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Internal combustion engines and exhaust aftertreatment systems

A technology for internal combustion engines, exhaust gas treatment, applied in the direction of internal combustion piston engines, combustion engines, engine components, etc.

Active Publication Date: 2017-04-19
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A challenge with this configuration is the need to select reasonable lengths between components, and to place sufficient mixing devices in the exhaust duct to achieve adequate mixing of the injected fluids (e.g. HC and urea (ammonia) reductant)

Method used

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  • Internal combustion engines and exhaust aftertreatment systems
  • Internal combustion engines and exhaust aftertreatment systems
  • Internal combustion engines and exhaust aftertreatment systems

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Embodiment Construction

[0059] The following description is merely exemplary in nature and is not intended to limit the invention, its application or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. In the figures, the exhaust flow arrows are used to show the general direction of flow, and the details of the flow do not necessarily have to be shown in a particular exhaust treatment device of the exhaust treatment system.

[0060] refer to figure 1 , shows an internal combustion ("IC") engine. It should be noted that the invention disclosed herein is applicable to any type of internal combustion engine that requires an exhaust gas fluid or gas). In the following description, a diesel engine 10 and associated exhaust treatment system 12 are described. The diesel engine includes a cylinder block 14 and a cylinder head 16 which, when combined, define piston cylinders and combustion chambers (not shown). A ...

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Abstract

The present invention relates to internal combustion engines and exhaust aftertreatment systems. The internal combustion engine has an exhaust treatment system with a fluid injection system and a swirl can booster mixer for mixing the injected fluid with exhaust gas from the engine exhaust. The mixer includes a tank with an internal plenum. The bulkhead separates the internal plenum into an exhaust collector and diffuser chamber. A flow port opens through the bulkhead to a tangential flow director, which is arranged on the downstream side of the bulkhead to collect the exhaust gas. The fluid injector port receives a fluid injector to dispense fluid into the exhaust for mixing with the exhaust in the swirl can booster mixer. The tangential flow director nozzles are configured to distribute the exhaust gas and fluid into the downstream plenum of the tangential flow trajectory where mixing and vaporization of the mixture of the exhaust gas and fluid with the exhaust gas is accomplished.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 61 / 817068, filed April 29, 2013, which is hereby incorporated by reference in its entirety. technical field [0003] Embodiments of the present invention relate to exhaust gas treatment systems for internal combustion engines, and more particularly, to exhaust gas treatment systems capable of fully mixing and evaporative injection into the exhaust stream over short physical lengths. Background technique [0004] Exhaust gases emitted from an internal combustion engine to an exhaust treatment system are gaseous emissions including, for example, carbon monoxide ("CO"), unburned hydrocarbons ("HC") and nitrogen oxides ("NOx") as well as condensed matter including particulate matter. A heterogeneous mixture of phase substances (liquid and solid). Catalyst components, typically disposed on catalyst supports or substrates, are provided in various exhaust system d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/28
CPCF01N3/106F01N3/2066F01N3/2892F01N13/08F01N13/009Y02T10/12B01F23/2132B01F25/10B01F25/3141
Inventor C·E·索布里格O·N·亚纳基伊夫M·K·科里甘
Owner GM GLOBAL TECH OPERATIONS LLC