Mixture delivery device for internal combustion engines

Details Mixture delivery device for internal combustion engines Mixture delivery device for internal combustion engines

1998-06-19

2000-03-28

Denion, Thomas

Power plants

Internal combustion engine with treatment or handling of...

Having retainer or flow director for exhaust gas condensate

60303, 60295, 60286, 2394275, 239428, F01N 302

Patent

active

060415940

ABSTRACT:
A mixture delivery device for introducing a reducing agent into an exhaust gas system of an internal combustion engine in which, a urea-water solution is introduced into a region of the exhaust gas system, upstream of a catalytic converter, through the introduction of compressed air, in order to bring about the reduction of nitrogen oxides in the exhaust gas of the internal combustion engine. The mixture delivery device includes a mixture carrying line, with a first section that extends laterally to the exhaust gas flow and a second section that extends concentrically to a longitudinal axis of the exhaust gas system. The mixture carrying line is inserted into the exhaust gas system, wherein the urea-water solution is injected in the form of a cone into the exhaust gas upstream of the catalytic converter via blow-out openings embodied radially in the second section. The mixture delivery device is particularly suited for delivering a urea-water solution upstream of the catalytic converter in the exhaust gas system of a mixture compressing, spontaneously igniting internal combustion engine.

REFERENCES:
patent: 5189878 (1993-03-01), Robinson et al.
patent: 5272871 (1993-12-01), Oshima et al.
patent: 5522218 (1996-06-01), Lane et al.
patent: 5606856 (1997-03-01), Linder et al.
patent: 5628186 (1997-05-01), Schmelz

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