Title:
圧縮着火式エンジンの制御装置
Document Type and Number:
Japanese Patent JP7143755
Kind Code:
B2
Abstract:
To suppress combustion noise by proactively correcting the mode of pre-injection when combustion environmental factors vary.SOLUTION: A control device for a compression ignition engine executes pre-injection P1 and main injection P3 so that heat generation characteristics including a first peak HAp and a second peak HBp are obtained, and sets an interval Z between the first peak HAp and the second peak HBp to be such an interval that pressure waves generated by the combustion of fuels through the pre-injection P1 and the main injection P3, respectively, counteract each other. When a catalyst is determined to be not warmed up, the control device increases the retard amount of an intake valve closing timing relative to an intake bottom dead center, increases the injection amount of the pre-injection P1, and increases the advance amount of an injection timing for the pre-injection P1 relative to a compression top dead center, further than when the catalyst is determined to be already warmed up under the same engine load and speed conditions.SELECTED DRAWING: Figure 19
Inventors:
Ken Matsuo
Yoshie Tsunoda
Kim Nao
Shige Daisuke
Yoshie Tsunoda
Kim Nao
Shige Daisuke
Application Number:
JP2018240599A
Publication Date:
September 29, 2022
Filing Date:
December 25, 2018
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D41/38; F01N3/20; F01N3/24; F02D13/02; F02D41/02; F02D41/04; F02D41/40; F02D45/00
Domestic Patent References:
| JP2017115720A | ||||
| JP2003035178A | ||||
| JP2012087706A | ||||
| JP2006002701A | ||||
| JP2018112140A | ||||
| JP2016166587A | ||||
| JP2015078619A | ||||
| JP2017180140A | ||||
| JP2012041895A | ||||
| JP2017057758A | ||||
| JP2015113790A | ||||
| JP2010190187A | ||||
| JP2008038600A |
Foreign References:
| WO2011118028A1 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Kotani
Sato Ko
Masataka Kotani
Sato Ko