KR20200031954A - engine system - Google Patents

engine system Download PDF

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Publication number
KR20200031954A
KR20200031954A KR1020180111118A KR20180111118A KR20200031954A KR 20200031954 A KR20200031954 A KR 20200031954A KR 1020180111118 A KR1020180111118 A KR 1020180111118A KR 20180111118 A KR20180111118 A KR 20180111118A KR 20200031954 A KR20200031954 A KR 20200031954A
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KR
South Korea
Prior art keywords
scr reactor
compressed air
engine
turbocharger
compressor
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KR1020180111118A
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Korean (ko)
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KR102150160B1 (en
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이인호
강정훈
김현재
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현대중공업 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • F01N3/326—Engine-driven air pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/06—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of the exhaust apparatus relative to the turbine of a turbocharger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The present invention provides an engine system capable of omitting or reducing the need for an air compressor for an SCR reactor as an SCR reactor receives compressed air supplied to an engine and uses the compressed air to vent a chamber of the SCR reactor. According to an embodiment of the present invention, the engine system includes: a turbocharger generating the compressed air to operate the engine; the SCR reactor sealed or vented by receiving the compressed air generated in the turbocharger to auxiliary use or not to use the compressed air generated in the air compressor for an SCR reactor or a service air compressor; and a supply line transferring the compressed air generated from the turbocharger to the SCR reactor by connecting the turbocharger and the SCR reactor.

Description

엔진 시스템{engine system}Engine system

본 발명은 엔진 시스템에 관한 것이다.The present invention relates to an engine system.

엔진은 연소실에 유입된 공기를 고온 고압으로 압축하고 보다 큰 압력의 연료를 분사 및 미립화시켜 점화시킨 후 배기가스를 방출한다. 이때, 엔진은 연료의 효율을 상승시키기 위하여, 공기를 미리 압축하여 연소실에 공급한다. 이를 위해, 엔진에서 배출되는 배기가스 압력을 이용해 공기를 압축해 주입하는 터보차저(Turbo Charger)가 엔진에 연결된다. The engine compresses the air entering the combustion chamber at high temperature and high pressure, injects and atomizes the fuel at a higher pressure, ignites it, and then emits exhaust gas. At this time, in order to increase the efficiency of the fuel, the engine compresses air in advance and supplies it to the combustion chamber. To this end, a turbo charger, which compresses and injects air using the exhaust gas pressure discharged from the engine, is connected to the engine.

여기서, 엔진은 엔진회전수에 따라서 공기가 항상 과잉 공급되므로 유해물질인 질소산화물이 다량으로 배출되는데, 환경문제에 대한 규제에 의해, 유해물질을 제거할 필요가 있다. 이를 위해, 엔진의 배기라인에 SCR 반응기를 설치하게 된다. Here, since the engine is always supplied with excess air depending on the engine speed, nitrogen oxides, which are harmful substances, are discharged in a large amount. Due to environmental regulations, it is necessary to remove the harmful substances. To this end, an SCR reactor is installed in the exhaust line of the engine.

예를 들어 SCR 반응기는, 엔진의 배기라인에 연결되고, 촉매를 포함하며, SCR 반응기의 촉매는 내구성이 강한 벌집(Honeycomb)형 코디에라이트(Cordierite) 등의 기질에 결합되어 반응탑에 여러 단으로 적재된다.For example, the SCR reactor is connected to the exhaust line of the engine, and includes a catalyst. The catalyst of the SCR reactor is coupled to a substrate such as a honeycomb-type cordierite, which is durable, and has multiple stages in the reaction tower. Is loaded with.

이러한 SCR 반응기는, 암모니아 등을 환원제로 이용하며, 고온으로 가열된 촉매에 환원제를 분사하여 질소산화물만을 선택적으로 환원시켜 질소가스로 바꿈으로써 유해물질을 저감시킨다.In the SCR reactor, ammonia or the like is used as a reducing agent, and the reducing agent is selectively reduced by spraying a reducing agent to a catalyst heated to a high temperature to be converted into nitrogen gas to reduce harmful substances.

