DEVICE AND METHOD FOR EXHAUST GAS CIRCULATION OF INTERNAL COMBUSTION ENGINE

Title:

DEVICE AND METHOD FOR EXHAUST GAS CIRCULATION OF INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2001/090554

Kind Code:

A1

Abstract:

An exhaust gas circulation device of internal combustion engine having a turbocharger, comprising an exhaust gas passage having a turbine provided therein and an intake air passage having a compressor provided therein, wherein an opening formed in the intake air passage on the downstream side of the compressor is opened when the exhaust gas is circulated, whereby, because intake air on the downstream side of the compressor is discharged into the atmosphere and a negative pressure inside the intake air passage lowers, a pressure difference between the exhaust gas pressure inside the exhaust gas passage and a negative pressure inside the intake air passage is increased, and the NOx discharge volume can be reduced through an increase in an exhaust gas circulating ratio.

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Inventors:

KOBAYASHI NOBUHIRO (JP)
KOBAYASHI SHIGEMI (JP)
MATSUMOTO TAKAAKI (JP)
KAISE NOZOMI (JP)

Application Number:

PCT/JP2001/002820

Publication Date:

November 29, 2001

Filing Date:

March 30, 2001

Export Citation:

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Assignee:

NISSAN DIESEL MOTOR CO (JP)
KOBAYASHI NOBUHIRO (JP)
KOBAYASHI SHIGEMI (JP)
MATSUMOTO TAKAAKI (JP)
KAISE NOZOMI (JP)

International Classes:

F02B37/00; F02B37/16; F02D21/08; F02D23/00; F02B33/44; F02D41/02; F02D43/00; F02M25/07; F02B29/04; (IPC1-7): F02D23/00; F02D21/08; F02B37/00; F02B37/12; F02M25/07

Foreign References:

JPH08177597A	1996-07-09
JPH0586990A	1993-04-06
JPH03222819A	1991-10-01
JPH0586949A	1993-04-06
JPH08291713A	1996-11-05

Other References: