Heating apparatus for internal combustion engine exhaust aftertreatment

a technology for internal combustion engines and heating apparatuses, which is applied to mechanical apparatus, engines, machines/engines, etc., can solve the problems of insufficient exhaust temperature, cost, and complexity of operation, and achieve the effect of shortening the diesel particulate filter, convenient and convenient use, and simplifying the control of both systems

a technology for internal combustion engines and heating apparatuses, which is applied to mechanical apparatus, engines, machines/engines, etc., can solve the problems of insufficient exhaust temperature, cost, and complexity of operation, and achieve the effect of shortening the diesel particulate filter, convenient and convenient use, and simplifying the control of both systems

US20130125543A1Inactive Publication Date: 2013-05-23MACK TRUCKS
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  • Heating apparatus for internal combustion engine exhaust aftertreatment
  • Heating apparatus for internal combustion engine exhaust aftertreatment
  • Heating apparatus for internal combustion engine exhaust aftertreatment

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Embodiment Construction

[0019]The invention will be described in conjunction with the appended figures. FIG. 1 is a schematic showing the apparatus 40 according to the invention, the components within the dotted line box, with an internal combustion engine 10 and exhaust gas aftertreatment systems 30, 32, and 34.

[0020]The engine 10 includes an intake manifold 12 for combustion air, and an exhaust manifold to discharge exhaust gas 14. The exhaust gas conduit 16 carries exhaust gas to a turbine 18 of a turbocharger. The turbine 18 is driven by the exhaust gas and is connected to drive a compressor 20. The compressor 20 compresses ambient air, which is delivered by a combustion air intake line 22 to the intake manifold 12. Ambient air is first filtered by a filter 24 to remove impurities, such as dust, from the air.

[0021]After exhaust gas exits the turbine 18, it is treated to remove pollutants and impurities by one or more aftertreatment systems. These may include a diesel oxidation catalyst 30, a particulat...

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Abstract

A heating apparatus for engine exhaust includes a housing having an inlet for connection in an exhaust gas conduit to receive exhaust gas and an outlet for connection in an exhaust gas conduit to discharge exhaust gas, the housing defining an interior space, a burner unit mounted in the housing for combustion of a fuel in the interior space, and, a turbocompressor, including a turbine having an inlet to receive exhaust gas to drive the turbine and an outlet connected to the housing to discharge exhaust gas and a compressor driven by the turbine and having an inlet to receive ambient air and an outlet connect to deliver compressed air to the burner. The turbocompressor may be mounted on the housing upstream of the burner unit.

Description

FIELD OF THE INVENTION[0001]The invention is directed to an apparatus for heating an exhaust flow from an internal combustion engine to make the exhaust temperature suitable for use by exhaust aftertreatment systems, for example, for regeneration of a diesel particulate filter, heating a diesel oxidation catalyst body, and / or heating a selective catalytic reduction catalyst body.BACKGROUND AND SUMMARY OF THE INVENTION[0002]Exhaust aftertreatment systems are used to remove certain substances from a combustion exhaust flow, as in the example of a particulate filter, and to convert some combustion products to other substances, as in selective catalytic conversion of oxides of nitrogen (NOx) into nitrogen gas and water.[0003]For example, diesel particulate filters are used for removing particulate matter (typically the product of incomplete combustion) from the exhaust stream before releasing it to the environment. The collected particulate matter eventually loads the filter and must be...

Claims

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Application Information

Patent Timeline
23 May 2013
Publication
US20130125543A1
IPC
F01N3/025
CPC
F02B37/004; F02B37/18; F02B37/20; Y02T10/26; F01N3/025; F01N3/2033; F01N2240/14; Y02T10/144
Inventors
HOOVER, DALE H.