KR200156339Y1 - Lean-burn system for engine - Google Patents
Lean-burn system for engine Download PDFInfo
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- KR200156339Y1 KR200156339Y1 KR2019940038721U KR19940038721U KR200156339Y1 KR 200156339 Y1 KR200156339 Y1 KR 200156339Y1 KR 2019940038721 U KR2019940038721 U KR 2019940038721U KR 19940038721 U KR19940038721 U KR 19940038721U KR 200156339 Y1 KR200156339 Y1 KR 200156339Y1
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- fuel
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- injected
- premixed
- combustion chamber
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Classifications
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- 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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/1023—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s)
- F02B19/1028—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber and cylinder having both intake ports or valves, e.g. HONDS CVCC
- F02B19/1061—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber and cylinder having both intake ports or valves, e.g. HONDS CVCC with residual gas chamber, e.g. containing spark plug
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- 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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/1023—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s)
- F02B19/1028—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber and cylinder having both intake ports or valves, e.g. HONDS CVCC
- F02B19/1057—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber and cylinder having both intake ports or valves, e.g. HONDS CVCC with fuel injectors disposed upstream of intake valves
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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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
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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)
Abstract
본 고안의 목적은 연소실에 부연실을 두어 A/F 14.5 부근에서 예혼합된 혼합기를 가스인젝터로 직접분사하게 하므로서 연소실내의 젖음현상을 방지하여 희박연소 효과가 고양되도록 한 엔진의 린번장치를 제공하는데 있다.An object of the present invention is to provide a lean burn apparatus of an engine in which a combustion chamber is placed in a combustion chamber so that the premixed mixer is sprayed directly with a gas injector in the vicinity of A / F 14.5, thereby preventing the wetting phenomenon in the combustion chamber, thereby improving the lean burn effect. It is.
이를 실현하기 위한 본 고안은 흡기포트상에 설치되어 미량의 연료를 분사하도록 하는 주인젝터와, 이 주인젝터에 의해 연료가 분사되는 연소실의 상측에 점화플러그가 설치되면서 예혼합된 혼합기가 분사되도록 소정의 공간을 형성한 부연소실과, 이 부연소실에 전자제어장치의 신호에 의해 예혼합된 연료를 분사하도록 설치된 가스인젝터와, 이 가스인젝터가 연통 연결되면서 전자제어장치의 신호로 부인젝터를 통해 연료가 분사되도록 하면서 일측에 설치된 에어펌프로 펌핑되는 에어가 일정압에 이르렀을때 첵크벨브가 개구되어 에어와 연료가 미리 혼합되도록 한 예혼합실과, 이 예혼합실의 측부에 인가된 전원에 의해 예혼합실을 히팅하여 연료의 기화를 촉진하도록 설치된 히터를 포함하여 이루어지는 엔진의 린번장치를 특징으로 한다.The present invention for realizing this is provided such that the main injector is installed on the intake port to inject a small amount of fuel, and the premixed mixer is injected while the spark plug is installed on the upper side of the combustion chamber where the fuel is injected by the main injector. The subcombustion chamber which forms the space of the gas, the gas injector which is installed to inject the premixed fuel by the signal of the electronic control device into this subcombustion chamber, and this gas injector is connected, and the fuel is supplied through the denial injector through the signal of the electronic control device. When the air pumped by the air pump installed on one side reaches a predetermined pressure while the fuel is injected, the premixed chamber is opened so that the air and fuel are premixed, and the power is applied to the side of the premixed chamber. A lean burn apparatus of an engine comprising a heater installed to heat the mixing chamber to promote vaporization of fuel.
Description
제1도는 본 고안에 따른 엔진의 린번장치를 도시한 도면.1 is a view showing a lean burn apparatus of the engine according to the present invention.
