KR20040040926A - mixer for an LPG engine - Google Patents

mixer for an LPG engine Download PDF

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Publication number
KR20040040926A
KR20040040926A KR1020020069280A KR20020069280A KR20040040926A KR 20040040926 A KR20040040926 A KR 20040040926A KR 1020020069280 A KR1020020069280 A KR 1020020069280A KR 20020069280 A KR20020069280 A KR 20020069280A KR 20040040926 A KR20040040926 A KR 20040040926A
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KR
South Korea
Prior art keywords
throttle valve
intake pipe
engine
air
air guide
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KR1020020069280A
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Korean (ko)
Inventor
서용교
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현대자동차주식회사
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Priority to KR1020020069280A priority Critical patent/KR20040040926A/en
Publication of KR20040040926A publication Critical patent/KR20040040926A/en

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Classifications

    • 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
    • F02M21/04—Gas-air mixing apparatus
    • 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 mixer for an LPG(Liquefied Petroleum Gas) engine is provided to prevent the cut-off of fuel caused by traveling wind in closing a throttle valve, to reduce the changes of the gas supply condition for behavior of the throttle valve, and accordingly to secure smooth operation conditions of the engine by mounting an air guide to the front of the throttle valve to change the flow direction of suction air. CONSTITUTION: A mixer for an LPG engine includes a throttle valve(1) and an air guide(7) installed to the upper part of a gas supply pipe(3) to induce the air flowing into the central part of an intake pipe(5) toward the wall of the intake pipe. The air guide is formed in a circular cone shape by facing an apex to an air cleaner and supported to the wall surface of the intake pipe by a plurality of supporting rods(9). The suction air is induced to the wall surface of the intake pipe by the air guide and supplied to the engine through a gap between the intake pipe and the throttle valve along the wall of the intake pipe.

Description

엘피지 엔진용 믹서{mixer for an LPG engine}Mixer for an LPG engine

본 발명은 엘피지(L.P.G.)를 연료로 사용하는 엔진에서 엘피지 가스를 흡입공기에 혼합시키는 믹서에 관한 것으로서, 보다 상세하게는 주행풍에 대한 안정적인 연료공급을 확보하도록 하는 기술에 관한 것이다.The present invention relates to a mixer for mixing the Elpji gas into the intake air in the engine using L.P.G. as a fuel, and more particularly to a technology for ensuring a stable fuel supply for the driving wind.

도 1은 종래의 엘피지 엔진에서 사용되고 있는 믹서의 구조를 도시한 것으로서, 가스통에서 베이퍼라이저를 통해 공급된 가스는 도시된 바와 같이 스로틀바디의 스로틀밸브(100) 상류에 연통되는 가스공급관(102)으로 나와서 흡입되는 공기와 함께 혼합되어 엔진의 흡기측으로 공급되도록 되어 있다.1 illustrates a structure of a mixer used in a conventional ELP engine, in which gas supplied through a vaporizer from a gas cylinder comes out of a gas supply pipe 102 communicating with an upstream throttle valve 100 of a throttle body as shown. It is mixed with the intake air and is supplied to the intake side of the engine.

도 1에서 알 수 있는 바와 같이 종래의 믹서는 상기 스로틀밸브(100)의 바로 앞쪽 상류에 연통되는 가스공급관(102)으로만 이루어져 있는 구조이어서, 도 1의 상태와 같이 스로틀밸브(100)가 열려 있는 경우에는 흡입되는 공기의 부압에 의해 가스공급관(102)으로 공급되는 가스가 빨려 들어가면서 혼합되어 정상적으로 엔진으로 공급될 수 있다.As can be seen in Figure 1, the conventional mixer is composed of only the gas supply pipe 102 in communication with the upstream of the front of the throttle valve 100, the throttle valve 100 is opened as shown in FIG. If there is, the gas supplied to the gas supply pipe 102 is sucked by the negative pressure of the air to be sucked in, mixed and normally supplied to the engine.

그러나, 도 2와 같이 차량이 주행중이면서도 스로틀밸브(100)가 닫혀있는 상태(내리막길 주행시 기어중립 상태 및 가속페달에서 발을 뗀 상태 등)에서는 차량의 주행에 의해 발생되는 주행풍이 도시된 바와 같이 상기 스로틀밸브(100)에 직접 부딪히면서 압력과 와류를 일으키게 되는 바, 상기와 같이 발생되는 압력 및 와류에 의해 상기 가스공급관(102)으로 공급되던 가스는 심한 경우 역류하면서, 엔진으로 공급되지 못해서 엔진이 정지하게 되는 경우가 발생하는 문제점이 있으며, 엔진이 꺼지는 정도는 아닐지라도 스로틀밸브(100)의 움직임 및 주행풍의 강도에 따라 엔진으로 유입되는 가스의 양이 크게 변화하여 원활한 엔진 작동상태를 확보하기 곤란한 문제가 있다.However, as shown in FIG. 2, in the state in which the throttle valve 100 is closed while the vehicle is running (eg, the gear neutral state when the downhill driving is carried out and the foot pedal is released from the accelerator pedal), the driving wind generated by driving of the vehicle is shown. When the pressure and vortex are generated while directly hitting the throttle valve 100, the gas supplied to the gas supply pipe 102 by the pressure and vortex generated as described above is severely flowed back, and the engine is not supplied to the engine. There is a problem in that the stop occurs, even if the engine is not turned off, the amount of gas flowing into the engine is greatly changed according to the movement of the throttle valve 100 and the intensity of the driving wind is difficult to ensure a smooth engine operating state there is a problem.

