KR20120081373A - Intake apparatus of gas engine - Google Patents

Intake apparatus of gas engine Download PDF

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Publication number
KR20120081373A
KR20120081373A KR1020110002686A KR20110002686A KR20120081373A KR 20120081373 A KR20120081373 A KR 20120081373A KR 1020110002686 A KR1020110002686 A KR 1020110002686A KR 20110002686 A KR20110002686 A KR 20110002686A KR 20120081373 A KR20120081373 A KR 20120081373A
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KR
South Korea
Prior art keywords
fuel
intake
adapter
fuel injection
intake manifold
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KR1020110002686A
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Korean (ko)
Inventor
김진희
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대동공업주식회사
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Priority to KR1020110002686A priority Critical patent/KR20120081373A/en
Publication of KR20120081373A publication Critical patent/KR20120081373A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10019—Means upstream of the fuel injection system, carburettor or plenum chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Abstract

PURPOSE: A structure of an intake system of a gas engine is provided to stably jet the jetted fuel to a center part of an inlet of a suction port such that the fuels stably flow to a combustion chamber. CONSTITUTION: A structure of an intake system of a gas engine comprises an intake manifold(110). The intake manifold comprises an intake port(111), a plurality of pipelines(113), and an adapter(115). The intake port is formed in the center of an intake manifold body. The plurality of pipelines branches to each cylinder. The adapter is integrally formed in each pipeline. A fuel injector(120) is assembled in the adapter.

Description

가스엔진의 흡기계 구조{Intake apparatus of gas engine}Intake apparatus of gas engine

본 발명은 가스엔진의 흡기계 구조에 관한 것으로서, 보다 상세하게는 흡기매니폴드에 연료분사 인젝터를 조립하기 위한 아답터를 일체로 형성하는 가스엔진의 흡기계 구조에 관한 것이다.
The present invention relates to an intake structure of a gas engine, and more particularly, to an intake structure of a gas engine that integrally forms an adapter for assembling a fuel injection injector in an intake manifold.

일반적으로 엔진의 적절한 연료 분사량 제어는 엔진의 출력향상과 연비향상 및 배기가스제어 등 엔진의 전반적인 성능에 미치는 영향이 매우 크며, 최근 상기와 같은 연료 분사량 제어를 위해 사용되는 대표적인 방법으로 MPI(Multi Point Injection)방식이 사용되고 있다.In general, the proper fuel injection amount control of the engine has a great influence on the overall performance of the engine, such as an increase in the engine output, fuel economy, and exhaust gas control, and MPI (Multi Point) is a representative method recently used to control the fuel injection amount as described above. Injection method is used.

이와 같은 MPI방식의 가장 큰 특징은 캬브레터를 사용하지 않는 대신에 연소실 상부에 설치된 흡기매니폴드에 인젝터로 연료를 분사하여 흡기와 연료의 혼합비를 정확히 유지함으로써 출력을 향상시키도록 한 것이다.The biggest feature of the MPI method is that the fuel is injected into the intake manifold installed at the upper part of the combustion chamber instead of using the carburettor to improve the output by maintaining the mixing ratio of the intake and fuel accurately.

특히, 상기 인젝터는 각 연소실로 유입되는 흡기매니폴드에 각각 형성되어 엔진의 각종 운전상태를 파악하고 있는 ECU의 전기적 제어에 의해 작동된다.In particular, the injectors are respectively formed in the intake manifolds flowing into each combustion chamber and operated by electrical control of the ECU which grasps various operating states of the engine.

상기한 바와 같이 ECU에 의해 제어되는 인젝터에 연결된 딜리버리 파이프에서 일정한 압력의 연료가 제공되면, ECU로부터 전해지는 전기신호에 의해 인젝터의 솔레노이드가 동작하여 막고 있던 노즐을 개방하도록 하여 흡기매니폴드 내에 연료를 분사할 수 있도록 되어 있으며, 상기 연료 분사량은 ECU에서 인젝터의 솔레노이드에 통전시키는 시간으로 조절된다.As described above, when a constant pressure fuel is supplied from the delivery pipe connected to the injector controlled by the ECU, the solenoid of the injector is operated by the electric signal transmitted from the ECU to open the nozzle that was blocked, thereby injecting the fuel into the intake manifold. It is possible to inject, and the fuel injection amount is controlled by the time to energize the solenoid of the injector in the ECU.

