To desulfurize an inlet, by heating the inlet of an oxidation catalyst with a small-sized burner requiring only small amounts of fuel and combustion air.
The desulfurization device includes: a burner 23 arranged to obliquely spray fuel with combustion air in a fan-like manner, from the side of the inlet of the oxidation catalyst 14; a plurality of small-sized oxidation catalyst pieces 31 disposed between the injection port of the burner 23 and the inlet of the oxidation catalyst 14 to be arranged in a fan-like manner in an injection direction of the fuel from the injection port; a discharge terminal 32 igniting the fuel injected from the injection port of the burner 23; a bypass conduit 34 extracting part of exhaust gas 9 flowing in an exhaust system path and blowing the exhaust gas toward the inlet of the oxidation catalyst 14 through the conduit in the small-sized catalyst piece 31; and a fuel injection device performing post-injection for adding the fuel into the exhaust gas 9 upstream of the bypass conduit 34.
JP2000320322A | 2000-11-21 | |||
JP2002089327A | 2002-03-27 | |||
JP2007146700A | 2007-06-14 | |||
JPH0586845A | 1993-04-06 |
Next Patent: START CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE FOR AUTOMOBILE