KR100375602B1 - Apparatus of Premixed charged compression injection engine - Google Patents

Apparatus of Premixed charged compression injection engine Download PDF

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Publication number
KR100375602B1
KR100375602B1 KR10-1999-0067615A KR19990067615A KR100375602B1 KR 100375602 B1 KR100375602 B1 KR 100375602B1 KR 19990067615 A KR19990067615 A KR 19990067615A KR 100375602 B1 KR100375602 B1 KR 100375602B1
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South Korea
Prior art keywords
combustion chamber
fuel
mixer
injector
gasoline
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KR10-1999-0067615A
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Korean (ko)
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KR20010066033A (en
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김우태
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현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/12—Engines characterised by fuel-air mixture compression with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
    • F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
    • F02D41/3035—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the premixed charge compression-ignition mode
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

본 발명은 가솔린 예혼합 압축착화 엔진 구조(PCCI: Premixed charged compression injection engine) 에 관한 것으로서,The present invention relates to a gasoline premixed compression compression engine structure (PCCI:

흡기밸브(5)와 배기밸브(7)가 형성된 흡기포트(4)와 배기포트(6)를 가지며, 예혼합된 가솔린 연료를 고온, 고압으로 압축시켜 자연 점화시키는 가솔린 예혼합 압축착화 엔진 구조 엔진구조에 있어서,Gasoline premixed compression ignition engine structure engine having an intake port 4 and an exhaust port 6 having an intake valve 5 and an exhaust valve 7 formed therein and compressing the premixed gasoline fuel to a high temperature and a high pressure. In structure,

흡기포트(4)의 전단계인 흡기매니폴드(8) 상에 제 1 인젝터(9)를 형성하여 흡기매니폴드(8)에서부터 공기와 연료가 균일하게 혼합되어 초희박혼합기 상태를 이루도록하고, 연소실(1) 상단에 직접분사식 제 2 인젝터(10)를 설치하여 연소실(1) 내로 유입되는 혼합기와 제 2 인젝터(10)에서 분사되는 혼합기가 텀블유동되면서 고르게 혼합되도록 한 것을 특징으로하여 연소실 내에서 고온, 고압으로 압축된 상태로 존재하는 혼합기에 일정양의 연료를 분사하여 자연 착화되도록 하므로서, 가솔린 예혼합 압축착화 엔진 구조 엔진의 착화율을 향상시켜 연소율 향상 및 배기가스 감소의 효과를 기대할 수 있도록 한 가솔린 예혼합 압축착화 엔진 구조에 관한 것이다.The first injector 9 is formed on the intake manifold 8, which is the preliminary step of the intake port 4, so that air and fuel are uniformly mixed from the intake manifold 8 to form an ultra-thin mixer, and a combustion chamber ( 1) The direct injection type second injector 10 is installed at the top, so that the mixer introduced into the combustion chamber 1 and the mixer injected from the second injector 10 are mixed evenly while being tumbled and flowed in a high temperature in the combustion chamber. By injecting a certain amount of fuel into a mixer that is compressed under high pressure, the ignition rate of the gasoline premixed compression ignition engine structure engine is improved, and the combustion rate and the exhaust gas reduction effect can be expected. A gasoline premixed compression ignition engine structure.

Description

가솔린 예혼합 압축착화 엔진 구조 {Apparatus of Premixed charged compression injection engine}{Apparatus of Premixed charged compression injection engine}

본 발명은 가솔린 예혼합 압축착화 엔진 구조(PCCI: Premixed charged compression injection engine)에 관한 것으로서, 특히 흡기매니폴드상에 일정양의연료를 분사하는 제 1 인젝터를 설치하여 공기와 미량의 연료가 예혼합되도록 하고, 연소실의 중앙 상단에 직접분사식 제 2 인젝터를 설치하여 연소실 내에서 고온, 고압으로 압축된 상태로 존재하는 혼합기에 일정양의 연료를 분사하여 자연 착화되도록 하므로서, 가솔린 예혼합 압축착화 엔진 구조 엔진의 착화율을 향상시켜 연소율 향상 및 배기가스 감소의 효과를 기대할 수 있도록 한 가솔린 예혼합 압축착화 엔진 구조 엔진구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasoline premixed compression compression engine (PCCI) structure. In particular, a first injector for injecting a certain amount of fuel on an intake manifold is provided to premix air and a small amount of fuel. Gasoline premixed compression ignition engine structure by installing a second injector directly at the center of the combustion chamber to inject a certain amount of fuel into the mixer existing in a compressed state at high temperature and high pressure in the combustion chamber The present invention relates to a gasoline premixed compression ignition engine structure engine structure in which an ignition rate of an engine is improved to enable an effect of improving combustion rate and reducing exhaust gas.