이에 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 스로틀밸브가 닫힌 상태에서 주행풍에 의한 연료의 차단 현상을 방지하고 스로틀밸브의 거동에 대한 가스 공급상태의 변화를 저감시키도록 함으로써 원활한 엔진 작동상태를 지속적으로 확보할 수 있도록 한 엘피지 엔진용 믹서를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the problems as described above, by preventing the fuel shut-off phenomenon caused by the running wind in the state in which the throttle valve is closed to reduce the change in the gas supply state to the behavior of the throttle valve The purpose is to provide a mixer for the Elpji engine that can ensure a smooth engine operating state.

도 1은 종래 기술에 의한 엘피지 엔진용 믹서의 구조를 도시한 도면으로서 주행중 스로틀밸브가 열린 상태를 도시한 도면,1 is a view showing the structure of the mixer for the LLP engine according to the prior art showing a state in which the throttle valve is opened while driving;

도 2는 도 1에서 스로틀밸브가 닫힌 상태를 도시한 도면,Figure 2 is a view showing a state in which the throttle valve is closed in Figure 1,

도 3은 본 발명에 따른 엘피지 엔진용 믹서의 구조를 도시한 도면,3 is a view showing the structure of the mixer for the LLP engine according to the present invention,

도 4는 도 3의 엘피지 엔진용 믹서가 주행중 스로틀밸브가 열린 상태에서 작용하는 것을 설명한 도면,FIG. 4 is a view illustrating that the mixer for the LLP engine of FIG. 3 operates while the throttle valve is opened while driving; FIG.

도 5는 도 3의 엘피지 엔진용 믹서가 주행중 스로틀밸브가 닫힌 상태에서 작용하는 것을 설명한 도면이다.FIG. 5 is a view for explaining that the LPG mixer of FIG. 3 operates while the throttle valve is closed while driving; FIG.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 스로틀밸브3; 가스공급관One; Throttle valve 3; Gas supply pipe

5; 흡기관7; 에어가이드5; Intake pipe 7; Air guide

9; 지지로드9; Support rod

상기한 바와 같은 목적을 달성하기 위한 본 발명 엘피지 엔진용 믹서는 스로틀밸브와 가스공급관의 상류측에 설치되어 흡기관의 중앙부로 유입되는 공기의 흐름을 흡기관의 벽면으로 유도하도록 설치된 에어가이드를 포함하여 구성된 것을 특징으로 한다.In order to achieve the object as described above, the present invention is an elbow engine mixer comprises an air guide installed on the upstream side of the throttle valve and the gas supply pipe to guide the flow of air flowing into the central portion of the intake pipe to the wall surface of the intake pipe. Characterized in that configured.

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

도 3은 본 발명에 따른 엘피지 엔진용 믹서의 구조가 도시된 것으로서, 주요한 구성은 스로틀밸브(1)와 가스공급관(3)의 상류측에 설치되어 흡기관(5)의 중앙부로 유입되는 공기의 흐름을 흡기관(5)의 벽면으로 유도하도록 설치된 에어가이드(7)이다.Figure 3 shows the structure of the mixer for the LLP engine according to the present invention, the main configuration is installed on the upstream side of the throttle valve 1 and the gas supply pipe (3) of the air flowing into the central portion of the intake pipe (5) It is an air guide (7) installed to direct the flow to the wall surface of the intake pipe (5).

상기 에어가이드(7)는 꼭지점이 에어클리너쪽을 향하도록 설치되는 원뿔형상으로 형성하여, 다수의 지지로드(9)에 의해 흡기관(5)의 벽면에 지지도록 하였으며, 물론 상기 지지로드(9)는 흡입되는 공기의 저항을 최소화할 수 있으면서도 상기 에어가이드(7)를 적절한 강도로 지지할 수 있는 재질 및 형상으로 설치한다.The air guide 7 is formed in a conical shape where the vertex is installed toward the air cleaner, so as to be supported on the wall surface of the intake pipe 5 by a plurality of support rods 9, and of course the support rods 9 ) Is installed in a material and shape that can minimize the resistance of the air to be sucked, while supporting the air guide (7) with an appropriate strength.

