Title:
内燃機関の過給圧制御方法および過給圧制御装置
Document Type and Number:
Japanese Patent JP7294541
Kind Code:
B2
Abstract:
In the present invention, when acceleration is required, a target pressure ratio (tPR) to be reached is set on the basis of a target torque. For the duration that the real pressure ratio (rPR) deviates from the target pressure ratio (tPR), feedback control causes a target wastegate stroke (tWGS) to approach full closure, and thereby the responsiveness of a supercharging pressure is increased. If the intake air quantity (Qa) and the engine rotation speed (NE) exceed criteria for restriction conditions before the target pressure ratio is reached, the target wastegate stroke (tWGS) is restricted such that the degree of opening increases. Consequently, the turbine rotation speed (NT) does not exceed a permitted rotation speed. If the real pressure ratio (rPR) comes close to the target pressure ratio (tPR), the degree of opening is controlled in accordance with the static target wastegate stroke (tWGS) corresponding to the target pressure ratio (tPR).
Inventors:
Satoshi Kojima
Mitsuhiko Kubota
Daisuke Imai
Masashi Morikawa
Mitsuhiko Kubota
Daisuke Imai
Masashi Morikawa
Application Number:
JP2022539820A
Publication Date:
June 20, 2023
Filing Date:
July 28, 2020
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02D23/00; F02B37/18; F02B39/16
Domestic Patent References:
| JP2015108329A | ||||
| JP2005146906A | ||||
| JP2018119473A | ||||
| JP5106455A | ||||
| JP2017198081A |
Foreign References:
| WO2016194141A1 |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Kiyoshi Tomioka
Kiyoshi Tomioka