Title:
CONTROL METHOD AND CONTROL DEVICE FOR ENGINE
Document Type and Number:
Japanese Patent JP2021110326
Kind Code:
A
Abstract:
To provide a control method and control device for an engine capable of reliably improving heat efficiency.SOLUTION: In an engine provided with an intake valve 8, an exhaust valve 9, a fuel supply device 11, and a water injection device 12 that injects water into a combustion chamber 10, in addition to a combustion step of combusting a mixture of fuel and air supplied from the fuel supply device 11 in the combustion chamber 10, during the period from a valve closing timing EVC of the exhaust valve 9 to a valve closing timing IVC of the intake valve 8, a water injection step of injecting water from the water injection device 12 into the combustion chamber 10 is executed. Then, a water injection end crank angle tw_limit (CA), which is a crank angle timing at which the water injection ends, is advanced more when an engine speed is high than when it is low.SELECTED DRAWING: Figure 8
Inventors:
NAKAMOTO YOSHIHISA
SETO SUKETOSHI
YASUTOMI KATSUAKI
KAMISHIRO TAKEHIRO
HORI HAYAKI
FUJIMOTO MASAHIKO
YAMASHITA HIROYUKI
SETO SUKETOSHI
YASUTOMI KATSUAKI
KAMISHIRO TAKEHIRO
HORI HAYAKI
FUJIMOTO MASAHIKO
YAMASHITA HIROYUKI
Application Number:
JP2020004847A
Publication Date:
August 02, 2021
Filing Date:
January 16, 2020
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02D19/12; F02B47/02; F02M25/025
Domestic Patent References:
| JP2016138503A | 2016-08-04 | |||
| JP2018173000A | 2018-11-08 | |||
| JP2019100292A | 2019-06-24 | |||
| JP2018087520A | 2018-06-07 |
Foreign References:
| WO2019230251A1 | 2019-12-05 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Ko Sato
Masataka Otani
Ko Sato