제2도는 종래기술에 따른 엔진의 린번장치를 도시한 도면.2 is a view showing a lean burn apparatus of the engine according to the prior art.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 흡기포트 12 : 주인젝터11: intake port 12: the main ejector
13 : 연소실 14 : 점화플러그13 combustion chamber 14 spark plug
15 : 부연소실 16 : 전자제어장치15: subcombustion chamber 16: electronic control device
17 : 가스인젝터 18 : 호오스17 gas injector 18 hose
19 : 예혼합실 21 : 에어펌프19: pre-mix room 21: air pump
22 : 첵크밸브 23 : 인젝터22: check valve 23: injector
[고안의 분야][Field of design]
본 고안은 엔진의 린번장치에 관한 것으로서, 더욱 상세하게는 연소실에 부연실을 두어 A/F 14.5 부근에서 예혼합된 혼합기를 가스인젝터로 직접분사하게 하므로서 연소실내의 젖음현상을 방지하여 희박연속 효과가 고양되도록 한 엔진의 린번장치에 관한 것이다.The present invention relates to a lean burn apparatus of an engine, and more particularly, by placing a secondary combustion chamber in a combustion chamber to prevent the wetting phenomenon in the combustion chamber by directly injecting a premixed mixer in the vicinity of A / F 14.5 into a gas injector. It relates to a lean burn apparatus of an engine which is to be lifted.
[종래기술][Private Technology]
일반적으로 린번엔진이란 종래의 일반 가솔린 엔진이 이론 공연비를 A/F = 14.7로 제어하고 있는 반면에 이론 공연비를 최대 A/F = 21로 제어하여 최소의 연비로 최대의 엔진출력을 얻을 수 있도록 제어되는 엔진이다.In general, a lean burn engine is a conventional gasoline engine that controls the theoretical air-fuel ratio to A / F = 14.7, while controlling the theoretical air-fuel ratio to the maximum A / F = 21 to obtain the maximum engine output with the lowest fuel economy. It is an engine.
상기한 공연비는 연료와 공기의 혼합비를 말한다. 혼합기중의 연료를 완전히 연소하기 위하여 필요한 공기량과 연료량의 비를 이론 공연비라고 하며, 폭발시 연소온도는 이론 공연비보다 약간 진한 상태에서 최고에 이르며, 보다 진하거나 희박해도 화염온도는 저하되게 된다.The air-fuel ratio described above refers to a mixture ratio of fuel and air. The ratio of the amount of air and fuel required to completely burn the fuel in the mixer is called the theoretical air-fuel ratio, and the explosion temperature at the time of explosion reaches its maximum in a slightly darker state than the theoretical air-fuel ratio, and the flame temperature is lowered even if it is darker or thinner.
또한 화염속도는 화염온도가 최고에 이르는 공연비보다 더 낮은 공연비에서 최대가 되며, 그것보다 진하거나 희박해도 화염속도는 느려지게 되는데, 이 화염속도가 빠를 수록 연소압력은 높아지고 엔진출력도 증가하게 된다.In addition, the flame speed is maximized at a lower air-fuel ratio than the air-fuel ratio at the highest flame temperature, and even slower or thinner, the flame speed is slowed down. The higher the flame speed, the higher the combustion pressure and the higher the engine power.
이에 따라 환경오염의 증가로 각국의 배기가스 규제가 강화되기 때문에 적은 연비로 최대의 엔진출력을 얻고자 린번엔진이 개발되어 사용되고 있다.As a result, the emission regulations of each country are strengthened due to the increase of environmental pollution, and lean burn engines have been developed and used to obtain the maximum engine output with low fuel consumption.
제2도는 종래의 엔진의 린번장치를 도시한 도면으로, 연료분사인젝터(1)에 의해 분사되는 혼합기가 연소실(2)로 공급될때 스월(3)이 발생하는데, 이때 흡기포트(4)와, 연소실(2)의 측벽(5)에 연료가 맺히게 되는 웨팅(WETTING)현상(W)이 발생하고 있다.2 is a view illustrating a lean burn apparatus of a conventional engine, in which a swirl 3 is generated when a mixer injected by the fuel injection injector 1 is supplied to the combustion chamber 2, wherein the intake port 4 and Wetting phenomenon W occurs in which fuel is formed on the side wall 5 of the combustion chamber 2.
상기한 린번장치(6)는 흡기포트(4)의 스월(3)은 흡기유동 개선으로 화염전파속도를 증대시키고, 분사연료를 가급적 점화플러그(7) 주위로 모아주어 A/F = 14.5의 가연 혼합기를 점화플러그(7) 주위로 공급하게 한다.In the above-described lean burn apparatus 6, the swirl 3 of the intake port 4 increases the flame propagation speed by improving the intake air flow, and collects the injected fuel around the ignition plug 7 as much as possible, with a flammability of A / F = 14.5. Allow the mixer to feed around the spark plug (7).