그러나, 상기한 바와 같은 종래기술은 흡기매니폴드의 각 기통별로 연료분사 인젝터를 조립함에 있어, 별도의 아답터를 먼저 흡기매니폴드에 조립한 후, 상기 흡기매니폴드를 이용해 개별 아답터를 조립하는 로 이루어져 있기 때문에, 조립과정이 번거로운 문제가 있었고, 조립개소가 늘어남에 따라 기밀성을 확보하는데 많은 애로사항을 갖는 문제가 있었다.However, in the prior art as described above, in assembling a fuel injection injector for each cylinder of the intake manifold, a separate adapter is first assembled to the intake manifold, and then the individual adapters are assembled using the intake manifold. As a result, there was a problem that the assembly process is cumbersome, and as the assembly points increase, there are problems that have many difficulties in securing confidentiality.

또한, 종래기술은 연료분사 인젝터의 조립과정에서 분사각도가 정확히 유지되지 못하고, 틀어지는 문제가 있었고, 분사되는 연료가 정확히 연소실 내로 유입되지 못하고 일부가 흡기매니폴드의 내측 벽면에 뭍게 되는 웰웨팅(WALL-WETTING)현상이 발생되기 쉽고, 따라서 연소실내로 유입되는 연료의 양이 줄게 되어 엔진의 출력이 저하되며 미연소 가스가 다량 발생되는 문제가 있었다.In addition, the prior art has a problem that the injection angle is not maintained correctly during the assembly of the fuel injection injector, there is a distortion problem, and the well-wetting (WALL) that the injected fuel does not flow into the combustion chamber exactly, and part of it is on the inner wall of the intake manifold -WETTING) is easy to occur, and thus the amount of fuel flowing into the combustion chamber is reduced, so that the output of the engine is lowered and a large amount of unburned gas is generated.

이와 같은 종래기술은 기통간 연소가 불균일한 문제가 있었고, 연소 불균일의 문제를 해소하기 위해서는 흡기매니폴드의 기통별 흡기 유동의 균일성을 확보해야 하는 문제가 있었다.
Such a prior art has a problem of non-uniform combustion between cylinders, and in order to solve the problem of non-uniform combustion, there is a problem of ensuring uniformity of intake flow for each cylinder of the intake manifold.

상기 종래기술의 문제점을 해결하기 위해 안출된 본 발명의 목적은 본체 중앙부에 흡입구가 위치하며, 상기 흡입구로부터 각 기통별로 분배되는 관로가 형성되는 흡기매니폴드의 각 기통별 관로에 연료분사 인젝터가 조립되는 아답터가 일체로 형성되는 것을 특징으로 하는 가스엔진의 흡기계 구조를 제공함에 있다.An object of the present invention devised to solve the problems of the prior art is a fuel injection injector is assembled to each cylinder of the intake manifold in which the inlet is located in the center of the main body, and the inlet manifold is formed from the inlet. It is to provide an intake system structure of a gas engine, characterized in that the adapter is formed integrally.

본 발명의 다른 목적은 일체형 아답터에 조립되는 연료분사 인젝터의 분사각도를 일정하게 유지함으로써, 연소실 내로 분사연료가 안정적으로 유입되도록 할 수 있고, 각 기통별 흡기 유동의 균일성을 확보함으로써, 연료의 연소효율을 높여 각 기통 간 균일한 연소가 이루어지도록 하는 가스엔진의 흡기계 구조를 제공함에 있다.Another object of the present invention is to maintain the injection angle of the fuel injection injector assembled in the integrated adapter to ensure a stable injection of the injection fuel into the combustion chamber, to ensure the uniformity of the intake flow for each cylinder, It is to provide an intake system structure of a gas engine to increase the combustion efficiency to achieve a uniform combustion between each cylinder.

본 발명의 다른 목적은 연료분사 인젝터의 조립을 위한 아답터 및 상기 연료분사 인젝터에 조립되는 연료레일을 조립하기 위한 레일조립부가 흡기매니폴드의 본체에 일체로 형성되도록 함으로써, 각 요소간 조립성이 향상되도록 하고, 각 요소간 유동을 최소화시켜 기밀성이 향상되도록 하는 가스엔진의 흡기계 구조를 제공함에 있다.Another object of the present invention is to improve the assemblability between the elements by assembling the adapter for assembling the fuel injection injector and the rail assembly for assembling the fuel rail assembled to the fuel injection injector integrally with the main body of the intake manifold. It is to provide a gas engine intake structure to minimize the flow between the elements to improve the airtightness.

