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Exhaust gas mixer and exhaust system including the same

A mixer and exhaust gas technology, applied in fluid mixers, mixers, exhaust devices, etc., can solve the problem of expensive DEF

Inactive Publication Date: 2019-10-18
ACAT GLOBAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] DEF is expensive and the use of DEF requires the operator of a heavy diesel vehicle to fill the drop tank on the vehicle with DEF to be used during the operation of the engine

Method used

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  • Exhaust gas mixer and exhaust system including the same
  • Exhaust gas mixer and exhaust system including the same
  • Exhaust gas mixer and exhaust system including the same

Examples

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Embodiment Construction

[0013] Turning now to the drawings, wherein like reference numerals refer to like structures, figure 1 is a schematic illustration of an internal combustion engine 10, which may be a compression-ignition engine, having an electronic control unit (ECU) 12 having a memory 13 included therein for operating the engine in a manner understood by those of ordinary skill in the art. Run instruction 15. ECU memory can be RAM, ROM, PROM, EPROM, EEPROM, FLASH or any other memory. Accompanying these operating instructions included in the ECU memory are exhaust system instructions that operate various aspects of the exhaust system 14 in response to sensed exhaust conditions. Exhaust system directives may include tables that store NO x emission levels as well as NO x The amount / timing of DEF to be injected into the exhaust stream commensurate with the level, or the exhaust system command may include a diagram showing the NO x Level and associated DEF injection volume / timing. In this re...

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PUM

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Abstract

An exhaust gas mixer for imparting swirl and turbulence in an exhaust gas flow of an internal combustion engine and an exhaust system comprising such an exhaust gas mixer are disclosed.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 064,258, filed October 15, 2014, the entire contents of which are incorporated herein by reference. Background technique [0003] During the operation of compression-ignition internal combustion engines, the emission control of exhaust gases (exhaust gases) is a constant concern. In terms of fuel savings and exhaust emissions (ie, NO x , hydrocarbons, particulates and soot) there is a constant trade-off. Recent air quality regulations have become even stricter to reduce these emissions. For this reason in part, vehicle and engine manufacturers have created or required exhaust systems that include selective catalytic reductants (SCRs) as well as diesel particulate filters (DPFs). [0004] In operation, the engine exhaust stream flows through an engine exhaust duct equipped with at least one sensor for detecting emission levels such as, for exa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/10
CPCF01N3/2066F01N3/208F01N3/021F01N2560/026F01N2610/02F01N2610/1453F01N2900/1402F01N3/2892Y02T10/12B01F25/4322
Inventor 埃里克·富尔彻
Owner ACAT GLOBAL