EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

PURPOSE:To efficiently purify exhaust gas taking account of the variation due to temperature in the NOx absorbing capacity of a NOx absorbent. CONSTITUTION:NOx absorbent units 5a are connected in parallel in the exhaust passage 3 of an internal combustion engine 1, and the exhaust gas is alternately...

Full description

Saved in:
Bibliographic Details
Main Authors HIROTA SHINYA, OBATA KIYOSHI, ARAKI YASUSHI, HARADA YASUO
Format Patent
LanguageEnglish
Published 18.04.1995
Edition6
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
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To efficiently purify exhaust gas taking account of the variation due to temperature in the NOx absorbing capacity of a NOx absorbent. CONSTITUTION:NOx absorbent units 5a are connected in parallel in the exhaust passage 3 of an internal combustion engine 1, and the exhaust gas is alternately changed over by respective exhaust changeover valves 2, 22, so that the NOx absorbent units 5a are alternately reproduced. The exhaust temperatures passing through the NOx absorbent units are detected by exhaust temperature sensors 7a, 7b, and an engine control unit (ECU) 20 calculates an optimum absorbing time based on the variation due to temperature in the NOx absorbing capacity of the NOx absorbent, and changes over the respective exhaust changeover valves in accordance with the calculated absorbing time.
Bibliography:Application Number: JP19930245069