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Title:
CONTROL DEVICE OF ENGINE WITH SUPERCHARGER
Document Type and Number:
Japanese Patent JP2014190236
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To effectively take a countermeasure to surging of a supercharger by using an air bypass valve and effectively discharge condensed water of an intercooler by using intake pressure during engine deceleration operation.SOLUTION: In an engine 1 having a supercharger 7 and an EGR device, an inlet 17b of an EGR passage 17 is connected to an exhaust passage 5 downstream of a turbine 9, and an outlet 17a is connected to an intake passage 3 upstream of a compressor 8. An intercooler 13 is provided in the intake passage 3 downstream of the compressor 8, and a water collecting part 13a is provided in the intercooler 13. A drain passage 45 is provided for draining condensed water in the water collecting part 13a to a drainage destination, and a drain valve 46 is provided for opening and closing the passage 45. An air bypass passage 41 is provided between the intake passage 3 downstream of the compressor 8 and the intake passage 3 upstream of the compressor 8, and an air bypass valve 42 is provided for opening and closing the passage 41. During deceleration operation of the engine 1, an electronic control unit 50 opens the drain valve 46 from a valve closed state and then opens the air bypass valve 42 from a valve closed state.

Inventors:
YOSHIOKA MAMORU
NAKAMURA TAKEHIDE
Application Number:
JP2013066577
Publication Date:
October 06, 2014
Filing Date:
March 27, 2013
Export Citation:
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Assignee:
AISAN IND CO LTD
International Classes:
F02B37/16; F02B29/04; F02B37/00; F02B37/12; F02B39/00; F02B47/02; F02D9/02; F02D23/00; F02M25/022; F02M25/07; F02M35/10
Attorney, Agent or Firm:
Patent business corporation cosmos patent firm



 
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