Title:
A control device of an engine with a supercharger
Document Type and Number:
Japanese Patent JP6005534
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress a torque fluctuation of an engine in response to a state of EGR gas remaining in an intake air path if the engine changes to an acceleration operation after a deceleration operation and EGR restarts.SOLUTION: An EGR device of an engine 1 including a supercharger 7 includes: an EGR path 17 returning a part of exhaust gas discharged from a combustion chamber 16 to an exhaust path 5 into the combustion chamber 16 as EGR gas; and an EGR valve 18 adjusting a flow of the EGR gas in the EGR path 17. The EGR path 17 has an inlet 17b connected to the exhaust path 5 downstream of a turbine 9, and an outlet 17a connected to an intake air path 3 upstream of a compressor 8. An electronic control unit (ECU) 50 calculates an amount and a change of the EGR gas remaining in the intake air path 3 upstream of a throttle valve 21 when the engine 1 performs a deceleration operation. Further, the ECU 50 delays opening of the EGR valve 18 until the amount of the remaining EGR gas decreases to a predetermined amount so as to prevent engine torque down when the engine 1 changes to an acceleration operation after the deceleration operation.
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Inventors:
Mamoru Yoshioka
Takehide Nakamura
Takehide Nakamura
Application Number:
JP2013008055A
Publication Date:
October 12, 2016
Filing Date:
January 21, 2013
Export Citation:
Assignee:
Aisan Industry Co., Ltd.
International Classes:
F02D23/00; F02D9/02; F02D21/08; F02D41/02; F02D41/10; F02D45/00; F02M26/04; F02M26/52; F02P5/15
Domestic Patent References:
| JP2012225215A | ||||
| JP8218946A | ||||
| JP8028365A | ||||
| JP2012017708A | ||||
| JP6123258A |
Foreign References:
| WO2011161980A1 |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office