한편 SCR 반응기는, 항상 구동이 되는 것은 아니며, 사용을 하지 않는 구간에서는 씰링 작업 즉, SCR 반응기의 내부를 압축 공기(compressed air)로 채워야 SCR 반응기의 내부가 산성이 되는 것을 방지할 수 있다. On the other hand, the SCR reactor is not always driven, and in the unused section, the sealing operation, that is, the inside of the SCR reactor must be filled with compressed air to prevent the inside of the SCR reactor from becoming acidic.

그리고 씰링 작업이전에는, SCR 반응기의 내부에 질소산화물 등이 남아 있지 않도록 3회 이상으로 압축공기를 유입 및 벤팅시키는 작업이 요구된다. 이와 같이 SCR 반응기는, 압축 공기를 공급받아야 하므로 별도로 SCR air compressor 와 SCR air dryer가 마련된다. In addition, prior to the sealing operation, the operation of introducing and venting compressed air three or more times is required to prevent nitrogen oxides and the like from remaining inside the SCR reactor. As described above, since the SCR reactor needs to receive compressed air, an SCR air compressor and an SCR air dryer are separately provided.

그런데 SCR air compressor 및 SCR air dryer는 선박의 운항 상태(condition)를 고려하여, 각 상태 중에서 가장 소모량이 큰 상태를 기준으로 용량이 결정되고, 통상적으로 이 용량은 SCR 반응기를 작동시키다 정지시키는 시점에서 사용되는 SCR chamber venting을 위한 압축 공기 소모량이 된다.However, the SCR air compressor and the SCR air dryer take into account the ship's operating condition, and the capacity is determined based on the state of the highest consumption among each state, and this capacity is usually at the time of operating and stopping the SCR reactor. It becomes the compressed air consumption for the SCR chamber venting used.

그러나 SCR 반응기의 챔버(chamber) 벤팅(venting)을 위한 압축공기 소모량은 SCR 반응기를 작동시키다 정지시키는 한시적인 시점에서 약 1시간 동안 SCR 반응기의 챔버의 부피(volume) 용적의 3배에 해당되는 압축공기를 사용하는 상태를 기준으로 하게 되며, 작동 상태(operation condition) 및 씰링 상태(SCR chamber sealing condition)에 비하여 비율이 매우 작다. However, the amount of compressed air consumed for venting the chamber of the SCR reactor is three times the volume of the volume of the chamber of the SCR reactor for about 1 hour at a time when the SCR reactor is operated and stopped. It is based on the condition of using air, and the ratio is very small compared to the operation condition and the sealing condition (SCR chamber sealing condition).

따라서 SCR 반응기 챔버의 벤팅을 위한 압축 공기 소비에 SCR air compressor 및 SCR air dryer용량을 맞추어 20% 이상 큰 장비를 설치하게 되어, 시스템이 비효율적이다.Therefore, the equipment is inefficient because the equipment of SCR air compressor and SCR air dryer is installed to fit the compressed air consumption for venting of the SCR reactor chamber, and more than 20% of the equipment is installed.

또한, SCR 반응기의 챔버의 부피가 압축공기 소비에 직접적인 영향을 미치므로, 3.5% sulphur contents F.O 에 대한 HP SCR적용 등 SCR 반응기 챔버의 부피가 증가하는 경우에 따라서 SCR air compressor 및 SCR air dryer 용량이 증가하게 되는 바와 같이, 시스템의 효율화를 위한 개선이 요구된다.In addition, since the volume of the chamber of the SCR reactor directly affects the consumption of compressed air, the capacity of the SCR air compressor and SCR air dryer is increased when the volume of the SCR reactor chamber increases, such as the application of HP SCR to 3.5% sulphur contents FO. As it increases, there is a need for improvements to streamline the system.