특히, 상기 에어가이드(7)가 흡입공기의 유동방향을 바꿀 때, 그 흡입공기의 유동이 가스공급관(3)의 출구 상류측에서 흡기관(5)의 벽면에 부딪히도록 함으로써, 에어가이드(7)에 의해 유도되는 흡입공기 자체가 가스공급관(3)의 출구를 향해 직접 유도되지는 않도록 한다.In particular, when the air guide 7 changes the flow direction of the intake air, the air guide 7 causes the flow of the intake air to impinge on the wall surface of the intake pipe 5 on the upstream side of the outlet of the gas supply pipe 3. The suction air induced by 7) itself is not to be directly directed toward the outlet of the gas supply pipe (3).

즉, 에어가이드(7)에 의해 방향이 바뀐 흡입공기가 흡기관(5)의 벽면으로 유도되어 벽면을 타고 이동하면서 가스공급관(3)으로 공급되는 가스와 혼합되어 스로틀밸브(1)와 흡기관(5)의 틈새를 통해 엔진쪽으로 공급되도록 한 것이다.That is, the intake air whose direction is changed by the air guide (7) is guided to the wall surface of the intake pipe (5) and mixed with the gas supplied to the gas supply pipe (3) while moving on the wall surface so that the throttle valve (1) and the intake pipe It is to be supplied to the engine through the gap in (5).

이와 같은 작동상태를 도 4와 도 5를 통해 살펴보면, 도 4는 스로틀밸브(1)가 개방되어 있는 상태로서, 흡입되는 공기는 상기 에어가이드(7)를 통과하여 가스공급관(3)으로부터의 가스와 함께 적절히 혼합되어 엔진으로 공급되는 바, 종래와 크게 다르지 않은 작동상태를 가지게 된다.4 and 5, the operation state of the throttle valve (1) is opened, the intake air passes through the air guide (7) and the gas from the gas supply pipe (3) And properly mixed with and supplied to the engine, the operating state is not significantly different from the conventional one.

특히, 상기 에어가이드(7)는 흡입되는 공기의 유동저항을 최소화할 수 있도록 원뿔형으로 형성되어 있고, 이러한 에어가이드(7)의 스로틀밸브(1)에 대한 투영면은 스로틀밸브(1)의 범위를 거의 벋어나지 않으므로 흡입공기의 흡기효율이 크게 저하되지 않는다.In particular, the air guide 7 is formed in a conical shape to minimize the flow resistance of the air sucked, the projection surface of the air guide 7 to the throttle valve (1) is the range of the throttle valve (1) Since it hardly comes off, the intake efficiency of the intake air is not significantly reduced.

한편, 도 5의 상태는 스로틀밸브(1)는 닫힌 상태에서 주행풍이 강하게 유입되는 상태로서, 상기 흡입공기는 에어가이드(7)에 의해서 흡기관(5)의 벽면으로 유도되어 궁극적으로 흡기관(5)의 벽면을 타고 흡기관(5)과 스로틀밸브(1) 사이에 남아 있는 작은 틈새를 통해 엔진으로 공급되게 된다.On the other hand, the state of Figure 5 is a state in which the driving wind is strongly introduced in the throttle valve (1) is closed, the intake air is guided to the wall surface of the intake pipe (5) by the air guide (7) and ultimately the intake pipe ( The wall surface of 5) is supplied to the engine through a small gap remaining between the intake pipe 5 and the throttle valve 1.

이와 같은 과정에서는 종래와 같이 스로틀밸브(1)에 바로 부딪혀서 발생되던 와류 및 압력이 발생하지 않고 흡기관(5)의 벽면을 타고 빠르게 유동하는 흡입공기에 의해 형성되는 부압에 의해 원활하게 가스공급관(1)으로부터 가스가 공급되므로, 엔진에는 항상 적절한 연료가 공급되는 상태가 확보되어 엔진이 꺼지는 현상을 방지하게 된다.In this process, the gas supply pipe is smoothly formed by the negative pressure formed by the intake air flowing rapidly through the wall surface of the intake pipe 5 without generating the vortex and pressure generated by directly hitting the throttle valve 1 as in the prior art. Since the gas is supplied from 1), the engine is always supplied with a suitable fuel to prevent the engine from turning off.

아울러, 상기한 바와 같은 에어가이드(7)는 스로틀밸브(1)가 완전히 닫히지 않은 경우에도 상기한 바와 같이 흡입되는 공기가 직접적으로 강한 압력으로 스로틀밸브(1)에 부딪혀서 불필요한 복잡한 유동으로 공급되는 가스에 영향을 주는 일이 발생하지 않도록 하므로, 스로틀밸브(1)의 거동에 대한 가스공급상태의 변화가 크게 저감되도록 한다.In addition, the air guide 7 as described above is a gas that is supplied as an unnecessary complicated flow by hitting the throttle valve 1 with a strong pressure directly, even if the air sucked as described above, even when the throttle valve 1 is not completely closed Since it does not occur to affect, the change of the gas supply state with respect to the behavior of the throttle valve (1) is greatly reduced.

