Title:
DECELERATION CONTROL METHOD AND DECELERATION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE WITH TURBOCHARGER
Document Type and Number:
Japanese Patent JP2021165548
Kind Code:
A
Abstract:
To solve a problem that, when a waste gate valve 24 is opened at deceleration, high-temperature exhaust emission flows into a catalyst device 23 at a downstream side of a turbine 12B, thus causing thermal deterioration.SOLUTION: A compressor 12A of a turbocharger 12 is constituted as a variable capacity compressor having an inlet area variable mechanism 19. When prescribed deceleration is required, a capacity of the compressor 12A is reduced prior to an increase of an opening of a waste gate valve 24, and after the lapse of a delay time ΔT, the increase of the opening of the waste gate valve 24 is started. In order to avoid a surge of the compressor 12A, an opening of a throttle valve 11 is reduced in a stage at which intake pressure P reaches a prescribed threshold P1 or lower.SELECTED DRAWING: Figure 1
Inventors:
KIMURA MASAYASU
Application Number:
JP2020069927A
Publication Date:
October 14, 2021
Filing Date:
April 08, 2020
Export Citation:
Assignee:
NISSAN MOTOR
RENAULT SAS
RENAULT SAS
International Classes:
F02D23/00; F02B37/18; F02B37/24; F02D43/00
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tomioka Kiyoshi