EXHAUST EMISSION CONTROL DEVICE AND EXHAUST EMISSION CONTROL METHOD FOR NATURAL GAS ENGINE

Title:

EXHAUST EMISSION CONTROL DEVICE AND EXHAUST EMISSION CONTROL METHOD FOR NATURAL GAS ENGINE

Document Type and Number:

WIPO Patent Application WO/2002/012688

Kind Code:

A1

Abstract:

A natural gas engine capable of exhaust emission control over the entire temperature range and at low costs without requiring a complicated structure. An adsorbent (7) is disposed between a fuel tank (4) and a fuel supply port (5) on a suction air passage (2), and NMOG in the fuel gas supplied to the fuel tank (4) is adsorbed by the adsorbent (7) to purify the fuel gas in advance. When the temperature of a catalyst (11) disposed on an exhaust passage (3) reaches an activating temperature, the adsorbent (7) is heated by a heater (9) to a desorption temperature to desorb NMOG from the adsorbent (7) and purify the NMOG by the catalyst (11).

Inventors:

OKU MASARU (JP)
OGASA HIROSHI (JP)
KOHNO MARI (JP)

Application Number:

PCT/JP2001/004661

Publication Date:

February 14, 2002

Filing Date:

June 01, 2001

Export Citation:

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Assignee:

HONDA MOTOR CO LTD (JP)
OKU MASARU (JP)
OGASA HIROSHI (JP)
KOHNO MARI (JP)

International Classes:

B01D53/94; F01N3/08; F01N3/18; F01N3/24; F01N3/28; F02D19/02; F02M21/02; F02M27/00; F02M27/02; F02M25/08; (IPC1-7): F01N3/24

Foreign References:

JPS59105049U	1984-07-14
JPH06264821A	1994-09-20
JPH0633752A	1994-02-08

Other References: