Title:
ENGINE EXHAUST DEVICE
Document Type and Number:
Japanese Patent JPH06117241
Kind Code:
A
Abstract:
PURPOSE: To provide an exhaust device of an engine capable of extremely suppressing the reduction of the fuel consumption while suppressing the exhaust of the unburnt composition.
CONSTITUTION: A pre-three element catalyst 10 is provided in an exhaust passage 9, and the pre-three element catalyst 10 is set so that the exhaust pressure may be inverted toward the upstream in synchronization with the engine speed in the cold running condition.
Inventors:
MORIMASA KEISHIN
MAMIYA KIYOTAKA
YOKOMIZO KATSUHIRO
SHIRAISHI TORU
IMADA MICHIHIRO
MAMIYA KIYOTAKA
YOKOMIZO KATSUHIRO
SHIRAISHI TORU
IMADA MICHIHIRO
Application Number:
JP28554292A
Publication Date:
April 26, 1994
Filing Date:
September 30, 1992
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F01N3/20; F01N3/24; F01N5/04; F01N13/08; (IPC1-7): F01N5/04; F01N3/20; F01N3/24; F01N7/08
Attorney, Agent or Firm:
Murata Minoru
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