CONTROL OF SECONDARY AIR TO AN ELECTRICALLY HEATED CATALYST USING FEEDBACK CONTROL

The injection of secondary air into the exhaust system of an internal combustion engine equipped with an electrically heated catalyst (EHC) upstream of a catalytic converter using a secondary pump is controlled by use of a dedicated heated oxygen sensor located downstream of the electrically heated...

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1. Verfasser:	LUCCHESI, ROBERT, P
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL 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 INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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creator	LUCCHESI, ROBERT, P
description	The injection of secondary air into the exhaust system of an internal combustion engine equipped with an electrically heated catalyst (EHC) upstream of a catalytic converter using a secondary pump is controlled by use of a dedicated heated oxygen sensor located downstream of the electrically heated catalyst in the exhaust stream from said EHC. The sensor measures the oxygen content in the EHC exhaust stream and sends a signal to a controller which turns on a secondary air pump when the signal from the heated sensor exceeds a pre-selected set point on the controller thereby injecting supplementary air into the exhaust stream from the internal combustion engine to the EHC.
format	Patent
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The sensor measures the oxygen content in the EHC exhaust stream and sends a signal to a controller which turns on a secondary air pump when the signal from the heated sensor exceeds a pre-selected set point on the controller thereby injecting supplementary air into the exhaust stream from the internal combustion engine to the EHC.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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language	eng ; fre ; ger
recordid	cdi_epo_espacenet_EP0714476A1
source	esp@cenet
subjects	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL 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 INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
title	CONTROL OF SECONDARY AIR TO AN ELECTRICALLY HEATED CATALYST USING FEEDBACK CONTROL
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