본 발명은 종래기술을 개선하고자 창출된 것으로서, 본 발명의 목적은 SCR 반응기가 엔진에 공급되는 압축공기를 공급받아 SCR 반응기 챔버 벤팅에 사용함으로써, SCR 반응기용 에어 컴프레서를 생략하거나 축소할 수 있는 엔진 시스템을 제공하기 위한 것이다.The present invention was created to improve the prior art, and an object of the present invention is to use an SCR reactor to receive compressed air supplied to the engine and use it for the SCR reactor chamber venting, thereby reducing or reducing the air compressor for the SCR reactor. It is intended to provide a system.

본 발명의 일 실시예에 따른 엔진 시스템은, 엔진 구동을 위해 압축공기를 발생시키는 터보차저; SCR 반응기용 에어 컴프레서 또는 서비스 에어 컴프레서에서 발생되는 압축공기를 사용하지 않거나 보조적으로 사용하기 위해, 상기 터보차저에서 발생되는 압축공기를 공급받아 씰링되거나 벤팅을 이루는 SCR 반응기; 및 상기 터보차저와 상기 SCR 반응기를 연통시켜, 상기 터보차저로부터 발생되는 압축공기를 상기 SCR 반응기로 경유시키는 공급라인을 포함하는 것을 특징으로 한다.An engine system according to an embodiment of the present invention, a turbocharger for generating compressed air for driving the engine; In order to not use or supplementally use compressed air generated from an air compressor for an SCR reactor or a service air compressor, an SCR reactor that is sealed or vented by receiving compressed air generated from the turbocharger; And a supply line communicating the turbocharger and the SCR reactor to pass compressed air generated from the turbocharger to the SCR reactor.

구체적으로, 상기 공급라인 상에 마련되고, 상기 엔진의 로드가 설정 로드 이하로 구동되는 경우, 상기 터보차저로부터 발생되는 압축공기가 상기 SCR 반응기로 공급되는 것을 차단하고, 상기 서비스 에어 컴프레서로부터 상기 SCR 반응기로 압축공기가 공급되도록 조절하는 밸브를 더 포함할 수 있다.Specifically, when provided on the supply line, when the load of the engine is driven below the set load, the compressed air generated from the turbocharger is blocked from being supplied to the SCR reactor, the SCR from the service air compressor It may further include a valve for adjusting the compressed air to be supplied to the reactor.

구체적으로, 상기 서비스 에어 컴프레서는, 선박에 서비스로 공급되는 압축공기를 발생시킬 수 있다.Specifically, the service air compressor may generate compressed air supplied as a service to the ship.

구체적으로, 상기 공급라인은, 상기 터보차저의 압축기로부터 공기가 유입되도록, 상기 엔진의 흡기라인 상에서 상기 압축기의 하류에서 분기되어 상기 SCR 반응기로 연결되는 것을 특징으로 하는 엔진 시스템.Specifically, the supply line, the engine system, characterized in that branched from the downstream of the compressor on the intake line of the engine to be connected to the SCR reactor so that air flows from the compressor of the turbocharger.

본 발명에 따른 엔진 시스템은, SCR 반응기가 엔진에 공급되는 압축공기를 공급받아 SCR 반응기 챔버의 벤팅/씰링에 적용되어, SCR 반응기용 에어 컴프레서를 생략하거나 축소할 수 있어, 시스템이 간소화 및 효율화될 수 있다.The engine system according to the present invention, the SCR reactor is supplied to the compressed air supplied to the engine is applied to the venting / sealing of the SCR reactor chamber, it is possible to omit or reduce the air compressor for the SCR reactor, the system will be simplified and efficient You can.

도 1은 본 발명의 일 실시예에 따른 엔진 시스템을 도시한 도면이다.1 is a view showing an engine system according to an embodiment of the present invention.

