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Microwave regeneration control system and method for reducing its reflective wave and its operation

A microwave system and microwave source technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve problems such as obstructing exhaust gas flow and increasing DPF pressure

Inactive Publication Date: 2010-10-06
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As buildup increases, it can impede exhaust flow and increase pressure inside the DPF

Method used

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  • Microwave regeneration control system and method for reducing its reflective wave and its operation
  • Microwave regeneration control system and method for reducing its reflective wave and its operation
  • Microwave regeneration control system and method for reducing its reflective wave and its operation

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Embodiment Construction

[0017] The following description of the preferred embodiments serves only as an explanation in nature and in no way serves to limit the invention, its application or uses. For the sake of clarity, the same reference numerals have been used to indicate the same parts in the drawings. The term "module" as used herein means an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or grouped) and memory, combinational logic for executing one or more software or firmware programs circuits and / or other suitable components that provide the desired function.

[0018] now refer to figure 1 , schematically shows a diesel engine system 10 . Diesel engine system 10 includes diesel engine 12 , exhaust system 14 and microwave system 16 . Diesel engine 12 includes cylinders 18 and intake manifold 20 . Air enters the engine 12 through an intake manifold 20 . Air is charged into cylinder 18 and combusted with fuel to drive pistons (not show...

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PUM

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Abstract

The invention provides a microwave reproducing control system used in the diesel particulate filter, and can produce microwave source of microwave signals for the diesel particulate filter (DPF). The microwave system includes a sampling device which can sample from the power level of the microwave singles reflected by the DPF, a regulator module which can communicate with the microwave source andthe sampling device. The regulator module can regulate the operation of the microwave source according to the comparison result of the power level of the reflected microwave singles with the preset power critical valve.

Description

technical field [0001] The invention relates to a vehicle exhaust system, in particular to the control operation of a microwave regeneration system of a diesel particulate filter. Background technique [0002] Diesel engine operation includes a combustion process that produces exhaust gases. During combustion, an air / fuel mixture is delivered through an intake valve to a cylinder where it burns. After combustion, the piston forces the exhaust gas from the cylinder into the exhaust system. Exhaust gases may contain diesel particulates, commonly known as soot. [0003] A Diesel Particulate Filter (DPF) can be used to reduce soot levels in the exhaust. DPFs typically include a separation medium and an inner cavity with small pores to trap soot. Exhaust gas flows through the pores and soot builds up on the walls. As the buildup increases, it can impede exhaust gas flow and increase the pressure inside the DPF. The DPF is regenerated using microwave radiation to burn off th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/028
Inventor W·S·威廉森E·V·贡泽
Owner GM GLOBAL TECH OPERATIONS LLC