Title:
ENGINE DEVICE
Document Type and Number:
Japanese Patent JP2018172991
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable control of both of PM amount suppression and NOx amount suppression in exhaust gas from an engine 70.SOLUTION: An engine device includes: an engine 70; a fuel injection device 117 for injecting fuel to the engine 70; a supercharger 100 driven by exhaust gas from an exhaust system; an EGR device 90 for recirculating a part of the exhaust gas from the exhaust system to an intake system as EGR gas; an aftertreatment device 50 for purifying the exhaust gas from the exhaust system; speed detection means 14 for detecting an engine speed N; boost pressure detection means 85 for detecting a boost pressure P of the intake system; and an engine ECU 11 for controlling operation of the engine 70. When a change of the engine speed M becomes below a predetermined value, a change of a fuel injection amount Q exceeds a predetermined value and the boost pressure P exceeds a predetermined value, the engine ECU 11 opens an EGR valve 94 of the EGR device 90 to an intermediate opening.SELECTED DRAWING: Figure 4
Inventors:
HASHIMOTO YUNOSUKE
KUNISAWA KEIJI
SHIRAMIZU TOSHIKI
IWASE ATSUHITO
OTANI TOMOHIRO
KUNISAWA KEIJI
SHIRAMIZU TOSHIKI
IWASE ATSUHITO
OTANI TOMOHIRO
Application Number:
JP2017070129A
Publication Date:
November 08, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
YANMAR CO LTD
International Classes:
F02D21/08; F02D43/00; F02D45/00
Attorney, Agent or Firm:
Ryuichi Watanabe