상기한 이유로 실제 분사연료 공기비가 20이상이 되어도 연소실내에서 점화가 가능하게 하는데, 그러나 점화플러그 주위로 모아주는 성층화는 무수한 실험이 반복 행해져야 하고, 또 실험이 반복하여 행하여 지더라도 실험적 규명이 어려운 문제점이 있다.For the above reasons, it is possible to ignite in the combustion chamber even if the actual injection fuel air ratio is 20 or more.However, stratification that is collected around the spark plug has to be repeated innumerable experiments, and even if the experiments are repeated, it is difficult to identify the experiment. There is a problem.
또한, 종래의 린번 엔진은 최소의 연비로 인하여 대기오염을 최소화 할 수 있으나, 주행조건이 특정조건에 달하게 되면 이론 공연비를 14.7에서 21로 변화시킴으로서, 갑작스런 공연비 변화로 인하여 심한 토크변화가 발생하게 되며, 갑작스런 토크변화로 인하여 운전성이 나빠지는 문제점이 발생한다.In addition, the conventional lean burn engine can minimize the air pollution due to the minimum fuel consumption, but when the running condition reaches a certain condition by changing the theoretical air-fuel ratio from 14.7 to 21, a severe torque change occurs due to sudden air-fuel ratio change. As a result, a sudden change in torque causes a problem of poor operability.
[고안의 요약]Summary of the proposal
본 고안의 목적은 연소실에 부연실을 두어 A/F 14.5 부근에서 예혼합된 혼합기를 가스인젝터로 직접분사하게 하므로서 연소실내의 젖음현상을 방지하여 희박연소 효과가 고양되도록 한 엔진의 린번장치를 제공하는데 있다.An object of the present invention is to provide a lean burn apparatus of an engine in which a combustion chamber is placed in a combustion chamber so that the premixed mixer is sprayed directly with a gas injector in the vicinity of A / F 14.5, thereby preventing the wetting phenomenon in the combustion chamber, thereby improving the lean burn effect. It is.
이를 실현하기 위한 본 고안은 흡기포트상에 설치되어 미량의 연료를 분사하도록 하는 주인젝터와, 이 주인젝터에 의해 연료가 분사되는 연소실의 상측에 점화플러그가 설치되면서 예혼합된 혼합기가 분사되도록 소정의 공간을 형성한 부연소실과, 이 부연소실에 전자제어장치의 신호에 의해 예혼합된 연료를 분사하도록 설치된 가스인젝터와, 이 가스인젝터가 연통 연결되면서 전자제어장치의 신호로 부인젝터를 통해 연료가 분사되도록 하면서 일측에 설치된 에어펌프로 펌핑되는 에어가 일정압에 이르렀을때 첵크벨브가 개구되어 에어와 연료가 미리 혼합되도록 한 예혼합실과, 이 예혼합실의 측부에 인가된 전원에 의해 예혼합실을 히팅하여 연료의 기화를 촉진하도록 설치된 히터를 포함하여 이루어지는 엔진의 린번장치를 특징으로 한다.The present invention for realizing this is provided such that the main injector is installed on the intake port to inject a small amount of fuel, and the premixed mixer is injected while the spark plug is installed on the upper side of the combustion chamber where the fuel is injected by the main injector. The subcombustion chamber which forms the space of the gas, the gas injector which is installed to inject the premixed fuel by the signal of the electronic control device into this subcombustion chamber, and this gas injector is connected, and the fuel is supplied through the denial injector through the signal of the electronic control device. When the air pumped by the air pump installed on one side reaches a predetermined pressure while the fuel is injected, the premixed chamber is opened so that the air and fuel are premixed, and the power is applied to the side of the premixed chamber. A lean burn apparatus of an engine comprising a heater installed to heat the mixing chamber to promote vaporization of fuel.