가솔린 예혼합 압축착화 엔진 구조 엔진은 현재 개발중인 엔진으로서, 일반적인 가솔린 엔진이 연소실 내부로 공기와 연료가 일정비율로 혼합된 혼합기를 흡입하여 압축하고, 혼합기가 압축된 상태에서 인위적으로 스파크를 발생시켜 연소되도록 하는 것인데 반해, 상기 가솔린 예혼합 압축착화 엔진은 공기와 연료가 일정비율로 혼합된 혼합기를 연소실 내부로 흡입하여 고온, 고압의 상태로 압축시켜 자연 발화되도록 하여 연소시키는 것을 말한다.The gasoline premixed compression ignition engine structure engine is a development engine, and a general gasoline engine sucks and mixes a mixture of air and fuel at a predetermined ratio into a combustion chamber, and artificially generates sparks while the mixer is compressed. The gasoline premixed compression ignition engine refers to a combustion in which a mixture of air and fuel is mixed at a predetermined ratio into a combustion chamber and compressed into a high temperature and high pressure to spontaneously ignite.

이러한 가솔린 예혼합 압축착화 엔진 구조는 공연비가 가장 뛰어난 것으로 알려져있는 디젤엔진보다 월등히 향상된 공연비를 나타내는 것으로 실험결과 확인되고 있다.The gasoline premixed compression ignition engine structure has been confirmed to show a significantly improved air-fuel ratio than the diesel engine is known to have the best air-fuel ratio.

도 2 는 종래의 가솔린 예혼합 압축착화 엔진 구조를 나타내는 것으로서,2 shows a conventional gasoline premixed compression ignition engine structure,

실린더헤드(21)와 피스톤(22) 사이에 형성되는 연소실(20)의 상측으로 흡기포트(23)와 배기포트(26)가 각각 형성되어 있고, 각각의 흡기포트(23)와 배기포트(26)에는 흡기 및 배기를 위한 흡기밸브(25)와 배기밸브(27)가 설치된다.An intake port 23 and an exhaust port 26 are respectively formed above the combustion chamber 20 formed between the cylinder head 21 and the piston 22, and each intake port 23 and exhaust port 26 are formed. ) Is provided with an intake valve 25 and an exhaust valve 27 for intake and exhaust.

그리고, 상기 흡기포트(26) 상단으로는 흡기포트(26)를 통해 연소실(20)로공급되는 공기에 일정양의 연료를 분사시켜주는 인젝터(24)가 설치되어 있으며, 상기 피스톤(22)의 상면에는 연소실(20) 내부로 유입된 혼합기가 유동되면서 잘 혼합될 수 있도록 하는 유동홈(28)이 형성된 구성이다.In addition, an injector 24 is installed at the upper end of the intake port 26 to inject a predetermined amount of fuel into the air supplied to the combustion chamber 20 through the intake port 26. The upper surface is a configuration in which a flow groove 28 is formed so that the mixer introduced into the combustion chamber 20 can be mixed while flowing.

이와같이 구성된 종래의 가솔린 예혼합 압축착화 엔진 구조는 흡기행정에서 흡기밸브(25)가 열리면서 흡기포트(23)를 통해 공기가 연소실(20)로 흡입되는데, 이때 흡기포트(23)의 상측에 형성된 인젝터(24)를 통해 일정양의 연료가 분사되어 공기와 함께 연소실(20) 내부로 공급된다.In the conventional gasoline premixed compression ignition engine structure configured as described above, air is sucked into the combustion chamber 20 through the intake port 23 while the intake valve 25 is opened in the intake stroke, wherein an injector formed above the intake port 23 is formed. Through 24, a certain amount of fuel is injected and supplied into the combustion chamber 20 together with air.