본 발명의 목적, 특정한 장점들 및 신규한 특징들은 첨부된 도면들과 연관되어지는 이하의 상세한 설명과 바람직한 실시예로부터 더욱 명백해질 것이다. 본 명세서에서 각 도면의 구성요소들에 참조번호를 부가함에 있어서, 동일한 구성 요소들에 한해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 번호를 가지도록 하고 있음에 유의하여야 한다. 또한, 본 발명을 설명함에 있어서, 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments associated with the accompanying drawings. It should be noted that in this specification, when adding reference numerals to components of each drawing, the same components have the same number as possible, even if they are displayed on different drawings. In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예에 따른 엔진 시스템을 도시한 도면이다.1 is a view showing an engine system according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 일 실시예에 따른 엔진 시스템(100)은, 엔진(110), 터보차저(120), SCR 반응기(130), 공급라인(140), 밸브(142)를 포함한다.Referring to FIG. 1, the engine system 100 according to an embodiment of the present invention includes an engine 110, a turbocharger 120, an SCR reactor 130, a supply line 140, and a valve 142 do.

엔진(110)은, 액화가스의 연소에 의해 구동될 수 있으며, 프로펠러(도시하지 않음)를 구동시켜 선체의 전진 또는 후진을 이루거나, 또는 발전을 위한 엔진일 수도 있는 바와 같이 다양한 변형예 가능하다.The engine 110 may be driven by the combustion of liquefied gas, and various propagation examples may be performed as a propeller (not shown) is driven to form the hull forward or backward, or may be an engine for power generation. .

이러한 엔진(110)은, 연료의 효율 상승을 위하여, 공기를 미리 압축하여 연소실에 공급하는데, 이를 위해 즉 공기를 압축해 주입하는 터보차저(120)가 엔진(110)에 연결될 수 있고, 배기가스를 배출하는 배기라인(111)과 공기가 흡입되는 흡기라인(112)이 마련될 수 있다.The engine 110, in order to increase the efficiency of the fuel, pre-compresses the air and supplies it to the combustion chamber. To this end, the turbocharger 120 for compressing and injecting air may be connected to the engine 110, and exhaust gas An exhaust line 111 for discharging and an intake line 112 through which air is sucked may be provided.

터보차저(120)(Turbo Charger)는, 터빈(121)과 압축기(122)를 포함할 수 있다.The turbo charger 120 may include a turbine 121 and a compressor 122.

먼저 터빈(121)은, 배기라인(111)에 연결되어 엔진(110)으로부터 배기가스를 공급받아 구동되며 회전력을 압축기(122)로 전달하도록 압축기(122)와 축(부호 도시하지 않음)으로 연결될 수 있다. First, the turbine 121 is connected to the exhaust line 111, is driven by receiving exhaust gas from the engine 110, and is connected to the compressor 122 and an axis (not shown) to transmit rotational force to the compressor 122. You can.

이러한 터빈(121)의 구동은, 엔진(110)에서 연소된 배기가스가 유입되어, 배기가스가 가지는 에너지에 의해 터빈(121) 내에 자유롭게 지지된 터빈(121)의 휠(도시하지 않음)이 회전됨으로써 이루어질 수 있다. 이때, 터빈(121)에 내장된 휠의 회전 토크가 축에 의해 압축기(122)의 휠로 전달될 수 있다.The driving of the turbine 121, the exhaust gas combusted in the engine 110 flows in, and the wheel (not shown) of the turbine 121 freely supported in the turbine 121 is rotated by the energy of the exhaust gas. It can be achieved by. At this time, the rotation torque of the wheel built in the turbine 121 may be transmitted to the wheel of the compressor 122 by an axis.

그리고 압축기(122)는, 흡기라인(112)에 연결되어 압축된 공기를 엔진(110)으로 공급할 수 있다. 압축기(122)에는 외부로부터 공기가 유입되는데, 압축기(122)에 내장된 휠(도시하지 않음)의 회전에 의해서 외부에서 유입된 공기가 압축되어 과급공기가 될 수 있다. In addition, the compressor 122 may be connected to the intake line 112 to supply compressed air to the engine 110. Air is introduced into the compressor 122 from the outside, and air introduced from the outside may be compressed to become supercharged air by rotation of a wheel (not shown) built in the compressor 122.

