EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

PURPOSE:To speedily activate a main catalytic converter by performing temperature rise promoting control according to an activated condition of a sub-catalytic converter. CONSTITUTION:A main catalytic converter 18 is arranged on the way of an exhaust passage 15, while a sub-catalytic converter 22 is...

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Bibliographic Details
Main Author OTA TADAKI
Format Patent
LanguageEnglish
Published 28.03.1995
Edition6
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
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
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
WEAPONS
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Summary:PURPOSE:To speedily activate a main catalytic converter by performing temperature rise promoting control according to an activated condition of a sub-catalytic converter. CONSTITUTION:A main catalytic converter 18 is arranged on the way of an exhaust passage 15, while a sub-catalytic converter 22 is installed on the way of a bypass passage 21. An activated condition of the sub-catalytic converter 22 is obtained by a detected temperature of a sub-catalyst outlet temperature sensor 24 and a detected temperature of a sub-catalyst inlet temperature sensor 25. According to the activated condition of the sub-catalytic converter 22, a secondary air amount of an air supply mechanism 27 and an ignition timing by an ignition device 31 are corrected. The temperature of the main catalytic converter 18 is increased for activation.
Bibliography:Application Number: JP19930230609