상기한 연소실의 상측에 부연소실을 형성한 후 예혼합실에서 미리 공기와 연료가 혼합시켜 미립화 한 미연소연료를 가스인젝터로 하여금 부연소실에 분사하도록 하므로서 주인젝터로 분사된 미량의 연료가 스월을 발생하여 점화력의 향상과 폭발력의 확산이 향상되므로서 완전연소가 이루어지도록 한다.After forming the sub-combustion chamber above the combustion chamber, a small amount of fuel injected into the main injector swirls the uninjected fuel, which is previously mixed with air and fuel in the pre-mixing chamber, to inject the gas injector into the sub-combustion chamber. It is generated so that the ignition power is improved and the spread of the explosive power is improved so that complete combustion is achieved.
[실시예]EXAMPLE
이하, 본 고안의 바람직한 일실시예를 첨부한 도면에 의하여 더욱 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention will be described in more detail.
제1도는 본 고안에 따른 린번장치를 도시한 도면으로, 부호(10)은 린번장치를 지칭한다.1 is a view showing a lean burn apparatus according to the present invention, 10 denotes a lean burn device.
상기한 린번장치(10)는 흡기포트(11)상에 주인젝터(12)를 설치하여 미량의 연료를 분사하도록 하고 있다.The lean burn apparatus 10 is provided with a main injector 12 on the intake port 11 to inject a small amount of fuel.
상기한 주인젝터(12)에 의해 연료가 분사되는 연소실(13)의 상측에 점화플러그(14)가 설치되면서 미리 혼합된 혼합기가 분사되는 부연소실(15)이 소정의 공간을 형성하도록 하고 있다.While the spark plug 14 is installed above the combustion chamber 13 through which the fuel is injected by the main injector 12, the sub-combustion chamber 15 into which a premixed mixer is injected forms a predetermined space.
상기한 부연소실(15)에는 전자제어장치(16)의 신호에 의해 작동하는 가스인젝터(17)가 설치되어 있어 예혼합된 연료를 분사하도록 하고 있다.The subcombustion chamber 15 is provided with a gas injector 17 which is operated by the signal of the electronic control device 16 to inject the premixed fuel.
상기한 가스인젝터(17)는 전자제어장치(16)의 신호에 의해 미립화된 미연소연료를 분사하게 되는데, 이 미연소연료는 가스인젝터(17)와 호오스(18)로 연통되는 예혼합실(19)에서 혼합하게 되어 있다.The gas injector 17 injects the unburned fuel atomized by the signal of the electronic controller 16, and the unburned fuel is pre-mixed in communication with the gas injector 17 and the hose 18 ( In 19).
상기한 예혼합실(19)에는 공기가 공급될 수 있도록 공기통로(20)에 에어펌프(21)가 설치되어 있고, 이 에어펌프(21)에 의해 공급되는 공기가 예혼합실(19)의 공기압이 저하될때 개구되게 되는 첵크밸브(22)를 설치하고 있다.The premixing chamber 19 is provided with an air pump 21 in the air passage 20 so that air can be supplied, and the air supplied by the air pump 21 is supplied to the premixing chamber 19. The check valve 22 which opens when air pressure falls is provided.
상기한 첵크밸브(22)에 의해 예혼합실(19)내의 공기압이 항상 일정하게 유지될때, 전자제어장치(16)의 신호에 의해 미연소연료가 분사되도록 하는 부인젝터(23)를 설치하고 있다.When the air pressure in the pre-mixing chamber 19 is always kept constant by the check valve 22 described above, a non-combustor 23 is provided so that unburned fuel is injected by the signal of the electronic controller 16. .
상기한 바와 같이 이루어지는 예혼합실(19)에 충진된 연료와 공기가 혼합하여 미립화가 이루어지도록 예혼합실(19)의 일측에 히터(24)를 설치하여 가열 하여줌으로서 미립화된 연료가 가스인젝터(17)에 의해 부연소실(15)에 분사되도록 하여 점화력을 향상시키면서 화염의 확산이 이루어지도록 하고 있다.The atomized fuel is injected into the gas injector by installing and heating a heater 24 on one side of the premixing chamber 19 so that the fuel and air filled in the premixing chamber 19 made as described above are atomized. (17) is injected into the sub-combustion chamber 15 so that the flame spreads while improving the ignition force.
