KR200420536Y1 - Internal combustion engine exhaust gas purification device using electromagnet - Google Patents

Abstract

The present invention relates to an internal combustion engine exhaust gas purification apparatus using an electromagnet, and a purification unit including a permanent magnet and a wire wound thereon is installed on an external surface of an engine exhaust pipe or on the main catalyst means itself, or an internal exhaust pipe or main catalyst means according to power supply. By controlling the collection and release of oxygen gas in the exhaust gas from the inner surface, it is possible to promote the oxidation and reduction reaction of the exhaust gas in the main catalyst means, thereby improving the NOx reduction reaction in the diesel engine using conventional diesel fuel. It is devised to improve the exhaust gas purification efficiency.

Electromagnet, Exhaust Gas, Purifier

Description

An apparatus with electromagnet for purifying exhaust gas from internal engines}

1 shows an overall system in which an electromagnet purification unit according to the present invention is installed,

2 and 3 is an exploded and combined perspective view of an electromagnet purifying unit according to the present invention.

* Short description of drawing symbols *

1: engine, 3: exhaust pipe,

4; Purification unit, 5: main catalyst means,

6: battery, 7: electronic switch,

10, 20: nonmagnetic case, 70, 80: permanent magnet,

90: lead wire, 16: control unit

The present invention relates to an exhaust gas purifying apparatus using an electromagnet, and more particularly, by applying electric and magnetic forces to an exhaust gas fluid flow by using paramagnetic properties of oxygen and diamagnetic properties of carbon-containing components in an exhaust gas component. An exhaust gas purifying apparatus is provided by a method of controlling the content of a contained component.

Various internal combustion engine exhaust gas aftertreatment techniques and purification apparatuses have been proposed. In particular, significant technological advances have been made on the post-treatment of catalysts, and the three-way catalyst that simultaneously reduces the three emissions of CO, HC, and NOx operates at the theoretical air-fuel ratio for engines using gasoline fuel. have.

However, in the case of diesel engines, especially in the case of an oxidation catalyst (DOC) for lowering the soot ignition temperature to promote combustion by exhaust gas self-heat, the catalyst coated on the filter operates at a high A / F air-fuel ratio. Although advantageous, it has been pointed out that there is a limit to promoting NOx reduction.

Therefore, in the case of diesel engines operating in lean combustion conditions, a three-way catalyst cannot be used. Therefore, de-NOx catalysts (nitrogen oxide reduction catalysts) have been continuously demanded. As alternatives, development of catalyst materials having NOx reducibility and using HC Reduction reactions, NOx traps, SCR system for chemical reaction by injecting ammonia, etc. have been proposed, but they are not easily applied due to their respective disadvantages.

The present invention, as a result of trying to solve the above problems, by applying the electromagnet configuration to the exhaust gas purification device based on the susceptibility of oxygen and carbon-containing materials to improve DOC efficiency in lean burn conditions, internal combustion engine exhaust gas using an electromagnet It is to suggest a purifier.

Accordingly, an object of the present invention is to propose an exhaust gas purification apparatus to which an electromagnet is applied, and to propose an exhaust gas purification apparatus in which the exhaust gas purification efficiency is improved.

Hereinafter, the configuration of the present invention will be described with reference to examples, but is not limited thereto, and the electromagnet configuration may be applied to various changes in the conventional doubling gas purification apparatus, but advantageously, the present invention has an exhaust gas. It can be applied to diesel oxidation catalyst (DOC) systems carrying a catalyst composition for oxidizing oxidative components in the containing stream.

In the exhaust gas purifying apparatus according to the present invention, the exhaust gas contains a large amount of combustion gas containing oxygen gas and carbon containing gas, but the oxygen gas is paramagnetic and the combustion gas containing carbon containing gas uses diamagnetic properties. Therefore, it is possible to temporarily trap or release oxygen gas according to the difference in susceptibility (O ₂ : +3449.0, CO: -21 units: 10 ^-6 cgs), The content can be controlled, and finally, it is advantageous in the NOx reduction reaction.

Purifier according to the present invention will be described in detail with reference to FIGS.

The apparatus shown in FIG. 1 shows the whole system for purifying the exhaust gas of the engine 1 which can use diesel oil provided with the electromagnet purification unit by this invention. Figure 2 is an exploded perspective view of the electromagnet purification unit according to the present invention, Figure 3 is a combined perspective view of FIG.

The engine 1 is provided with a suction pipe 2 and an exhaust pipe 3, and exhaust gas from the engine 1 is electrically operated by an electromagnet purification unit 4 and a main catalyst means 5 such as DOC connected thereto. You are guided. The main catalyst means can be understood as a conventional DOC catalytic converter composed of a cylindrical ceramic substrate. The electromagnet purification unit 4 may be mounted upstream of the main catalyst means, but is not limited thereto and may be attached to the outer circumferential surface of the DOC catalytic converter, and the DOC catalytic converter itself may be configured as a purification unit. For example, the purifying unit 4 described in detail below may be formed in the main catalyst means body, in which case the main catalyst means consists of a metal carrier to serve as an electromagnet purifying unit in which the carrier itself has a permanent magnet. Of course it can.