연소실(20) 내부로 공급된 혼합기는 유동홈(28)에 의해 잘 혼합되고, 압축행정에서 상승하는 피스톤(22)에 의해 고온, 고압으로 압축되고, 혼합기의 온도가 최고 온도에 다다렀을때(피스톤(22)이 상사점에 도달했을때) 연소실(20) 내의 혼합기가 자연발화되어 연소된다.The mixer supplied into the combustion chamber 20 is mixed well by the flow groove 28, compressed by high pressure and high pressure by the piston 22 rising in the compression stroke, and the temperature of the mixer reaches the maximum temperature ( When the piston 22 reaches the top dead center, the mixer in the combustion chamber 20 is spontaneously ignited and combusted.

연소실(20) 내에서의 폭발력에 의해 피스톤(22)은 다시 급강하하게되며, 다시 피스톤(22)이 상승할때 배기밸브(27)가 열리면서 배기가스가 배기포트(26)를 통해 배출된다.By the explosive force in the combustion chamber 20, the piston 22 is suddenly dropped again, and when the piston 22 rises again, the exhaust valve 27 is opened and the exhaust gas is discharged through the exhaust port 26.

상기 설명과 같이 동작하는 종래의 가솔린 예혼합 압축착화 엔진은 가솔린을 연료로 사용하면서 디젤엔진과 같은 압축 착화방법을 사용하므로서 공연비를 최소화하고, 연소율을 높임에 따라 배출되는 배기가스의 양을 현저히 줄일 수 있는 장점을 가지고 있다.The conventional gasoline premixed compression ignition engine operating as described above minimizes the air-fuel ratio by using a compression ignition method such as a diesel engine while using gasoline as fuel, and significantly reduces the amount of exhaust gas emitted by increasing the combustion rate. It has advantages.

그러나, 종래의 가솔린 예혼합 압축착화 엔진은 흡기행정에서 흡기밸브(25)가 열리면서 흡기포트(23)를 통해 공기가 연소실(20) 내부로 공급될때흡기포트(23)의 상측에 형성되어 있는 인젝터(24)에서 일정양의 공기가 분사되어 공기와 함께 연소실(20)로 공급되기 때문에 공기와 가솔린연료가 혼합될 수 있는 시간이 짧아져 고온, 고압으로 압축되더라도 자기착화되는 비율이 하락하게되는 문제점을 갖고 있었다.However, in the conventional gasoline premixed compression ignition engine, an injector formed above the intake port 23 when air is supplied into the combustion chamber 20 through the intake port 23 while the intake valve 25 is opened in the intake stroke. Since a certain amount of air is injected at (24) and supplied to the combustion chamber 20 together with air, the time for mixing air and gasoline fuel is shortened, so that the rate of self-ignition decreases even when compressed at high temperature and high pressure. Had.

따라서, 상기 문제점을 해결하기 위한 본 발명은 흡기매니폴드상에 일정양의 연료를 분사하는 제 1 인젝터를 설치하여 공기와 미량의 연료가 예혼합되도록 하고, 연소실의 중앙 상단에 직접분사식 제 2 인젝터를 설치하여 연소실 내에서 고온, 고압으로 압축된 상태로 존재하는 혼합기에 일정양의 연료를 분사하여 자연 착화되도록 하므로서, 가솔린 예혼합 압축착화 엔진 구조 엔진의 착화율을 향상시켜 연소율 향상 및 배기가스 감소의 효과를 기대할 수 있도록 한 가솔린 예혼합 압축착화 엔진구조를 제공함을 목적으로 한다.Accordingly, the present invention for solving the above problems is to install a first injector for injecting a certain amount of fuel on the intake manifold to premix the air and a small amount of fuel, the second injection injector directly in the center of the combustion chamber By installing a fuel injection in a certain amount of fuel to the mixer existing in a compressed state in the combustion chamber at high pressure, so that the natural ignition, improve the ignition rate of the gasoline premixed compression ignition engine structure engine to improve the combustion rate and reduce the exhaust gas It is an object of the present invention to provide a gasoline premixed compression ignition engine structure that can be expected to be effective.

상기 목적달성을 위한 본 발명의 특징은,Features of the present invention for achieving the above object,

흡기밸브와 배기밸브가 형성된 흡기포트와 배기포트를 가지며, 예혼합된 가솔린 연료를 고온, 고압으로 압축시켜 자연 점화시키는 가솔린 예혼합 압축착화 엔진에 있어서,A gasoline premixed compression ignition engine having an intake port and an exhaust port formed with an intake valve and an exhaust valve, wherein the premixed gasoline fuel is compressed at high temperature and high pressure to naturally ignite.