본 발명의 다른 목적은 실린더헤드의 흡기포트를 헬리컬(Helical)식 흡기포트(140)로 형성함으로써, 강한 소용돌이(Swirl)에 의한 난류유동을 유도하여 연료분사 인젝터에서 흡기포트로 분사된 연료의 공기 혼합성이 향상되도록 하는 가스엔진의 흡기계 구조를 제공함에 있다.
Another object of the present invention is to form the intake port of the cylinder head as a helical intake port 140, to induce turbulent flow by the strong swirl to inject air from the fuel injection injector to the intake port It is to provide an intake structure of the gas engine to improve the mixing.

상기한 본 발명의 목적은 흡기매니폴드 본체의 중앙부에 흡입구가 형성되고, 상기 흡입구로부터 각 기통별로 분배되는 다수의 관로가 형성되며, 상기 각 관로에 연료분사 인젝터를 조립하기 위한 아답터가 일체로 형성되는 것을 특징으로 하는 가스엔진의 흡기계 구조에 의해 달성될 수 있다.An object of the present invention described above is a suction port is formed in the central portion of the intake manifold body, a plurality of pipes are formed for each cylinder from the suction port is formed, the adapter for assembling the fuel injection injector is formed in each of the pipes integrally formed It can be achieved by the intake system structure of the gas engine, characterized in that.

여기서, 상기 아답터의 상측에 연료분사 인젝터와 결합되어 연료를 공급하는 연료레일이 조립되기 위한 연료레일 조립부가 형성될 수 있다.Here, a fuel rail assembly may be formed on the upper side of the adapter to assemble a fuel rail that is combined with a fuel injection injector to supply fuel.

또한, 상기 아답터와 결합되는 연료분사 인젝터의 분사중심이 실린더헤드의 흡기포트 입구중심과 만나도록 형성된다.In addition, the injection center of the fuel injection injector coupled with the adapter is formed to meet the inlet port inlet center of the cylinder head.

이때, 상기 흡기포트를 헬리컬식으로 형성하여 연료분사 인젝터에서 흡기포트로 분사되는 연료의 강한 소용돌이에 의한 난류유동을 유도하여 공기 혼합성이 개선되도록 할 수 있다.
In this case, the intake port may be formed in a helical manner to induce turbulent flow due to the strong vortex of fuel injected from the fuel injection injector to the intake port, thereby improving air mixing.

상기 본 발명은 본체 중앙부에 흡입구가 위치하며, 상기 흡입구로부터 각 기통별로 분배되는 관로가 형성되는 흡기매니폴드의 각 기통별 관로에 연료분사 인젝터가 조립되는 아답터가 일체로 형성됨으로써, 연료분사 인젝터의 조립성이 개선되도록 할 수 있고, 연료분사 인젝터의 분사각도를 일정하게 유지시켜 분사연료가 실린더헤드 흡기포트의 입구 중심부를 향해 안정적으로 분사되도록 함으로써, 연소실 내로 분사연료가 안정적으로 유입되도록 할 수 있고, 각 기통별 흡기 유동의 균일성을 확보함으로써, 연료의 연소효율을 높여 각 기통 간 균일한 연소가 이루어져 엔진의 성능 및 출력이 향상되는 효과를 갖는다.In the present invention, the inlet port is located in the center of the main body, and the adapter for the fuel injection injector is integrally formed in the respective inlet duct of the intake manifold in which the inlet manifold is formed by the inlet manifold, the fuel injection injector It is possible to improve the assemblability, to maintain a constant injection angle of the fuel injection injector to ensure that the injection fuel is stably injected toward the inlet center of the cylinder head intake port, so that the injection fuel can be stably introduced into the combustion chamber By securing the uniformity of intake flow for each cylinder, the combustion efficiency of the fuel is increased to achieve uniform combustion between the cylinders, thereby improving the performance and output of the engine.

또한, 본 발명은 연료분사 인젝터의 조립을 위한 아답터 및 상기 연료분사 인젝터에 조립되는 연료레일을 조립하기 위한 레일조립부가 흡기매니폴드의 본체에 일체로 형성되도록 함으로써, 각 요소간 조립성이 향상되도록 하고, 각 요소간 유동을 최소화시켜 기밀성이 향상되는 효과를 갖는다.The present invention also provides an adapter for assembling a fuel injection injector and a rail assembly for assembling a fuel rail assembled to the fuel injection injector to be integrally formed in the main body of the intake manifold, thereby improving the assemblability between the elements. And, by minimizing the flow between each element has the effect of improving the airtightness.

