Title:
CONTROLLER OF VARIABLE NOZZLE TYPE SUPERCHARGER
Document Type and Number:
Japanese Patent JP2002047943
Kind Code:
A
Abstract:
To suppress defective operation of a variable nozzle when reducing an opening of the variable nozzle.
When an engine operation is shifted from start time to idle time, a target negative pressure at start time is gradually increased during a first period T (VGT negative pressure is gradually increased) and is set to a target negative pressure at idle time when the first period T ends. Finally, the target negative pressure is set as a control negative pressure to which smoothing control and advance compensation processing is applied, and the VGT negative pressure for closing an opening of the nozzle of a VGT 20 gradually from its fully opened condition is set based on the control negative pressure.
Inventors:
MATSUE KOTA
KAMIMURA TOSHIHIRO
KAMIMURA TOSHIHIRO
Application Number:
JP2000239057A
Publication Date:
February 15, 2002
Filing Date:
August 07, 2000
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02B37/12; F01D17/16; F02B37/24; F02D23/00; (IPC1-7): F02B37/24; F01D17/16; F02B37/12; F02D23/00
Attorney, Agent or Firm:
Yasunori Otsuka (2 outside)