흡기포트의 전단계인 흡기매니폴드 상에 제 1 인젝터를 형성하여 흡기매니폴드에서부터 공기와 연료가 균일하게 혼합되어 초희박혼합기 상태를 이루도록하고, 연소실 상단에 직접분사식 제 2 인젝터를 설치하여 연소실 내로 유입되는 혼합기와 제 2 인젝터에서 분사되는 혼합기가 텀블유동되면서 고르게 혼합되도록 한 것을 특징으로 한다.The first injector is formed on the intake manifold, which is the previous stage of the intake port, so that air and fuel are uniformly mixed from the intake manifold to form a ultra-thin mixer, and a second injection injector is installed directly on top of the combustion chamber to enter the combustion chamber. The mixer and the mixer is injected from the second injector is characterized in that the tumble flow to mix evenly.

도 1 은 본 발명의 가솔린 예혼합 압축착화 엔진 구조 엔진 구조를 보인 단1 is a diagram showing an engine structure of a gasoline premixed compression ignition engine structure of the present invention

면도.shave.

도 2 는 종래의 가솔린 예혼합 압축착화 엔진 구조 엔진 구조를 보인 단면Figure 2 is a cross-sectional view showing a conventional gasoline premixed compression ignition engine structure engine structure

도.Degree.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

1: 연소실, 2: 실린더헤드,1: combustion chamber, 2: cylinder head,

3: 피스톤, 4: 흡기포트,3: piston, 4: intake port,

5: 흡기밸브, 6: 배기포트,5: intake valve, 6: exhaust port,

7: 배기밸브, 8: 흡기매니폴드,7: exhaust valve, 8: intake manifold,

9: 제 1 인젝터, 10: 제 2 인젝터,9: first injector, 10: second injector,

이하, 첨부된 도면 도 1 을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도면부호 1 은 실린더헤드(2)와 피스톤(3)의 사이에 형성되는 연소실을 나타내며, 이 연소실(1)의 상단에는 흡기매니폴드(8)를 통해 입력되는 공기를 연소실(1)로 안내하는 흡기포트(4)와 배기가스의 배출통로가 되는 배기포트(6)가 각각 형성되어 있다.Reference numeral 1 denotes a combustion chamber formed between the cylinder head 2 and the piston 3, and the upper end of the combustion chamber 1 guides the air input through the intake manifold 8 to the combustion chamber 1; An intake port 4 and an exhaust port 6 serving as an exhaust passage of the exhaust gas are formed, respectively.

상기 흡기포트(4)에는 흡기포트(4)를 단속하여 공기와 연료가 예혼합된 상태의 혼합기를 연소실(1)로 공급하는 흡기밸브가 형성되고, 배기포트(6)에는 배기포트(6)를 단속하여 연소동작 후 배기가스가 배기포트(6)를 통해 배출되도록 하는 배기밸브(7)가 형성되어 있다.An intake valve 4 is formed in the intake port 4 to control the intake port 4 to supply a mixer in a premixed state with air and fuel to the combustion chamber 1, and an exhaust port 6 is provided in the exhaust port 6. The exhaust valve 7 is formed so that the exhaust gas is discharged through the exhaust port 6 after the combustion operation.

본 발명의 가장 큰 특징은 흡기매니폴드(8)상에 제 1 인젝터(9)를 설치하여 흡기매니폴드(8)를 통해 이동하는 공기상에 일정양의 가솔린연료를 분사하여 흡기매니폴드(8) 상에서 공기와 연료가 미리 혼합되어 초희박 혼합기 상태를 이루도록 한 것이다.The biggest feature of the present invention is to install a first injector 9 on the intake manifold 8 to inject a certain amount of gasoline fuel on the air moving through the intake manifold 8 to intake manifold 8 Air and fuel are mixed in advance to achieve ultra-thin mixer.

흡기매니폴드(8) 상에서 미리 연료를 분사하게되면 공기와 연료가 혼합된 상태로 흡기포트(23) 측으로 이동하여 연소실(20)로 공급됨에 따라 공기와 연료가 매우 균일하게 혼합되는 효과를 기대할 수 있다.When the fuel is injected in advance on the intake manifold 8, the air and the fuel are mixed to the intake port 23 in a state where air and fuel are mixed and supplied to the combustion chamber 20. have.

