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Exhaust gas diffuser

a technology of exhaust gas diffusion and exhaust gas, which is applied in the direction of engines, mechanical equipment, machines/engines, etc., can solve the problems of undesirable high temperature in the operating environment of vehicles, and the frequency of exhaust gas conveyance systems on vehicles that emit exhaust gas with extremely high temperatures

Inactive Publication Date: 2008-11-20
INT TRUCK INTPROP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Exhaust gas conveyance systems on vehicles frequently emit exhaust gases with extremely high temperatures.
During both routine operation and regeneration events, the vehicle's operating environment can be subjected to undesirable high temperatures.

Method used

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Examples

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Embodiment Construction

[0011]Referring now to FIGS. 1-3, an exhaust gas-cooling device is depicted generally at 10, and includes an exhaust gas conveyance system or tailpipe 12 and a diffuser 14. The exhaust gas conveyance system 12 is mounted on a vehicle (not shown) forming an exhaust gas passageway 16 which routes the exhaust gases from the vehicle's engine (not shown) to a remote location where the gases can be expelled into the ambient.

[0012]In the direction of flow of the exhaust gases, the exhaust gas conveyance system 12 can incorporate aftertreatment devices (not shown), such as an oxidation catalyst member (not shown) and a particulate filter (not shown). The oxidation catalyst member oxidizes unburned fuel and oil to reduce harmful emissions, and the particulate filter removes particulate matter from the exhaust gases. When particulate matter gets trapped in the particulate filter, a periodic or continuous regeneration event oxidizes the collected particulate matter. The regeneration event typi...

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PUM

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Abstract

An exhaust gas-cooling device for use on an exhaust gas conveyance system of a vehicle to emit exhaust gases from an engine to an outlet includes a pipe defining an exhaust gas passageway that is in fluid communication with the engine, and a diffuser in fluid communication with the exhaust gas passageway. The diffuser is configured for receiving the pipe, and has a body defining an outlet of the exhaust gas passageway to the ambient, and a diffusing structure disposed on the body generally opposite the outlet. The diffusing structure has a separating structure configured for receiving and diverting the flow of exhaust gas emitted from the pipe, and a guiding structure configured for guiding the diverted flow of exhaust gas along the body to the outlet.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates generally to exhaust gas conveyance systems in vehicles. More specifically, the present invention relates to an exhaust gas-cooling device for reducing the temperature of exhaust gases emitted from a vehicle's engine.[0002]Exhaust gas conveyance systems on vehicles frequently emit exhaust gases with extremely high temperatures. The high temperatures can be achieved from routine engine operation, particularly on larger vehicles. Further, the high temperatures can also be achieved during a regeneration event, where collected particulate matter that is trapped in a particulate filter is oxidized. During both routine operation and regeneration events, the vehicle's operating environment can be subjected to undesirable high temperatures.[0003]Thus, there is a need for an exhaust gas-cooling device that can be easily provided on most exhaust gas conveyance systems with little modification to the existing exhaust gas conveyance...

Claims

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Application Information

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IPC IPC(8): F01N3/02
CPCF01N13/082F01N2240/20F01N2470/18F01N2490/16
Inventor SCHMALE, MARK A.DEW, DANIEL C.QUINN, DAVID C.BYERS, ROGER W.SCHOON, RONALD E.KOONTZ, BRENT
Owner INT TRUCK INTPROP LLC