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Reagent injector

A technology of injectors and reagents, applied in the direction of fuel injection devices, machines/engines, chemical instruments and methods, which can solve problems such as damage, unwanted deposits in exhaust systems, injector failures, etc.

Active Publication Date: 2021-03-16
TENNECO AUTOMOTIVE OPERATING CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The injector may then have to be repaired or replaced, resulting in downtime and increased costs
Reagent freezing can also lead to injector failure, which can lead to unwanted deposits in the exhaust system
Similarly, any other fluid delivery component may be damaged due to fluid freezing

Method used

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  • Reagent injector
  • Reagent injector
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Examples

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Embodiment Construction

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings.

[0032] It should be understood that while the present teachings may be described in connection with a diesel engine and reduction of nitrogen oxide (NOx) emissions, multiple exhaust streams such as from (by way of non-limiting example) gasoline, turbine , a fuel cell, a jet aircraft, or any other power source that outputs an exhaust stream) using this teaching. Furthermore, the present teachings may be used in reducing any of a variety of undesired emissions.

[0033] Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. figure 1 An exemplary exhaust system 100 for an engine 102 is shown. exist figure 1 In , solid lines between elements of exhaust system 100 represent fluid lines, while dashed lines represent electrical connections. The engine 102 may be in communication with a fuel source that, once c...

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PUM

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Abstract

An injector (110, 400, 600, 800, 900) for injecting a reagent includes a first injector body (202, 402) defining a first end (805) and a second end (807). The first injector body (202, 402) further includes an outlet opening (228, 428) disposed proximal to the second end (807). The injector (110, 400, 600, 800, 900) further includes a valve assembly (216, 412) at least partly enclosed by the firstinjector body (202, 402). The valve assembly (216, 412) is configured to selectively dispense the reagent through the outlet opening (228, 428) of the first injector body (202, 402). The injector (110, 400, 600, 800, 900) further includes a cover member (801) coupled to the first injector body (202, 402) and adapted to at least partially cover the second end (807) of the first injector body (202,402). The cover member (801) includes an integral flange portion (803) for mounting the injector (110, 400, 600, 800, 900) on a component.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Patent Application No. 16 / 044,980, filed July 25, 2018, which is incorporated herein by reference in its entirety. technical field [0003] The present disclosure relates to injectors, and more particularly to an injector for injecting a reagent into an exhaust flow of an engine. Background technique [0004] Lean burn engines provide improved fuel efficiency by operating with excess oxygen, ie, an amount of oxygen greater than that required for complete combustion of the available fuel. Such engines are said to run "lean" or "lean". However, this improvement or increase in fuel economy compared to non-lean burn is offset by undesired polluting emissions, particularly in the form of nitrogen oxides (NOx). [0005] One method for reducing NOx emissions from lean-burn internal combustion engines is known as selective catalytic reduction (SCR). SCR (e.g. when used to reduce NOx ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20F02M53/04
CPCF01N3/2066F01N2610/1453F01N2610/1486F02M51/0675F02M53/043F01N2610/11F01N2610/02F01N3/208B01D53/9418F01N2610/1433F01N2610/1413F01N2610/146
Inventor 阿比吉特·P·乌帕迪耶艾伦·布罗克曼
Owner TENNECO AUTOMOTIVE OPERATING CO INC