KR20160077507A - Start improving system with low temperature for heavy construction equipment - Google Patents

Start improving system with low temperature for heavy construction equipment Download PDF

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Publication number
KR20160077507A
KR20160077507A KR1020140187256A KR20140187256A KR20160077507A KR 20160077507 A KR20160077507 A KR 20160077507A KR 1020140187256 A KR1020140187256 A KR 1020140187256A KR 20140187256 A KR20140187256 A KR 20140187256A KR 20160077507 A KR20160077507 A KR 20160077507A
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fuel
supply line
diesel fuel
line
engine
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KR1020140187256A
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Korean (ko)
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노병철
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현대중공업 주식회사
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Publication of KR20160077507A publication Critical patent/KR20160077507A/en

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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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • 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
    • Y02T10/40—Engine management systems

Abstract

The present invention relates to a system for improving startability of heavy construction equipment at low temperatures, and more specifically, relates to a system for improving startability of heavy construction equipment at low temperatures, comprising an engine, a fuel tank, a fuel filter, a first supply line, a second supply line and a discharge line. The fuel tank has a closed shape, a predetermined reception space formed in the interior thereof, a fuel injection part formed on an upper part of one side thereof to allow diesel fuel to be introduced, and an undercurrent of diesel fuel in the interior. The fuel filter filters foreign substances included in the diesel fuel of the undercurrent in the fuel tank. The first supply line transfers the diesel fuel of the undercurrent in the fuel tank to the fuel filter. The second supply line supplies diesel fuel discharged through the fuel filter to the engine. The discharge line transfers the diesel fuel discharged through the engine to the fuel tank. The system for improving startability of heavy construction equipment at low temperatures further comprises a branched line branched from the discharge line to allow diesel fuel to be re-supplied to one of the first supply line or the second supply line. According to the present invention, a fault in starting due to freezing is prevented to improve reliability of operational performance of heavy construction equipment. Moreover, discontinuation of work is prevented to secure continuous operation.

Description

건설중장비의 저온 시동성 개선 시스템{Start improving system with low temperature for heavy construction equipment}BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-temperature start-

본 발명은 건설중장비의 저온 시동성 개선 시스템에 관한 것으로, 특히 겨울철 초기 시동성을 개선할 수 있는 건설중장비의 저온 시동성 개선 시스템에 관한 것이다.The present invention relates to a low-temperature startability improvement system for heavy construction equipment, and more particularly, to a low-temperature startability improvement system for a heavy construction equipment capable of improving initial startability during winter.

일반적으로 건설중장비의 디젤 엔진에서 주로 사용되는 연료인 경유는 연료 특성상 겨울철 외부 기온이 약 -15℃ 이하로 내려갈 경우, 연료 내의 결빙현상으로 인한 파라핀(paraffin)계의 왁스(wax)성분이 석출되며, 그에 따라 연료의 유동성이 상온에 비해 크게 저하된다.In general, light oil, which is mainly used in diesel engines of construction heavy equipment, is paraffin wax precipitated due to icing in the fuel when the outside temperature of winter falls below about -15 ° C due to fuel characteristics , Whereby the flowability of the fuel is greatly lowered compared with the normal temperature.

또한, 경유에서 파라핀 왁스성분이 석출된 상태에서 디젤 엔진에 시동을 건 후 주행을 시작하면, 연료 중에 석출된 왁스성분이 엔진으로 흡입되는 과정에서 연료필터를 지나면서 연료필터 내의 필터 여지를 막게 되고, 이에 따라 건설중장비의 엔진 시동 불량, 시동 꺼짐 및 백색연기 발생 등의 특성이 나타나는 것으로 알려져 있다.In addition, when the diesel engine is started after the paraffin wax component is precipitated in the diesel oil and the running is started, the wax component precipitated in the fuel is sucked into the engine to block the filter filter in the fuel filter through the fuel filter Therefore, it is known that characteristics such as engine start failure, start-off and white smoke generation in construction heavy equipment appear.

이와 같이 건설중장비용 엔진계통에 있어서, 주요 연료로써 경유를 사용하는바, 연료필터를 거쳐 엔진에 공급되는 연료는 인젝터를 통하여 약 10 내지 20% 정도만 분사되어 연소 되고, 나머지 약 80% 이상의 연료는 연료탱크에 리턴 된다.As described above, in the engine system for construction heavy machinery, when diesel is used as the main fuel, the fuel supplied to the engine through the fuel filter is injected through the injector only by about 10 to 20%, and the remaining about 80% And returned to the fuel tank.

