Title:
EXHAUST EMISSION CONTROL DEVICE FOR ENGINE
Document Type and Number:
Japanese Patent JPH0849532
Kind Code:
A
Abstract:
PURPOSE: To reduce the generated quantity of smoke and SOx noxious to the durability of an engine and reduce the rate without reducing the EGR effect in an exhaust emission control device provided with an EGR passage for circulating part of the exhaust air from the exhaust passage of the engine to the intake passage.
CONSTITUTION: The exhaust emission control device for an engine is provided with an oxidation catalyst 6 processing the unburnt constituent in the exhaust gas in an EGR passage 4, a reduction catalyst 7 processing the NOx in the exhaust gas in the upstream, and a device 8 adding a reducing agent in the upstream of the reduction catalyst 7.
Inventors:
HIRATA MASANOBU
ASAUMI YASUO
YANAI TOSHIYUKI
ASAUMI YASUO
YANAI TOSHIYUKI
Application Number:
JP18720094A
Publication Date:
February 20, 1996
Filing Date:
August 09, 1994
Export Citation:
Assignee:
NISSAN DIESEL MOTOR CO
International Classes:
F02M25/07; B01D53/86; B01D53/94; F01N3/08; F01N3/24; (IPC1-7): F01N3/24; B01D53/86; B01D53/94; F01N3/08; F02M25/07
Attorney, Agent or Firm:
Masaki Goto (1 person outside)
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