한편, 본 발명에서는 연소실(1)의 상단에 직접 분사식 제 2 인젝터(10)를 설치하여 배기행정의 말기부분에 연소실(1)로 일정양의 연료를 분사하도록 하여 제 2 인젝터(10)로 부터 피스톤(3)의 상측에 형성된 유동홈(11)으로 연료가 직접 분사됨에 따라 연소실(1) 내에서 연료가 텀블(Tumble) 유동되면서 균질하게 혼합되도록 하였다.Meanwhile, in the present invention, a second injection injector 10 is directly installed at the upper end of the combustion chamber 1 to inject a certain amount of fuel into the combustion chamber 1 at the end of the exhaust stroke from the second injector 10. As the fuel is injected directly into the flow groove 11 formed on the upper side of the piston 3, the fuel is tumbled in the combustion chamber 1 so that the fuel is homogeneously mixed.

상기 제 2 인젝터(10)는 넓은 분사각을 가지며, 공기와 함께 연료를 분사하는 직접 분사식 인젝터를 사용하는 것이 바람직하다.The second injector 10 has a wide injection angle, it is preferable to use a direct injection injector for injecting fuel with air.

이와같이 구성된 본 발명의 동작을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above is as follows.

먼저, 흡기행정에서 흡기밸브(5)가 열리면서 흡기포트(4)가 개방될때 흡기매니폴드(8) 상에 형성되어 있는 제 1 인젝터(9)에서 일정양의 연료가 분사되어 흡입 공기와 균일하게 예혼합된 상태로 연소실(1)로 공급된다.First, when the intake valve 5 is opened in the intake stroke and the intake port 4 is opened, a certain amount of fuel is injected from the first injector 9 formed on the intake manifold 8 so as to be uniform with the intake air. It is supplied to the combustion chamber 1 in the pre-mixed state.

이때 연소실(1) 내에서는 이전 행정인 배기행정 말기부분에서 제 2 인젝터(10)에서 분사된 연료가 피스톤(3)의 유동홈(11)에 의해 텀블유동되면서 균질 혼합기 상태를 유지하고 있는 상태이다.At this time, in the combustion chamber 1, the fuel injected from the second injector 10 at the end of the exhaust stroke, which is the previous stroke, is tumbled by the flow groove 11 of the piston 3 and maintains a homogeneous mixer state. .

따라서, 상기 흡기포트(4)를 통해 연소실(1)로 공급된 예혼합기가 연소실(1) 내의 균질 혼합기와 잘 혼합되면서 일정비율로 잘 혼합된 혼합기 상태를 유지하게 되며, 압축행정에서 피스톤(3)이 상승할때 연소실(1) 내의 혼합기가 고온, 고압으로 압축되고, 피스톤(3)이 최고점에 다다른 시점에서 고온, 고압 상태의 혼합기가 자연착화되면서 연소되는 것이다.Therefore, the premixer supplied to the combustion chamber 1 through the intake port 4 is well mixed with the homogeneous mixer in the combustion chamber 1 and maintains a well-mixed mixer at a constant ratio, and the piston 3 in the compression stroke. When the) rises, the mixer in the combustion chamber 1 is compressed to high temperature and high pressure, and when the piston 3 reaches its highest point, the mixer of the high temperature and high pressure state is combusted while spontaneously ignited.

이후, 배기행정이 시작되면서 배기밸브(7)가 개방되어 연소실(1) 내에 존재하는 배기가스가 배기포트(6)를 통해 배출되며, 이 배기행정의 말기부분에서 앞서설명한 바와같이 제 2 인젝터(10)로 부터 일정양의 연료가 분사되어 다시 연소실(1) 내에서 균질 혼합기 상태를 유지하게 되는 것이다.Thereafter, when the exhaust stroke starts, the exhaust valve 7 is opened so that the exhaust gas existing in the combustion chamber 1 is discharged through the exhaust port 6, and the second injector (as described above) at the end of the exhaust stroke. A certain amount of fuel is injected from 10 to maintain the homogeneous mixer in the combustion chamber 1 again.

