Exhaust system for a multi-cylinder internal combustion engine

Details Exhaust system for a multi-cylinder internal combustion engine Exhaust system for a multi-cylinder internal combustion engine

1995-09-01

1996-12-10

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60302, F01N 328

Patent

active

055820042

ABSTRACT:
A multi-cylinder internal combustion engine is provided with a group of constantly operated cylinders and a group of cylinders that can be switched off. An exhaust line having a catalytic converter is associated with each group of cylinders. A shutoff element is disposed downstream of the catalytic converter of the constantly operated cylinder subassembly. In addition, the two exhaust lines or the two catalytic converters are connected to each other via a bypass line. Maintaining the temperature of the second catalytic converter is made possible via the bypass line, even when the cylinders of the second group are not operated and when the exhaust line is closed.

REFERENCES:
patent: 3943710 (1976-03-01), Lange
patent: 3984975 (1976-10-01), Price
patent: 4107921 (1978-08-01), Iizuka
patent: 4287716 (1981-09-01), Schuster
patent: 5325666 (1994-07-01), Rutschmann

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