The electromagnet purifying unit 4 has permanent magnets 70 and 80 wound around the outer circumferential surfaces of the case 10 and 20 of the non-magnetic material, respectively, which are separately formed, so that power can be applied to the conductive wire 90. At this time, the magnetic flux density of the fixed permanent magnets 70 and 80 may be a gaussian in the range of 2,200 to 3,000, which may affect the degree of capturing paramagnetic gas in the exhaust gas. Meanwhile, the electromagnet purification unit 4 fixes a plurality of permanent magnets at equal intervals at one end of the case 10 and 20, and fixes the same number of permanent magnets wound around the outer circumferential surface at equal intervals at the other end. Modified forms are also possible.

The electromagnet purification unit may be installed to be fixed to the main catalyst means (5) upstream exhaust pipe (3) by a band or a clamp, but is not limited thereto, and may be mounted to surround the outer circumferential surface of the main catalyst means (5). Purification unit lead 90 is connected to a current source for power application.

The purifying unit is usually connected to a battery 6 which functions as an automobile starting battery, but in some cases, if it is insufficient to meet the current demand, a separate electric energy supply device (electric generator) in addition to the ordinary vehicle starting battery may be required. .

In order to connect the purifying unit 4 according to the present invention to a current source, an electronic switch 7 is interposed between the unit 4 and the storage battery 6. The electronic switch is a semiconductor type switch for minimizing losses and reliably connecting a current to the purification unit without the risk of generating an electromagnetic pulse, which is a phenomenon frequently occurring in automobiles. On the other hand, the electronic switch 7 may be a relay type.

Upstream of the purification unit 4 a sensor known as a lambda sensor 8 is located for detecting the oxygen content in the exhaust gas. The lambda sensor is connected to an electronic unit 9 for sending signals from the lambda sensor to the correction unit 101. The correction unit 101 is arranged to determine a signal associated with the air / fuel mixture and to send this signal to the injection unit 11 of the engine 1. The injection unit is a unit of the type normally applied to the position where the air mass meter 12 is connected to the engine.

In the whole system in which the purification unit according to the present invention is installed, a control method 16 of a computer type, which is connected to the electronic switch 7 and designed to transmit a control signal, is included. The control unit functions to regulate the operation of the purifying unit 4 based on time (period), to monitor the purifying unit 4, and to supply current from the storage battery 6 or the generator to the purifying unit 4. Perform the function of monitoring what you do.

Hereinafter, the exhaust gas purification function according to the present invention will be described. When the engine 1 is operated, by the current supply monitoring activity, a check is made on the capacity of the battery 6 to supply sufficient current to the purifying unit 4. If the energy content of the battery 6 is sufficient and the state of the purge unit is monitored as normal, the operation for loading power to the purge unit 4 is started. The power supply to the purification unit is continued for a predetermined period of time. When power is supplied to the purifying unit, the purifying unit is electromagnetized, and radiates electromagnetic force at right angles to the fluid flow direction in the exhaust pipe 3 so that oxygen gas is collected on the inner surface of the exhaust pipe on which the electromagnetized purifying unit 4 is installed. Therefore, as the oxygen content in the exhaust stream is lowered, the NOx reduction reaction can be improved.

According to a preferred embodiment, the power supply cycle to the purification unit 4 is signaled by the intake air quantity sensor (not shown) in front of the lambda sensor 8 and the injection unit to determine the current fuel supply amount according to the theoretical performance ratio. It is interlocked with an electronic unit (ECU) 9 signal that gives a supply signal to the injection unit 11. That is, it can be controlled to capture the oxygen gas through the application of the purification unit power supply in the high air-fuel ratio range. On the other hand, when the power supply to the purification unit is stopped, the oxygen gas collected on the inner surface of the exhaust pipe where the purification unit is installed so that the HC and CO oxidation reactions are activated can flow with the stream, and according to the purification unit control according to the present invention The oxidation reaction and the reduction reaction of the exhaust gas in the catalyst means 5 can be easily controlled.

The present invention relates to an internal combustion engine exhaust gas purifying apparatus using an electromagnet, and a purifying unit including a permanent magnet and a wire wound thereon is installed on the outer surface of the engine exhaust pipe to collect oxygen gas in the exhaust gas from the inner surface of the exhaust pipe according to power application. By controlling the discharge, the main catalyst means promotes the oxidation and reduction of the exhaust gas, thereby improving the NOx reduction reaction in diesel engines using conventional diesel fuel as the fuel, and ultimately improving the exhaust gas purification efficiency. It is a design that can be done.

Claims (4)

An internal combustion engine exhaust gas purifying apparatus including a main catalyst means (5) connected to an exhaust pipe (3) at the rear end of an engine (1), characterized in that an electromagnet purification unit (4) is mounted upstream of the main catalyst means (5). The internal combustion engine exhaust gas purification device using an electromagnet. The electromagnet purification unit (4) according to claim 1, wherein the permanent magnets (70, 80) in which the conductor (90) is wound around the outer circumferential surface of each of the case (10, 20) of the non-magnetic material formed separately are fixed. An internal combustion engine exhaust gas purification device using an electromagnet. The electromagnet purification unit (4) according to claim 1, wherein a plurality of permanent magnets are fixed at equal intervals on one end of the case (10, 20), and the same number of permanent magnets wound around the outer circumferential surface at the other end similarly. An internal combustion engine exhaust gas purification apparatus using an electromagnet, characterized in that fixed at equal intervals. 2. An exhaust gas purification apparatus for an internal combustion engine using an electromagnet according to claim 1, wherein said electromagnet purification unit is fixed to said main catalyst means (5) upstream with an exhaust pipe (3) by a band or a clamp.

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