SCR 반응기(130)는, 배기가스가 관통하여 화학 반응되어, 즉 엔진(110)의 배기가스가 정화되는 구성으로서 일반적으로 배기라인(111) 상에 마련될 수 있다.The SCR reactor 130 is chemically reacted through the exhaust gas, that is, the exhaust gas of the engine 110 is purified, and may be generally provided on the exhaust line 111.

다만 본 실시예에서는, SCR 반응기(130)가 배기가스의 정화를 이루기 위해 배기라인(111)과 연결은 이루되, 본 발명의 요지가 흐려지지 않도록 SCR 반응기(130)와 배기라인(111) 연결구조의 도면 및 설명은 생략하도록 한다.However, in this embodiment, the SCR reactor 130 is connected to the exhaust line 111 to achieve purification of exhaust gas, but the SCR reactor 130 and the exhaust line 111 are connected so that the subject matter of the present invention is not blurred. Drawings and descriptions of structures will be omitted.

본 실시예의 SCR 반응기(130)는, SCR 반응기용 에어 컴프레서(도시하지 않음) 또는 서비스 에어 컴프레서(150)에서 발생되는 압축공기를 사용하지 않거나 보조적으로 사용하기 위해, 터보차저(120)에서 발생되는 압축공기를 공급받아 씰링되거나 벤팅을 이룬다.The SCR reactor 130 of this embodiment does not use compressed air generated from the air compressor (not shown) or the service air compressor 150 for the SCR reactor or is used in an auxiliary manner, and is generated in the turbocharger 120 It is sealed or vented by receiving compressed air.

특히 SCR 반응기(130)는, 배기가스 정화를 위한 구동이 아닌 경우, 즉 스탠바이 상태 등과 같이 구동이 정지된 상태에서는 산화 방지 등을 위해 벤팅 작업이 이루어지고, 압축공기로 씰링이 이루어지는데, 터보차저(120)의 압축기(122)로부터 압축공기를 공급받아 벤팅 및 씰링이 이루어져 전체 시스템이 간소화될 수 있다.Particularly, when the SCR reactor 130 is not driven for exhaust gas purification, that is, when the driving is stopped, such as a standby state, a venting operation is performed to prevent oxidation, and sealing is performed with compressed air. The compressed air is supplied from the compressor 122 of the 120, and the entire system can be simplified by venting and sealing.

여기서 SCR 반응기(130)는, 압축기(122)로부터 압축공기를 공급받을 수 있도록, 배기라인(111) 이외에 공급라인(140)과 연결될 수 있다.Here, the SCR reactor 130 may be connected to the supply line 140 in addition to the exhaust line 111 so that compressed air can be supplied from the compressor 122.

공급라인(140)은, 터보차저(120)와 SCR 반응기(130)를 연통시켜, 터보차저(120)로부터 발생되는 압축공기를 SCR 반응기(130)로 경유시킨다.The supply line 140 communicates the turbocharger 120 and the SCR reactor 130 to pass compressed air generated from the turbocharger 120 to the SCR reactor 130.

예를 들어 공급라인(140)은, 터보차저(120)의 압축공기가 SCR 반응기(130)로 공급될 수 있도록, 흡기라인(112) 상에서 압축기(122)의 하류에서 분기되는 구조를 가질 수 있다.For example, the supply line 140 may have a structure branched downstream of the compressor 122 on the intake line 112 so that compressed air of the turbocharger 120 can be supplied to the SCR reactor 130. .

그리고 공급라인(140) 상에서 SCR 반응기(130)의 상류에는, 벤팅-씰링 유닛(141)이 마련되어, 압축공기가 예비 또는 일시적으로 저장될 수도 있어, SCR 반응기(130)로 공급되는 압축공기가 효율적으로 이용될 수도 있다.And, upstream of the SCR reactor 130 on the supply line 140, a venting-sealing unit 141 is provided, and compressed air may be preliminarily or temporarily stored, so that compressed air supplied to the SCR reactor 130 is efficient. It can also be used as.