이와 같이 이루어지는 본 고안의 작용은 흡기포트(11)상의 주인젝터(12)에서 미량의 연료가 연소실(13)에 분사되면 공기는 화살표(S)처럼 스월하게 되어 연소실(13)내에서 확산이 되면서 연료는 점화플러그(14)의 아래에 모이게 된다.The action of the present invention made as described above is that when a small amount of fuel is injected into the combustion chamber 13 in the main injector 12 on the intake port 11, the air is swirled like an arrow S, and is diffused in the combustion chamber 13. The fuel collects under the spark plug 14.
이때 에어펌프(21)에 공기가 공급된 공기는 개구된 첵크밸브(22)를 거쳐 예혼합실(19)에 충진되게 될때 전자제어장치(16)에 의해 예혼합실(19)에 미연소된 연료를 부인젝터(23)로 하여금 분사하도록 하여 혼합을 시킨다.At this time, when the air supplied to the air pump 21 is filled in the premixing chamber 19 via the open check valve 22, the air is unburned in the premixing chamber 19 by the electronic controller 16. The fuel is caused to mix by causing the refractory injector 23 to inject.
상기한 예혼합실(19)에서 혼합된 공기와 연료가 부연소실(15)에서 점화력과 화염의 확산이 유도가 용이하도록 히터(24)를 이용 가열하여 무화가 되도록 한다.The air and fuel mixed in the pre-mixing chamber 19 are heated to be atomized by using the heater 24 to facilitate induction of ignition force and flame in the sub-combustion chamber 15.
상기한 예혼합실(19)의 미연소된 연료가 무화가 되면 전자제어장치(16)는 호오스(18)로 연통되는 가스인젝터(17)를 통해 부연소실(15)에 분사한다.When the unburned fuel of the pre-mixing chamber 19 is atomized, the electronic controller 16 injects the sub-combustion chamber 15 through the gas injector 17 communicating with the hose 18.
이에 따라 연소실(13)에 주인젝터(12)에 의해 분사된 미량의 연료는 부연소실(15)에 분사된 연료는 점화플러그(14)에 의해 점호가 되는데, 이 부연소실(15)에 분사된 연료는 무화성이 뛰어나 점화력의 향상을 가져오고 화염의 확산을 유도하기 때문에 주인젝터(12)에 의해 분사된 미량연료가 희박하여도 완전 연소성을 향상하게 된다.Accordingly, a small amount of fuel injected into the combustion chamber 13 by the main injector 12 is fired by the spark plug 14 to the fuel injected into the subcombustion chamber 15, which is injected into the subcombustion chamber 15. Since the fuel is excellent in inflammability, the ignition power is improved, and the flame is diffused, the flammable fuel injected by the main injector 12 is improved even if the fuel is sparse.
이러한 본 고안은 연소실의 부연소실에 예혼합실에서 공기와 연료를 미리 혼합하여 미립화 시킨 미연소연료를 분사하도록 하므로서 주인젝터로 분사된 미량의 연료가 연소실의 측면에 붙게 되는 젖음현상(wetting)이 해소되면서 스월에어에 의해 점화력의 향상과 폭발력의 확산이 향상되어 완전연소가 이루어지는 유용한 고안이다.The present invention is designed to inject the unburned fuel atomized by pre-mixing air and fuel in the premixing chamber into the combustion chamber sub-combustion chamber, so that the wetting phenomenon that a small amount of fuel injected by the main injector adheres to the side of the combustion chamber As it is solved, the swirling air improves the ignition power and the spread of the explosive power, which is a useful design that complete combustion occurs.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940038721U KR200156339Y1 (en) | 1994-12-30 | 1994-12-30 | Lean-burn system for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940038721U KR200156339Y1 (en) | 1994-12-30 | 1994-12-30 | Lean-burn system for engine |
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| Publication Number | Publication Date |
|---|---|
| KR960023345U KR960023345U (en) | 1996-07-20 |
| KR200156339Y1 true KR200156339Y1 (en) | 1999-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019940038721U KR200156339Y1 (en) | 1994-12-30 | 1994-12-30 | Lean-burn system for engine |
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| Country | Link |
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| KR (1) | KR200156339Y1 (en) |
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1994
- 1994-12-30 KR KR2019940038721U patent/KR200156339Y1/en not_active IP Right Cessation
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| KR960023345U (en) | 1996-07-20 |
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