Title:
予混合圧縮着火式エンジンの制御装置
Document Type and Number:
Japanese Patent JP6631575
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control device of a compression ignition type engine which is favorably maintained in exhaust performance, suppressed in a cooling loss, and can obtain homogeneous charge compression ignition combustion in a wide engine load area.SOLUTION: In a first region A1_a in which an engine load becomes not smaller than a second reference load T2, fuel is injected into a combustion chamber 10 in a latter half of a compression stroke so that a fuel concentration immediately before a start of combustion in a center portion of the combustion chamber 10 becomes higher than that in an external peripheral portion, and water is injected into the combustion chamber 10 in a latter half of the compression stroke by a water injection valve 57, and on the other hand, in a second region A1_b in which the engine load is smaller than the second reference load T2, the fuel is injected into the combustion chamber 10 in a latter half of the compression stroke so that the fuel concentration immediately before a start of the combustion in the center portion of the combustion chamber 10 becomes higher than that in the external peripheral portion, and on the other hand, the injection of the water by the water injection valve 57 is stopped.SELECTED DRAWING: Figure 14
Inventors:
Nobuyuki Ota
Katsuharu Kuzu
Katsuharu Kuzu
Application Number:
JP2017069672A
Publication Date:
January 15, 2020
Filing Date:
March 31, 2017
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D19/12; F02B23/10; F02B47/02; F02D23/02; F02D41/02; F02D41/04; F02D41/38; F02D41/40; F02M25/025
Domestic Patent References:
| JP2017025775A | ||||
| JP2010236496A | ||||
| JP2013024094A | ||||
| JP2016135991A |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Ko Sato
Masataka Otani
Ko Sato