Exhaust gas system for a combustion engine with exhaust driven t

Details Exhaust gas system for a combustion engine with exhaust driven t Exhaust gas system for a combustion engine with exhaust driven t

1996-11-04

1998-01-20

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60280, 60284, 60288, F01N 320

Patent

active

057090815

ABSTRACT:
An exhaust system for an internal combustion engine includes an exhaust turbocharger, and exhaust emission control with 3-way catalysts. In order to shorten the delay until emission control begins after the engine is started, a first catalytic converter is located in the exhaust line downstream from the turbocharger which is always traversed by the exhaust. Downstream of the turbocharger, a second catalytic converter is arranged that is traversed by exhaust only temporarily, with the second catalytic converter being traversed only until the exhaust system has reached a predetermined temperature.

REFERENCES:
patent: 3968645 (1976-07-01), Noguchi
patent: 4122673 (1978-10-01), Leins
patent: 4202176 (1980-05-01), Metzger
patent: 4404804 (1983-09-01), Tadokoro et al.
patent: 5325666 (1994-07-01), Rutschmann
patent: 5345762 (1994-09-01), Lutze
patent: 5377486 (1995-01-01), Servati
Search Report, Feb. 7, 1979, France.

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