignites mixed gas in the auxiliary chamber 60; and a control unit (100) which controls respective devices. During a cold start-up in which an engine is started up under a condition that an engine water temperature is lower than a threshold, the control unit (100) controls the second fuel injection device (28) and the ignition device (62) so that the fuel is injected from the second fuel injection device (28) in an air intake stroke and the fuel is ignited with the ignition device (62) after fuel is injected.SELECTED DRAWING: Figure 8
Inventors:
ONO RYOHEI
HARADA YUJI
UCHIDA KENJI
HARADA YUJI
UCHIDA KENJI
Application Number:
JP2021125490A
Publication Date:
February 09, 2023
Filing Date:
July 30, 2021
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02B19/12; F02B23/08; F02B23/10; F02P5/155; F02P15/02
Attorney, Agent or Firm:
Masataka Kotani
Sato Ko
Sato Ko