Exhaust control device of internal combustion engine

Details Exhaust control device of internal combustion engine Exhaust control device of internal combustion engine

1995-12-26

1997-04-08

Kwon, John T.

Power plants

Internal combustion engine with treatment or handling of...

Having sensor or indicator of malfunction, unsafeness, or...

60276, F01N 300

Patent

active

056177224

ABSTRACT:
The leak of exhaust system is detected by leak detection element, and when leak was detected, the diagnosis relating to air-fuel ratio feedback control or catalyst is stopped or corrected. A place and an amount of the leak are detected and as various control or diagnosis etc. are stopped or corrected according to the detected effect, over heat of the catalyst, incrementation of the harmful exhaust-gas and the false diagnosis of the catalyst can be prevented suitably.

REFERENCES:
patent: 5237818 (1993-08-01), Ishii et al.
patent: 5419183 (1995-05-01), Keys
patent: 5428989 (1995-07-01), Jerde et al.
patent: 5526643 (1996-06-01), Mukaihira et al.
patent: 5533332 (1996-07-01), Uchikawa

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