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Diverter for catalytic converter

A technology of catalytic converters and splitters, applied in chemical instruments and methods, separation methods, separation of dispersed particles, etc., can solve problems such as exhaust gas distribution, low cost, etc.

Inactive Publication Date: 2008-02-13
KLEENAIR SYST INT PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A number of different splitter designs have been proposed, but they are generally above the lowest cost and not effective in distributing the exhaust gas evenly across the cross-section of the catalyst

Method used

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  • Diverter for catalytic converter
  • Diverter for catalytic converter

Examples

Experimental program
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Embodiment Construction

[0009] FIG. 1 shows an exhaust duct assembly 12 of an engine 10 that communicates an exhaust manifold 14 to atmosphere via a muffler 16 . Along the exhaust tract assembly is disposed a catalytic converter assembly 20 to reduce pollutants in the final exhaust gas emitted to the atmosphere. The duct assembly includes an upstream duct section 22 , which has a small diameter of, for example, 2 inches (5.1 centimeters) and is unobstructed, and conveys the exhaust gas to the converter assembly 20 . The converter assembly includes a catalytic converter 30 including a generally cylindrical catalytic converter retaining line portion 32 having a diameter substantially larger than the upstream line portion 22 . As shown in Figure 2, the converter holding line section 32 houses a converter material 34 having a number of small pores. The converter material 34 is typically about 2-3 times the diameter of the upstream piping portion 42 to provide about 4-9 times the cross-sectional area. T...

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Abstract

A diverter is provided in the present invention, which is of low cost and which is effective in more evenly distributing exhaust gasses passing from a small diameter upstream exhaust gas pipe section (42) into a much larger diameter catalytic converter assembly (20). The diverter includes a diverter element (70) and mounting brackets (72). The diverter element has a central hole (82) and has conical walls with an included angle (G) of at least 70 DEG, the conical walls having a plurality of holes (90). The large conical angle (G) of the diverter effectively directs exhaust gases to the periphery of the large diameter catalytic converter but blocks a radially intermediate portion of the catalyst, while the holes in the conical diverter walls allow sufficient exhaust gases to reach the radially intermediate portion of the catalyst.

Description

Background technique [0001] Vehicle exhaust systems typically include a small diameter exhaust line section that extends from the exhaust manifold to a larger diameter catalytic converter, and a conical transition line section connects the downstream end of the small diameter line to the catalytic converter. upstream end. In order to better distribute the exhaust gases over the large-diameter catalytic converter, flow dividers can be placed in the conical transition line section. A number of different splitter designs have been proposed, but they are generally above the lowest cost and are not effective in distributing the exhaust gas evenly across the cross-section of the catalyst. A low cost splitter that evenly distributes the exhaust gas from the small diameter upstream line section into the larger diameter catalytic converter is valuable. Contents of the invention [0002] According to one embodiment of the present invention, an engine and a flow divider for the engin...

Claims

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Application Information

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IPC IPC(8): F01N7/00F01N3/10F01N3/08F01N3/02B01D50/00B01D53/34F01N3/28
CPCF01N3/2892
Inventor 莱斯特·P·贝里曼约翰·M·扎布斯基
Owner KLEENAIR SYST INT PLC