Title:
過給エンジン
Document Type and Number:
Japanese Patent JP6962241
Kind Code:
B2
Abstract:
To improve the acceleration response by reducing the pumping loss during acceleration in an engine equipped with an electric supercharger and a turbocharger.SOLUTION: When an engine is operated in a predetermined low load area, a first EGR valve is opened and a second EGR valve is closed so that a low-pressure EGR is executed and a high-pressure EGR is stopped; when an acceleration request to shift from a low load area to a high load side area where turbocharging is required is confirmed, the electric supercharger (motor for supercharge) is driven with the first EGR valve open and the second EGR valve closed; afterward, when the increase rate of accelerator opening is less than the predetermined threshold, the motor for supercharge is stopped and the high-pressure EGR is started by opening the second EGR valve.SELECTED DRAWING: Figure 9
Inventors:
Kenichi Morimi
Application Number:
JP2018039525A
Publication Date:
November 05, 2021
Filing Date:
March 06, 2018
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D43/00; F02B23/10; F02B37/00; F02B37/013; F02B37/04; F02B37/12; F02D41/04; F02M26/08; F02M26/53
Domestic Patent References:
| JP2009222007A | ||||
| JP2013170455A | ||||
| JP2009228448A | ||||
| JP2009221848A | ||||
| JP2010255525A |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Ko Sato
Masataka Otani
Ko Sato
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