Installation for the catalytic afterburning of exhaust gases of a multi-cylinder internal combustion engine
AssigneeDr. Ing.h.c.F. Porsche Aktiengesellschaft
InventorKarlheinz Lange
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Abstract
An installation for the catalytic afterburning of exhaust gases of a multi-cylinder internal combustion engine with two exhaust gas lines of which each includes at least one catalyst; means are thereby provided for conducting the entire exhaust gas stream, when the internal combustion engine is cold, only through one of the two catalysts for a predetermined time.
Claims11
An installation for the catalytic afterburning of exhaust gases of a multi-cylinder internal combustion engine having two cylinder rows with two exhaust gas lines, each of which includes at least one catalyst means, coordinated to each cylinder row and communicating with each other only downstream of the cylinder rows, characterized by temperature-responsive means operable during engine start-up to conduct substantially the entire exhaust gas flow from the internal combustion engine during warmup for a predetermined time by way of only one of the two catalyst means and then after a short period of time to conduct the exhaust gas flow from each row of cylinders by way of its associated gas line and catalyst means.
Dependencies are inferred from the claim text.