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Injection nozzle having heating element and heat accumulator, and method for introducing an oxidizable fluid into an exhaust system upstream of a catalytic converter or filter

A technology for heating elements and exhaust systems, applied in chemical instruments and methods, separation methods, engine components, etc., can solve the problem of high load

Inactive Publication Date: 2008-09-17
ARVINMERITOR EMISSIONS TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been found that the power consumption of a glow plug with sufficient power for this purpose would result in an unacceptably high load on the vehicle's electronic systems

Method used

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  • Injection nozzle having heating element and heat accumulator, and method for introducing an oxidizable fluid into an exhaust system upstream of a catalytic converter or filter
  • Injection nozzle having heating element and heat accumulator, and method for introducing an oxidizable fluid into an exhaust system upstream of a catalytic converter or filter
  • Injection nozzle having heating element and heat accumulator, and method for introducing an oxidizable fluid into an exhaust system upstream of a catalytic converter or filter

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Embodiment Construction

[0032] figure 1 An internal combustion engine 5 , in particular a diesel engine, is shown schematically, the exhaust gas of which is conveyed via an exhaust line 6 to a catalyst, in particular a catalyst with NOx or a diesel particulate filter. This component serves to reduce the amount of harmful substances in the exhaust gas, which is generally designated here with the reference number 7 . On the discharge pipe 6 , nozzles 8 are mounted, which can be supplied via a line / pump system 9 with an oxidizable fluid, in particular fuel, from a suitable reservoir. The principles of such systems are already known in the prior art. This system is generally used to introduce an oxidizable fluid into the exhaust gas flow upstream of the component 7 in order to initiate the regeneration of the component 7 .

[0033] Nozzle 8 (see figure 2 and 3 ) comprises a housing 10, wherein the housing is provided with an inlet 12 for the oxidizable fluid and an outlet 14 for the evaporated liqui...

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Abstract

The invention relates to an injection nozzle (8), in particular for introducing an oxidizable fluid into an exhaust system upstream of a catalytic converter (7) or filter (7), having a heating element (22) and having a heat accumulator (18) which can be heated by the heating element (22) and can discharge the accumulated heat to the fluid. The invention also relates to a method for introducing an oxidizable fluid into an exhaust system upstream of a catalytic converter (7) or filter (7), wherein an injection nozzle (8) is used which has a heating element (22) and a heat accumulator (18), wherein the heating element (22) is activated before an injection process, so that the heat accumulator (18) is heated up, and the fluid is first injected later, so that the heat accumulator (18) can discharge energy to the fluid and evaporate the latter.

Description

technical field [0001] The invention relates to a nozzle particularly useful for introducing an oxidizable liquid into a discharge system upstream of a catalyst or filter. The invention also relates to a method of introducing an oxidizable liquid into a discharge system upstream of a catalyst or filter. Background technique [0002] Most modern emission systems include diesel particulate filters or NOx storage catalysts. These filters or catalysts must be regenerated at regular intervals, otherwise their flow resistance will increase unduly, or their efficiency will decrease. Regeneration can often be referred to as "burnout" because of the thermal reactions that occur during regeneration. This reaction can be initiated such that the concentration of the air / fuel mixture supplied to the internal combustion engine increases. Alternatively, fuel or some other suitable oxidizable fluid may be directed into the exhaust system upstream of the filter or catalyst. Various syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20F01N3/36B01D53/94
CPCF01N2900/0422F01N2610/146F01N2610/1453Y02T10/24F01N2610/10F01N2610/107F01N3/208F01N3/36Y02T10/12B01D53/94F01N3/20
Inventor 马科·拉纳利凯瑟琳·布雷姆泽
Owner ARVINMERITOR EMISSIONS TECH GMBH