이는 겨울철 추운 지역에서 엔진의 초기 시동시에는 외부 기온과 연료탱크 내부의 온도차에 의해 연료탱크 내부에 수분이 생성되어 고이거나 연료에 함유된 파라핀계 왁스 성분이 결빙되는 현상이 나타나 연료공급계통에 여러 가지 문제를 발생시키고 있다.During the early start of the engine in the cold winter area, water is generated inside the fuel tank due to the external temperature and the temperature difference inside the fuel tank, and the paraffin wax component contained in the fuel is frozen, Causing problems.

대한민국 공개특허공보 제10-2006-0023463호(2006년 03월 14일 공개)Korean Patent Publication No. 10-2006-0023463 (published on Mar. 14, 2006) 대한민국 공개실용신안공보 제20-1998-042645호(1998년 09월 25일 공개)Korean Utility Model Publication No. 20-1998-042645 (published on September 25, 1998) 대한민국 등록특허공보 제10-0174843호(1999년 02월 18일 공고)Korean Patent Publication No. 10-0174843 (published on February 18, 1999)

상술한 문제점을 해결하기 위해 안출된 본 발명의 과제는, 겨울철 초기 시동성을 개선할 수 있는 건설중장비의 저온 시동성 개선 시스템을 제공하는 데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a low temperature startability improving system for a heavy construction equipment capable of improving early startability during the winter season.

상기 과제를 달성하기 위해 안출된 본 발명은, 엔진, 내부에 소정의 수용공간이 마련되며, 일측 상부에는 디젤연료가 유입되는 연료 주입부가 형성되고, 디젤연료가 내부에 저류된 밀폐형의 연료탱크, 상기 연료탱크에 저류된 디젤연료에 포함된 이물질을 거르는 연료필터, 상기 연료탱크에 저류된 디젤연료를 상기 연료필터로 이송하는 제1공급라인, 상기 연료필터를 통해 배출되는 디젤연료를 상기 엔진으로 공급하는 제2공급라인 및 상기 엔진을 통해 배출되는 디젤연료를 상기 연료탱크로 이송하는 배출라인을 포함하며, 상기 배출라인에서 분기 되어 디젤연료가 상기 제1공급라인 및 제2공급라인 중 어느 하나에 재공급되는 것을 가능하게 하는 분기라인을 더 포함하는 것을 특징으로 한다.According to an aspect of the present invention, there is provided an internal combustion engine comprising an engine, a predetermined accommodation space inside the engine, a fuel injecting portion through which diesel fuel is introduced into an upper portion of the engine, A first supply line for transferring the diesel fuel stored in the fuel tank to the fuel filter, a first supply line for supplying diesel fuel discharged through the fuel filter to the engine A second supply line for supplying diesel fuel to the fuel tank, and a discharge line for transferring diesel fuel discharged through the engine to the fuel tank, wherein the diesel fuel is branched from the discharge line, And a branching line which enables to be supplied again to the first branch line.

상기 배출라인과 분기라인 사이에 개폐밸브가 설치된 것을 특징으로 한다.And an open / close valve is provided between the discharge line and the branch line.

상기 개폐밸브는 삼방밸브이며, 상기 배출라인과 분기라인이 상기 삼방밸브에 각각 연결된 것을 특징으로 한다.The on / off valve is a three-way valve, and the discharge line and the branch line are connected to the three-way valve, respectively.

본 발명은 겨울철 동결로 인한 시동불량을 미연에 방지함으로써 건설중장비 상품성의 신뢰도를 향상시키고, 작업중 시동이 정지되는 것을 예방하여 작업의 연속성이 보장되는 효과가 있다.The present invention prevents the start failure due to freezing in winter, thereby enhancing the reliability of the construction heavy equipment commerciality and preventing the start of the operation from being stopped, thereby ensuring the continuity of the operation.

본 명세서에서 첨부되는 다음의 도면들은 본 발명의 바람직한 실시예를 예시하는 것이며, 발명의 상세한 설명과 함께 본 발명의 기술사상을 더욱 이해시키는 역할을 하는 것이므로, 본 발명은 그러한 도면에 기재된 사항에만 한정되어서 해석되어서는 아니 된다.
도 1은 본 발명의 제1실시예에 따른 건설중장비의 저온 시동성 개선 시스템을 나타낸 예시도,
도 2는 본 발명의 제2실시예에 따른 건설중장비의 저온 시동성 개선 시스템을 나타낸 예시도이다.BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, And shall not be construed as interpretation.
1 is a view showing an example of a low-temperature startability improvement system for a heavy construction equipment according to a first embodiment of the present invention.
2 is a view illustrating an example of a low-temperature startability improvement system for heavy construction equipment according to a second embodiment of the present invention.