밸브(142)는, 일례로 공급라인(140) 상에 마련될 수 있고, 다른 예로 흡기라인(112)에서 공급라인(140)이 분기되는 지점에 마련될 수도 있으며, 이때 삼방밸브로 이루어질 수 있다. The valve 142 may be provided on the supply line 140 as an example, and as another example, the valve 142 may be provided at a point where the supply line 140 is branched from the intake line 112, and may be formed of a three-way valve. .

이러한 밸브(142)는, 엔진(110)의 로드가 설정 로드 이하로 구동되는 경우, 예를 들어 엔진(110)의 로드가 낮아 압축기(122)로부터 공급되는 압축공기가 충분하지 않을 경우, 터보차저(120)의 압축기(122)로부터 발생되는 압축공기가 SCR 반응기(130)로 공급되는 것을 차단하고, 서비스 에어 컴프레서(150)로부터 SCR 반응기(130)로 압축공기가 공급되도록 개도를 조절할 수 있다.Such a valve 142, when the load of the engine 110 is driven below the set load, for example, when the load of the engine 110 is low and the compressed air supplied from the compressor 122 is not sufficient, the turbocharger The compressed air generated from the compressor 122 of the 120 is blocked from being supplied to the SCR reactor 130, and the opening degree can be adjusted so that compressed air is supplied from the service air compressor 150 to the SCR reactor 130.

이에 따라 엔진(110)은, 압축공기의 손실 없이 구동될 수 있으며, SCR 반응기(130)는 서비스 에어 컴프레서(150)를 통해 압축공기를 공급받아 벤팅/씰링이 이루어질 수 있다.Accordingly, the engine 110 may be driven without loss of compressed air, and the SCR reactor 130 may be vented / sealed by receiving compressed air through the service air compressor 150.

여기서 서비스 에어 컴프레서(150)는, 선박에 서비스로 공급되는 압축공기를 발생시킬 수 있으며, 일례로 청소 등에 수행되는 압축공기 일 수 있다.Here, the service air compressor 150 may generate compressed air supplied as a service to the ship, and may be, for example, compressed air performed for cleaning or the like.

더불어 서비스 에어 컴프레서(150)의 하류에는, 벤팅-씰링 유닛(141)과 유사하게 서비스 에어 리저버(151)가 마련되어 압축공기가 예비 또는 일시적으로 저장될 수도 있어, SCR 반응기(130)로 공급되는 압축공기가 효율적으로 이용될 수도 있다.In addition, downstream of the service air compressor 150, similar to the venting-sealing unit 141, a service air reservoir 151 is provided so that compressed air may be preliminarily or temporarily stored, and compression supplied to the SCR reactor 130 Air may be used efficiently.

이와 같이 본 실시예는, SCR 반응기(130)가 엔진(110)에 공급되는 압축공기를 공급받아 SCR 반응기 챔버의 벤팅/씰링에 적용되어, SCR 반응기용 에어 컴프레서를 생략하거나 축소할 수 있어, 시스템이 간소화 및 효율화될 수 있다.As described above, in the present embodiment, the SCR reactor 130 is supplied with compressed air supplied to the engine 110 and is applied to venting / sealing of the SCR reactor chamber, so that the air compressor for the SCR reactor can be omitted or reduced, and the system This can be simplified and streamlined.

이상 본 발명을 구체적인 실시예를 통하여 상세히 설명하였으나, 이는 본 발명을 구체적으로 설명하기 위한 것으로, 본 발명은 이에 한정되지 않으며, 본 발명의 기술적 사상 내에서 당해 분야의 통상의 지식을 가진 자에 의해 그 변형이나 개량이 가능함은 명백하다고 할 것이다.Although the present invention has been described in detail through specific examples, the present invention is specifically for describing the present invention, and the present invention is not limited to this, and by a person skilled in the art within the technical spirit of the present invention. It will be apparent that the modification or improvement is possible.

