Title:
圧縮着火エンジンの制御装置
Document Type and Number:
Japanese Patent JP7124734
Kind Code:
B2
Abstract:
In a compression-ignition engine having a two-stage cavity, the distribution ratio between fuel for an upper cavity and fuel for a lower cavity is maintained even when the operational state of the engine changes. A piston 5 of the compression-ignition engine includes a lower cavity (lower cavity portion 51), an upper cavity (upper cavity portion 52), and a lip portion 53 between the lower cavity and the upper cavity. A control unit (ECU 10) causes a main injection and at least one pilot injection to be executed when the engine 1 operates in a first state and a second state in which the speed is higher than the speed in the first state. The fuel spray is distributed to the lower cavity and the upper cavity. The control unit increases an injection amount per pilot injection when the engine operates in the second state than when the engine operates in the first state.
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Inventors:
Naotoshi Shirahashi
Yasunori Uesugi
Takeshi Matsubara
Yasunori Uesugi
Takeshi Matsubara
Application Number:
JP2019013581A
Publication Date:
August 24, 2022
Filing Date:
January 29, 2019
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D41/38; F02B15/00; F02B23/02; F02B23/06; F02D41/40
Domestic Patent References:
| JP2006200411A | ||||
| JP2006022781A | ||||
| JP2006118427A | ||||
| JP2012041896A | ||||
| JP2007120353A | ||||
| JP2010101243A |
Attorney, Agent or Firm:
Patent Attorney Corporation Maeda Patent Office
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