또한, 본 발명은 실린더헤드의 흡기포트를 헬리컬(Helical)식 흡기포트로 형성함으로써, 강한 소용돌이(Swirl)에 의한 난류유동을 유도하여 연료분사 인젝터에서 흡기포트로 분사된 연료의 공기 혼합성을 높여 연소효율을 증대시킬 수 있고, 이로 인해 엔진 성능 및 효율이 향상되는 효과를 갖는다.
In addition, the present invention by forming the intake port of the cylinder head as a helical intake port, induces turbulent flow due to the strong swirl to increase the air mixing of the fuel injected from the fuel injection injector to the intake port It is possible to increase the combustion efficiency, thereby improving the engine performance and efficiency.

도 1은 본 발명의 실시예에 따른 가스엔진용 연료인젝터 아답터 일체형 흡기매니폴드에 인젝터를 결합한 상태를 도시한 단면도.
도 2는 본 발명의 실시예에 따른 가스엔진용 연료인젝터 아답터 일체형 흡기매니폴드 구조를 도시한 평면도.
도 3은 본 발명의 실시예에 따른 가스엔진용 연료인젝터 아답터 일체형 흡기매니폴드 구조를 도시한 정면도.1 is a cross-sectional view illustrating a state in which an injector is coupled to a fuel injector adapter integrated intake manifold for a gas engine according to an embodiment of the present invention.
Figure 2 is a plan view showing a fuel injector adapter integrated intake manifold structure for a gas engine according to an embodiment of the present invention.
Figure 3 is a front view showing a fuel injector adapter integrated intake manifold structure for a gas engine according to an embodiment of the present invention.

이하, 본 발명의 바람직한 실시예에 대해 첨부된 도면을 참조하여 자세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1내지 도 3을 참조하면, 본 발명의 실시예에 따른 가스엔진용 흡기매니폴드(110)가 개시된다.1 to 3, an intake manifold 110 for a gas engine according to an embodiment of the present invention is disclosed.

상기 흡기매니폴드(110)는 엔진의 상부에서 실린더헤드의 흡기포트(140) 측과 결합되어 연소공기를 공급하게 된다.The intake manifold 110 is coupled to the intake port 140 side of the cylinder head at the top of the engine to supply combustion air.

여기서, 상기 흡기매니폴드(110)는 MPI(Multi Point Injection) 분사방식이 사용되는 것으로서, 흡기매니폴드(110) 본체의 중앙부에 흡입구(111)가 형성되고, 상기 흡입구(111)로부터 각 기통별로 분배되는 다수의 관로(113)가 형성된다.Here, the intake manifold 110 is a multi-point injection (MPI) injection method is used, the inlet 111 is formed in the central portion of the main body of the intake manifold 110, each cylinder from the inlet 111 A plurality of conduits 113 are formed to be distributed.

이때, 상기 흡입구(111)는 에어클리너(미도시) 측에 연결되며, 각 관로(113)는 실린더헤드의 흡기포트(140)와 연결된다.At this time, the inlet 111 is connected to the air cleaner (not shown) side, each of the conduit 113 is connected to the intake port 140 of the cylinder head.

상기와 같은 흡기매니폴드(110)에는 연료분사 인젝터(120)가 결합됨으로써, 각 관로 상에 연료를 분사시켜 연소공기와 혼합되어 실린더헤드의 흡기포트(140)로 공급되도록 한다.As the fuel injection injector 120 is coupled to the intake manifold 110 as described above, the fuel is injected onto each conduit to be mixed with combustion air to be supplied to the intake port 140 of the cylinder head.

본 발명의 실시예에서는 상기 각 관로(113)에 연료분사 인젝터(120)를 조립하기 위한 일체형 아답터(115)가 형성되도록 할 수 있다.In the exemplary embodiment of the present invention, an integrated adapter 115 for assembling the fuel injection injector 120 may be formed in each of the conduits 113.

상기 아답터(115)는 흡기매니폴드(110)의 금형 제작시 일체형으로 제작되는데, 연료분사 인젝터(120)가 축 결합되기 위한 결합홀이 가공된다.The adapter 115 is manufactured integrally when the mold of the intake manifold 110 is manufactured, and a coupling hole for shaft coupling of the fuel injection injector 120 is processed.