이상에서 설명한 바와같이 본 발명에서는 흡기매니폴드(9)와 연소실(1)의 상측에 각각 제 1 및 제 2 인젝터(9)(10)를 설치하여 공기와 연료가 균일하게 혼합되도록 하여 가솔린연료의 고온, 고압 압축에 의한 자연착화율을 높일 수 있도록 한 것이다.As described above, in the present invention, first and second injectors 9 and 10 are respectively provided above the intake manifold 9 and the combustion chamber 1 so that air and fuel are uniformly mixed so that It is to increase the spontaneous ignition rate by high temperature and high pressure compression.

이상에서 설명한 바와같이 본 발명은 흡기매니폴드상에 일정양의 연료를 분사하는 제 1 인젝터를 설치하여 공기와 미량의 연료가 예혼합되도록 하고, 연소실의 중앙 상단에 직접분사식 제 2 인젝터를 설치하여 연소실 내에서 고온, 고압으로 압축된 상태로 존재하는 혼합기에 일정양의 연료를 분사하여 자연 착화되도록 하므로서, 가솔린 예혼합 압축착화 엔진 구조 엔진의 착화율을 향상시켜 연소율 향상 및 배기가스 감소의 효과를 기대할 수 있도록 한 가솔린 예혼합 압축착화 엔진 구조를 제공하는 효과를 기대할 수 있다.As described above, the present invention installs a first injector for injecting a certain amount of fuel on the intake manifold to premix air and a small amount of fuel, and installs a second injector directly at the center of the combustion chamber. By injecting a certain amount of fuel into the mixer that is compressed at high temperature and high pressure in the combustion chamber to spontaneously ignite, the ignition rate of the gasoline premixed compression ignition engine structure engine is improved to improve the combustion rate and reduce the exhaust gas. The effect of providing a gasoline premixed compression ignition engine structure can be expected.

Claims (1)

흡기밸브(5)와 배기밸브(7)가 형성된 흡기포트(4)와 배기포트(6)를 가지며, 예혼합된 가솔린 연료를 고온, 고압으로 압축시켜 자연 점화시키는 가솔린 예혼합 압축착화 엔진 구조 엔진구조에 있어서,Gasoline premixed compression ignition engine structure engine having an intake port 4 and an exhaust port 6 having an intake valve 5 and an exhaust valve 7 formed therein and compressing the premixed gasoline fuel to a high temperature and a high pressure. In structure, 흡기포트(4)의 전단계인 흡기매니폴드(8) 상에 제 1 인젝터(9)를 형성하여 흡기매니폴드(8)에서부터 공기와 연료가 균일하게 혼합되어 초희박혼합기 상태를 이루도록하고, 연소실(1) 상단에 직접분사식 제 2 인젝터(10)를 설치하여 연소실(1) 내로 유입되는 혼합기와 제 2 인젝터(10)에서 분사되는 혼합기가 텀블유동되면서 고르게 혼합되도록 한 것을 특징으로하는 가솔린 예혼합 압축착화 엔진 구조.The first injector 9 is formed on the intake manifold 8, which is the preliminary step of the intake port 4, so that air and fuel are uniformly mixed from the intake manifold 8 to form an ultra-thin mixer, and a combustion chamber ( 1) a gasoline premixed compression, characterized in that the direct injection type second injector 10 is installed on the top so that the mixer introduced into the combustion chamber 1 and the mixer injected from the second injector 10 are mixed evenly while tumbled. Ignition engine structure.
KR10-1999-0067615A 1999-12-31 1999-12-31 Apparatus of Premixed charged compression injection engine KR100375602B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130068109A (en) 2011-12-15 2013-06-25 현대자동차주식회사 Variable ignition type engine for complex combustion using diesel and gasoline, method for controlling of the same and complex combustion system using diesel and gasoline
KR20130068429A (en) 2011-12-15 2013-06-26 현대자동차주식회사 Variable ignition type engine for complex combustion using diesel and gasoline, method for controlling of the same and complex combustion system using diesel and gasoline

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040019159A (en) * 2002-08-26 2004-03-05 현대자동차주식회사 Method for controlling combustion of the hom0geneous charge compression ignition engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130068109A (en) 2011-12-15 2013-06-25 현대자동차주식회사 Variable ignition type engine for complex combustion using diesel and gasoline, method for controlling of the same and complex combustion system using diesel and gasoline
KR20130068429A (en) 2011-12-15 2013-06-26 현대자동차주식회사 Variable ignition type engine for complex combustion using diesel and gasoline, method for controlling of the same and complex combustion system using diesel and gasoline

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