Title:
CONTROL DEVICE FOR ENGINE
Document Type and Number:
Japanese Patent JP2022167346
Kind Code:
A
Abstract:
To provide a control device for an engine capable of suppressing a generation amount of NOx while securing startability at restart of an engine.SOLUTION: Oxygen concentration adjustment control for adjusting an opening degree of a throttle valve and an opening degree of an EGR valve so that oxygen concentration in an intake passage downstream of a connection part becomes a predetermined target value that is lower than oxygen concentration in the atmosphere is executed from execution of fuel cut to stop of rotation of an output shaft. After execution of the oxygen concentration adjustment control, the throttle valve is maintained in a fully closed state, and after a restarting condition is satisfied, the throttle valve is opened. From stop of the rotation of the output shaft until the throttle valve is opened, the opening degree of the EGR valve is increased.SELECTED DRAWING: Figure 5
Inventors:
YAMAKAWA HIROTAKA
TANIMURA KENJI
SUGANO HIROSHI
KOBAYASHI TORU
MINAMOTO HIROSHI
TANIMURA KENJI
SUGANO HIROSHI
KOBAYASHI TORU
MINAMOTO HIROSHI
Application Number:
JP2021073094A
Publication Date:
November 04, 2022
Filing Date:
April 23, 2021
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02D45/00; F02D9/02; F02D17/00; F02D17/02; F02D21/08; F02D29/02; F02D41/04; F02D41/06; F02D43/00; F02M26/05; F02M26/52
Attorney, Agent or Firm:
Masataka Kotani
Etsushi Kotani
Sato Ko
Etsushi Kotani
Sato Ko