이때, 상기 아답터(115)에 결합되는 연료분사 인젝터(120)는 분사중심(121)이 실린더헤드의 흡기포트(140) 입구중심(141)과 만나도록 설계 된다.In this case, the fuel injection injector 120 coupled to the adapter 115 is designed such that the injection center 121 meets the inlet center 141 of the intake port 140 of the cylinder head.

이와 같은 본 발명은 흡기매니폴드(110)의 각 기통별 관로(113)에 아답터(115)가 일체로 형성됨으로써, 연료분사 인젝터(120)의 조립성이 개선되도록 할 수 있고, 연료분사 인젝터(120)의 분사각도를 일정하게 유지시켜 분사연료가 실린더헤드 흡기포트(140)의 입구 중심부를 향해 안정적으로 분사되도록 할 수 있다.In the present invention as described above, the adapter 115 is integrally formed in the pipe 113 for each cylinder of the intake manifold 110, so that the assemblability of the fuel injection injector 120 can be improved, and the fuel injection injector ( The injection angle of 120 may be kept constant so that the injection fuel may be stably sprayed toward the inlet center of the cylinder head intake port 140.

실린더헤드 흡기포트(140) 즉, 연소실 내로 분사연료가 안정적으로 유입됨에 따라 각 기통별 흡기 유동의 균일성을 확보할 수 있고, 연료의 연소효율을 높여 각 기통 간 균일한 연소가 이루어져 엔진의 성능 및 출력 향상에 기여하게 된다.
As the injecting fuel is stably introduced into the cylinder head intake port 140, ie, the combustion chamber, it is possible to secure uniform intake flow of each cylinder, and improve combustion efficiency of the fuel to achieve uniform combustion between the cylinders. And to improve output.

그리고, 상기 흡기매니폴드(110)의 아답터(115)의 상측에 연료레일조립부(118)가 형성되고, 상기 연료레일조립부(118)를 통해 연료분사 인젝터(120)에 연료를 공급하는 연료레일(130)이 조립되도록 할 수 있다.In addition, a fuel rail assembly 118 is formed above the adapter 115 of the intake manifold 110, and a fuel supplying fuel to the fuel injection injector 120 through the fuel rail assembly 118. The rail 130 may be assembled.

이때, 상기 연료레일조립부(118)는 나사결합이 가능한 탭이 가공될 수 있다.In this case, the fuel rail assembly 118 may be a tab capable of screwing.

상기 연료레일(130)은 다수의 연료분사 인젝터(120)와 결합되어 연료를 공급하게 된다.The fuel rail 130 is combined with a plurality of fuel injection injectors 120 to supply fuel.

이와 같은 본 발명은 연료분사 인젝터(120)의 조립을 위한 아답터(115) 및 상기 연료분사 인젝터(120)에 조립되는 연료레일(130)을 조립하기 위한 레일조립부(118)가 흡기매니폴드(110)의 본체에 일체로 형성되도록 함으로써, 각 요소간 조립성이 향상되도록 하고, 각 요소간 유동을 최소화시켜 기밀성이 향상되도록 하는데 기여하게 된다.
In the present invention as described above, the adapter 115 for assembling the fuel injection injector 120 and the rail assembly 118 for assembling the fuel rail 130 assembled to the fuel injection injector 120 include an intake manifold ( By being integrally formed in the main body of 110, it is possible to improve the assemblability between each element, and contribute to improve the airtightness by minimizing the flow between each element.

그리고, 본 발명의 실시예에 따른 흡기매니폴드(110)와 결합되는 실린더헤드의 흡기포트(140)를 헬리컬(Helical)식으로 형성할 수 있는데, 이와 같은 구조를 통해 연료분사 인젝터(120)에서 흡기포트(140)로 분사되는 연료의 강한 소용돌이에 의한 난류유동을 유도하여 공기 혼합성을 높여 연소효율을 증대시킬 수 있고, 이로 인해 엔진 성능 및 효율이 향상되도록 할 수 있다.
In addition, the intake port 140 of the cylinder head coupled to the intake manifold 110 according to the embodiment of the present invention may be formed in a helical manner, through the structure of the fuel injection injector 120. By inducing turbulent flow due to the strong vortex of the fuel injected into the intake port 140, it is possible to increase the air efficiency to increase the combustion efficiency, thereby improving the engine performance and efficiency.

