EXHAUST EMISSION PURIFIER OF DIESEL ENGINE

Japanese Patent JP3951630

B2

PROBLEM TO BE SOLVED: To efficiently purify the exhaust emission by effectively applying these functions when providing a NOx trap catalyst 11 and a HC trap catalyst 12 in an exhaust emission passage 8.
SOLUTION: The NOx trap tolerance limit of the NOx trap catalyst 11 is calculated by detecting the carrier temperature of the NOx trap catalyst 11 and the NO trap amount. The HC trap tolerance limit of the HC trap amount are calculated by detecting the carrier temperature of the HC trap catalyst 12 and the HC trap amount. The emission amount of NOx and the emission amount of HC from the engine are controlled in relation of the trade-off by controlling the fuel injection timing or EGR ratio, based on the NOx tolerance limit and the HC trap tolerance limit.

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JP2000084365	PURIFYING DEVICE FOR EXHAUST FROM INTERNAL COMBUSTION ENGINE

Manabu Miura

JP2001127506A

August 01, 2007

April 25, 2001

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Nissan Motor Co., Ltd

F01N3/24; F02M25/07; B01D53/94; F01N3/08; F01N3/28; F02D21/08; F02D41/04; F02D41/06; F02D41/14; F02D43/00; F02D45/00; (IPC1-7): F01N3/24; B01D53/94; F01N3/08; F01N3/28; F02D21/08; F02D41/04; F02D41/06; F02D41/14; F02D43/00; F02D45/00; F02M25/07

JP2000320386A
JP2000356155A
JP8121259A
JP57146041A
JP11117789A
JP11081991A
JP11153022A

Tomijio Sasashima

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