Title:
INTERNAL COMBUSTION ENGINE CONTROL UNIT
Document Type and Number:
Japanese Patent JP2016017416
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve a capability to remove deposits adhering to an injection tip of a fuel injection valve without degrading fuel economy.SOLUTION: If continuous operation time in a deposit region in which deposits are possibly attached and accumulated onto an injection tip of a fuel injection valve is equal to or longer than predetermined time T1, a compression ratio is reduced down to a predetermined low compression ratio ε1 (S3). It is thereby possible to improve a capability to remove the deposits adhering to the injection tip of the fuel injection valve without degrading fuel economy. If it is determined that deposits adhere to the injection tip of the fuel injection valve even after the compression ratio is reduced down to the low compression ratio ε1 (S4), a fuel pressure is raised up to a high fuel pressure P1 (S6).SELECTED DRAWING: Figure 4
Inventors:
KATSUMA SEIJI
KOBAYASHI ATSUSHI
KOBAYASHI ATSUSHI
Application Number:
JP2014139248A
Publication Date:
February 01, 2016
Filing Date:
July 07, 2014
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
F02D15/02; F02D41/14; F02D41/22; F02D43/00; F02D45/00
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tsuyoshi Hashimoto
Tomioka Kiyoshi
Tsuyoshi Hashimoto