DISPOSITIVO DI RISCALDAMENTO DEL CATALIZZATORE PER MOTORI A COMBUSTIONE INTERNA CON UN SISTEMA A BRUCIATORE

A pre-heating arrangement for a catalytic converter of an internal combustion engine having a pre-heating burner operated according to a control and regulation program in the cold-running state of the internal combustion engine after start up. The catalytic converter (2) is formed by two converter e...

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Bibliographic Details
Main Authors SCHURFELD ARMIN, HARTEL GUNTER
Format Patent
LanguageItalian
Published 15.12.1993
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:A pre-heating arrangement for a catalytic converter of an internal combustion engine having a pre-heating burner operated according to a control and regulation program in the cold-running state of the internal combustion engine after start up. The catalytic converter (2) is formed by two converter elements (4, 5) between which is a converter chamber (6). Hot gases from the burner enter the converter chamber (6) and mix thereat with the exhaust gas from the internal combustion engine and heat the converter element (5) which is second in line in the direction of engine exhaust gas flow. The first converter element (4) on the upstream side, which is subject to impairment due to aging, is by-passed by the hot gases from the burner, which are thereby employed efficiently to rapidly bring the second catalytic converter element (5) up to operating temperature.
Bibliography:Application Number: IT1993RM00829