이상과 같이 본 발명에 의하면, 스로틀밸브의 전방에 위치하여 흡입공기의 유동방향을 변화시키는 에어가이드를 제공함으로써, 스로틀밸브가 닫힌 상태에서 주행풍에 의한 연료의 차단 현상을 방지하고 스로틀밸브의 거동에 대한 가스 공급상태의 변화를 저감시키도록 하여 항상 원활한 엔진 작동상태를 확보한다.According to the present invention as described above, by providing an air guide that is located in front of the throttle valve to change the flow direction of the intake air, to prevent the blocking of fuel due to the running wind in the state that the throttle valve is closed and the behavior of the throttle valve It is possible to reduce the change in the gas supply state to ensure a smooth engine operating state at all times.

Claims (2)

스로틀밸브와 가스공급관의 상류측에 설치되어 흡기관의 중앙부로 유입되는 공기의 흐름을 흡기관의 벽면으로 유도하도록 설치된 에어가이드를 포함하여 구성된 것을 특징으로 하는 엘피지 엔진용 믹서.And an air guide installed at an upstream side of the throttle valve and the gas supply pipe, the air guide installed to guide the flow of air flowing into the central portion of the intake pipe to the wall surface of the intake pipe. 제1항에 있어서, 상기 에어가이드는The method of claim 1, wherein the air guide 꼭지점이 에어클리너쪽을 향하도록 설치되는 원뿔형상을 가진 것을 특징으로 하는 엘피지 엔진용 믹서.A mixer for an LLP engine, wherein the vertex has a conical shape installed to face the air cleaner.
KR1020020069280A 2002-11-08 2002-11-08 mixer for an LPG engine KR20040040926A (en)

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US8746965B2 (en) 2007-09-07 2014-06-10 Turbulent Energy, Llc Method of dynamic mixing of fluids
US8844495B2 (en) 2009-08-21 2014-09-30 Tubulent Energy, LLC Engine with integrated mixing technology
US8871090B2 (en) 2007-09-25 2014-10-28 Turbulent Energy, Llc Foaming of liquids
US9144774B2 (en) 2009-09-22 2015-09-29 Turbulent Energy, Llc Fluid mixer with internal vortex
US9310076B2 (en) 2007-09-07 2016-04-12 Turbulent Energy Llc Emulsion, apparatus, system and method for dynamic preparation
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JPS546415U (en) * 1977-06-16 1979-01-17
JPH02112959A (en) * 1988-10-21 1990-04-25 Matsushita Electric Ind Co Ltd Thermal head
JPH0630462A (en) * 1992-07-08 1994-02-04 Fujitsu Ten Ltd Operation checking device for mobile body radio set

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JPS5246224A (en) * 1975-07-25 1977-04-12 Erufu Union Improvement device for carburettor for internal combustion engine
JPS546415U (en) * 1977-06-16 1979-01-17
JPH02112959A (en) * 1988-10-21 1990-04-25 Matsushita Electric Ind Co Ltd Thermal head
JPH0630462A (en) * 1992-07-08 1994-02-04 Fujitsu Ten Ltd Operation checking device for mobile body radio set

Cited By (10)

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Publication number Priority date Publication date Assignee Title
US8746965B2 (en) 2007-09-07 2014-06-10 Turbulent Energy, Llc Method of dynamic mixing of fluids
US9310076B2 (en) 2007-09-07 2016-04-12 Turbulent Energy Llc Emulsion, apparatus, system and method for dynamic preparation
US9708185B2 (en) 2007-09-07 2017-07-18 Turbulent Energy, Llc Device for producing a gaseous fuel composite and system of production thereof
US8871090B2 (en) 2007-09-25 2014-10-28 Turbulent Energy, Llc Foaming of liquids
US9399200B2 (en) 2007-09-25 2016-07-26 Turbulent Energy, Llc Foaming of liquids
US8715378B2 (en) 2008-09-05 2014-05-06 Turbulent Energy, Llc Fluid composite, device for producing thereof and system of use
US8844495B2 (en) 2009-08-21 2014-09-30 Tubulent Energy, LLC Engine with integrated mixing technology
US9556822B2 (en) 2009-08-21 2017-01-31 Turbulent Energy Llc Engine with integrated mixing technology
US9144774B2 (en) 2009-09-22 2015-09-29 Turbulent Energy, Llc Fluid mixer with internal vortex
US9400107B2 (en) 2010-08-18 2016-07-26 Turbulent Energy, Llc Fluid composite, device for producing thereof and system of use

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