EXHAUST EMISSION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

Title:

EXHAUST EMISSION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO2000068554

Kind Code:

A8

Abstract:

An exhaust emission control device of an internal combustion engine, wherein an exhaust emission control valve (24) disposed in an exhaust pipe (22) of the internal combustion engine is approximately fully closed at the time of start and during the warming-up of the engine, the injection amount of a main fuel is increased over an optimum injection amount for fully opened exhaust emission control valve, and an auxiliary fuel is additionally injected during an expansion stroke, whereby unburned HC exhausted into the atmosphere at the start and during the warming-up of the engine is reduced remarkably.

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Inventors:

ASANUMA TAKAMITSU (JP)
HIROTA SHINYA (JP)
TOSHIOKA SHUNSUKE (JP)
TANAKA TOSHIAKI (JP)

Application Number:

PCT/JP2000/002204

Publication Date:

March 22, 2001

Filing Date:

April 05, 2000

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
ASANUMA TAKAMITSU (JP)
HIROTA SHINYA (JP)
TOSHIOKA SHUNSUKE (JP)
TANAKA TOSHIAKI (JP)

International Classes:

F01N3/08; F01N13/10; F01N13/14; F02B23/10; F02D9/04; F02D21/08; F02D41/02; F02D41/06; F02D41/40; F01N13/02; F01N13/04; F02B75/12; F02F3/26; F02M25/07; (IPC1-7): F02D41/; F02D9/

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