본 발명의 단순한 변형 내지 변경은 모두 본 발명의 영역에 속하는 것으로 본 발명의 구체적인 보호 범위는 첨부된 특허청구범위에 의하여 명확해질 것이다.All simple modifications or changes of the present invention belong to the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

100: 엔진 시스템 110: 엔진
111: 배기라인 112: 흡기라인
120: 터보차저 121: 터빈
122: 압축기 130: SCR 반응기
140: 공급라인 141: 벤팅-씰링 유닛
142: 밸브 150: 서비스 에어 컴프레서100: engine system 110: engine
111: exhaust line 112: intake line
120: turbocharger 121: turbine
122: compressor 130: SCR reactor
140: supply line 141: venting-sealing unit
142: valve 150: service air compressor

Claims (4)

엔진 구동을 위해 압축공기를 발생시키는 터보차저;
SCR 반응기용 에어 컴프레서 또는 서비스 에어 컴프레서에서 발생되는 압축공기를 사용하지 않거나 보조적으로 사용하기 위해, 상기 터보차저에서 발생되는 압축공기를 공급받아 씰링되거나 벤팅을 이루는 SCR 반응기; 및
상기 터보차저와 상기 SCR 반응기를 연통시켜, 상기 터보차저로부터 발생되는 압축공기를 상기 SCR 반응기로 경유시키는 공급라인을 포함하는 것을 특징으로 하는 엔진 시스템.A turbocharger generating compressed air for driving the engine;
In order to use the compressed air generated by the air compressor for the SCR reactor or the service air compressor or to use it in an auxiliary manner, the SCR reactor is supplied with the compressed air generated by the turbocharger to be sealed or vented; And
And a supply line connecting the turbocharger and the SCR reactor to pass compressed air generated from the turbocharger to the SCR reactor. 제1항에 있어서,
상기 공급라인 상에 마련되고, 상기 엔진의 로드가 설정 로드 이하로 구동되는 경우, 상기 터보차저로부터 발생되는 압축공기가 상기 SCR 반응기로 공급되는 것을 차단하고, 상기 서비스 에어 컴프레서로부터 상기 SCR 반응기로 압축공기가 공급되도록 조절하는 밸브를 더 포함하는 것을 특징으로 하는 엔진 시스템.According to claim 1,
When it is provided on the supply line, and when the engine load is driven below the set load, the compressed air generated from the turbocharger is blocked from being supplied to the SCR reactor, and compressed from the service air compressor to the SCR reactor. The engine system further comprises a valve for adjusting the supply of air. 제1항에 있어서, 상기 서비스 에어 컴프레서는,
선박에 서비스로 공급되는 압축공기를 발생시키는 것을 특징으로 하는 엔진 시스템.According to claim 1, wherein the service air compressor,
Engine system characterized by generating compressed air supplied as a service to the ship. 제1항에 있어서, 상기 공급라인은,
상기 터보차저의 압축기로부터 공기가 유입되도록, 상기 엔진의 흡기라인 상에서 상기 압축기의 하류에서 분기되어 상기 SCR 반응기로 연결되는 것을 특징으로 하는 엔진 시스템.
According to claim 1, The supply line,
The engine system, characterized in that branched from the downstream of the compressor on the intake line of the engine to be connected to the SCR reactor so that air is introduced from the compressor of the turbocharger.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002256866A (en) * 2001-02-28 2002-09-11 Komatsu Ltd Exhaust emission control device for internal combustion engine
KR101497831B1 (en) * 2013-10-07 2015-03-02 두산엔진주식회사 Power plant with selective catalytic reuction system
KR20180010159A (en) * 2016-07-20 2018-01-30 만 디젤 앤 터보 에스이 Method for operating an internal combustion engine and internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002256866A (en) * 2001-02-28 2002-09-11 Komatsu Ltd Exhaust emission control device for internal combustion engine
KR101497831B1 (en) * 2013-10-07 2015-03-02 두산엔진주식회사 Power plant with selective catalytic reuction system
KR20180010159A (en) * 2016-07-20 2018-01-30 만 디젤 앤 터보 에스이 Method for operating an internal combustion engine and internal combustion engine

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