그리고, 상기 흡기매니폴드(110)의 상부 일측에는 센서조립부(117)가 형성될 수 있는데, 상기 센서조립부(117)에는 엔진에 공급되는 연료량을 결정하기 위한 MAP(Manifold Absolute Pressure)센서가 설치된다.In addition, a sensor assembly unit 117 may be formed at an upper side of the intake manifold 110. The sensor assembly unit 117 includes a MAP (Manifold Absolute Pressure) sensor for determining an amount of fuel supplied to an engine. Is installed.

여기서, 상기 MAP센서는 엔진에 들어오는 공기량을 흡기매니폴드(110) 내부 압력측정을 통해 간접 계측하게 되는데, 이때, 상기 MAP센서의 신호는 ECU로 전달되어 연료분사 인젝터(120)의 연료분사량을 전기적으로 제어하게 된다.Here, the MAP sensor indirectly measures the amount of air entering the engine through the intake manifold 110 internal pressure measurement, wherein the signal of the MAP sensor is transmitted to the ECU to electrically convert the fuel injection amount of the fuel injection injector 120. To control.

앞서 살펴본 바와 같은 본 발명은 MPI 방식을 갖는 가스엔진의 흡기계 구조에 적용됨으로써, 엔진의 성능 및 효율을 향상시키는데 기여하게 된다.The present invention as described above is applied to the intake structure of the gas engine having the MPI method, thereby contributing to improving the performance and efficiency of the engine.

110: 흡기매니폴드 111: 흡입구
113: 관로 115: 아답터
117: 센서조립부 118: 연료레일 조립부
120: 연료분사 인젝터 121: 분사중심
130: 연료레일 140: 흡기포트
141: 입구중심 110: intake manifold 111: inlet
113: pipeline 115: adapter
117: sensor assembly 118: fuel rail assembly
120: fuel injection injector 121: injection center
130: fuel rail 140: intake port
141: entrance center

Claims (4)

흡기매니폴드(110) 본체의 중앙부에 흡입구(111)가 형성되고, 상기 흡입구(111)로부터 각 기통별로 분배되는 다수의 관로(113)가 형성되며, 상기 각 관로(113)에 연료분사 인젝터(120)를 조립하기 위한 아답터(115)가 일체로 형성되는 것을 특징으로 하는 가스엔진의 흡기계 구조.
Inlet 111 is formed in the central portion of the main body of the intake manifold 110, and a plurality of conduits 113 are formed from the inlet 111 for each cylinder, and a fuel injection injector is formed in each of the conduits 113. Intake system structure of a gas engine, characterized in that the adapter 115 for assembling 120 is formed integrally.
제1항에 있어서,
상기 아답터(115)의 상측에 연료분사 인젝터(120)와 결합되어 연료를 공급하는 연료레일(130)이 조립되기 위한 연료레일조립부(118)가 형성되는 것을 특징으로 하는 가스엔진의 흡기계 구조.
The method of claim 1,
A fuel rail assembly 118 is formed on the upper side of the adapter 115 to form a fuel rail assembly 118 that is coupled to the fuel injection injector 120 to supply fuel. .
제1항에 있어서,
상기 아답터(115)와 결합되는 연료분사 인젝터(120)의 분사중심(121)이 실린더헤드의 흡기포트(140)의 입구중심(141)과 만나는 것을 특징으로 하는 가스엔진의 흡기계 구조.
The method of claim 1,
The injection center 121 of the fuel injection injector 120 coupled with the adapter 115 meets the inlet center 141 of the intake port 140 of the cylinder head.
제3항에 있어서,
상기 흡기포트(140)를 헬리컬식으로 형성하여 연료분사 인젝터에서 흡기포트로 분사되는 연료의 강한 소용돌이에 의한 난류유동을 유도하여 공기 혼합성이 개선되도록 하는 것을 특징으로 하는 가스엔진의 흡기계 구조.The method of claim 3,
The intake port structure of the gas engine, wherein the intake port 140 is formed in a helical manner to induce turbulent flow due to the strong vortex of the fuel injected from the fuel injection injector to the intake port to improve air mixing.
KR1020110002686A 2011-01-11 2011-01-11 Intake apparatus of gas engine KR20120081373A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101471167B1 (en) * 2013-07-08 2014-12-11 한국기계연구원 Fuel supply apparatus for diesel-gas dual fuel engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101471167B1 (en) * 2013-07-08 2014-12-11 한국기계연구원 Fuel supply apparatus for diesel-gas dual fuel engine

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