Title:
EXHAUST EMISSION CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/1997/016632
Kind Code:
A1
Abstract:
To accomplish an optimum regeneration operation of an exhaust emission control apparatus (124), the quantity of nitrogen oxide (C) absorbed in catalysts (125, 812) and an exhaust gas temperature (T) are predicted on the basis of future driving condition information obtained from a car navigation system (141, 841), etc., and an appropriate time for regeneration is determined at which the absorption quantity of the catalysts (125, 812) is expected to be large and the exhaust gas temperature (T) is expected to be in a predetermined temperature range. When the time for regeneration is reached, the exhaust gas is made rich and the nitrogen oxides are emitted from the catalyst (125, 812) to regenerate the catalyst. The nitrogen oxides emitted from the catalyst (125, 812) are reduced to innoxious substances by unburnt hydrocarbons in the exhaust gas, etc. When this apparatus is applied to a particulate filter (814) of a diesel engine, the chance of operation for raising the exhaust gas temperature (T) decreases, so that deterioration of the fuel cost can be restricted.
Inventors:
KINUGASA YUKIO (JP)
IGARASI KOUHEI (JP)
ITOU TAKAAKI (JP)
IGARASI KOUHEI (JP)
ITOU TAKAAKI (JP)
Application Number:
PCT/JP1996/003184
Publication Date:
May 09, 1997
Filing Date:
October 30, 1996
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
KINUGASA YUKIO (JP)
IGARASI KOUHEI (JP)
ITO TAKAAKI (JP)
KINUGASA YUKIO (JP)
IGARASI KOUHEI (JP)
ITO TAKAAKI (JP)
International Classes:
F01N3/023; F01N3/025; F01N3/027; F01N3/08; F01N3/20; F01N3/28; F02D41/02; F01N9/00; F02B3/06; (IPC1-7): F01N3/20; F01N3/02
Domestic Patent References:
| WO1993007363A1 | 1993-04-15 |
Foreign References:
| JPH0559929A | 1993-03-09 | |||
| JPH0650130A | 1994-02-22 | |||
| JPH0734854A | 1995-02-03 | |||
| JPH01318715A | 1989-12-25 |
Other References:
See also references of EP 0859132A4
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