이하, 첨부한 도면을 참조하여 본 발명에 따른 건설중장비의 저온 시동성 개선 시스템의 바람직한 실시예에 대해 상세하게 설명한다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a low-temperature startability improvement system for heavy construction equipment according to the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 제1실시예에 따른 건설중장비의 저온 시동성 개선 시스템을 나타낸 예시도이다.FIG. 1 is an exemplary view illustrating a low-temperature startability improvement system for a heavy construction equipment according to a first embodiment of the present invention.

도 1을 참조하면, 본 발명의 바람직한 제1실시예에 따른 건설중장비의 저온 시동성 개선 시스템은 엔진(E), 연료탱크(T), 연료필터(F), 제1공급라인(100), 제2공급라인(200), 배출라인(300) 및 분기라인(400)을 포함하는 구성요소로 이루어지며, 이를 상세히 설명하면 다음과 같다.Referring to FIG. 1, a low temperature startability improvement system for a heavy construction equipment according to a first preferred embodiment of the present invention includes an engine E, a fuel tank T, a fuel filter F, a first supply line 100, 2 supply line 200, a discharge line 300, and a branch line 400, and will be described in detail as follows.

상기 엔진(E)은 디젤연료를 사용하는 굴삭기와 같은 건설중장비용 엔진을 일컫는다.The engine E refers to a construction heavy-duty engine such as an excavator using diesel fuel.

상기 연료탱크(T)는 금속 또는 비금속의 재질로 이루어진 밀폐형으로서, 디젤연료가 내부에 저류되며, 굴삭기 등과 같은 건설중장비에 적용되는 연료탱크인 것이 바람직하다.The fuel tank T is preferably a fuel tank of a closed type made of a metal or a non-metal material, the fuel tank being stored in the diesel fuel and being applied to a construction heavy equipment such as an excavator.

그리고, 내부에는 소정의 수용공간이 마련되고, 일측 상부에는 디젤연료가 유입되는 소정의 연료 주입부가 형성된다.In addition, a predetermined accommodation space is provided therein, and a predetermined fuel injection portion into which diesel fuel is introduced is formed at an upper portion of one side.

또한, 상기 연료탱크(T)의 내부 수용공간에는 적어도 하나 이상의 격벽(미도시)이 설치될 수 있다.In addition, at least one partition (not shown) may be installed in the interior space of the fuel tank T.

상기 연료필터(F)는 상기 연료탱크(T)에 저류된 디젤연료가 상기 엔진(E)으로 공급되기 전에 디젤연료에 포함된 각종의 이물질과 수분 등을 거르는 역할을 한다.The fuel filter F functions to filter various foreign substances and moisture contained in the diesel fuel before the diesel fuel stored in the fuel tank T is supplied to the engine E. [

상기 제1공급라인(100)은 상기 연료탱크(T)와 상기 연료필터(F)를 연결하여 상기 연료탱크(T)에 저류된 디젤연료가 상기 제1공급라인(100)을 통해 상기 연료필터(F)로 이송된다.The first supply line 100 connects the fuel tank T and the fuel filter F so that diesel fuel stored in the fuel tank T is supplied to the fuel filter T via the first supply line 100, (F).

상기 제2공급라인(200)은 상기 연료필터(F)와 상기 엔진(E)을 연결하여 상기 연료필터(F)에서 걸러진 디젤연료가 상기 제2공급라인(200)을 통해 상기 엔진(E)으로 공급된다.The second supply line 200 connects the fuel filter F and the engine E so that the diesel fuel filtered by the fuel filter F is supplied to the engine E through the second supply line 200, .

상기 배출라인(300)은 상기 엔진(E)과 상기 연료탱크(T)를 연결하여 상기 엔진(E)에서 배출되는 디젤연료가 상기 배출라인(300)을 통해 상기 연료탱크(T)로 회수된다.The exhaust line 300 connects the engine E and the fuel tank T so that the diesel fuel discharged from the engine E is recovered to the fuel tank T through the exhaust line 300 .

상기 분기라인(400)은 상기 제1공급라인(100)과 배출라인(300)을 연결하여 상기 배출라인(300)을 통해 배출되는 디젤연료가 상기 제1공급라인(100)으로 재공급되는 것을 가능하게 한다.The branch line 400 connects the first supply line 100 and the discharge line 300 so that the diesel fuel discharged through the discharge line 300 is supplied again to the first supply line 100 .

이때, 상기 배출라인(300)과 분기라인(400) 사이에 개폐밸브(500)를 설치하는데, 상기 개폐밸브(500)는 바람직하게 삼방밸브(3-way valve)일 수 있다.At this time, an on-off valve 500 is installed between the discharge line 300 and the branch line 400. The on-off valve 500 may be a three-way valve.

즉, 상기 배출라인(300)과 분기라인(400)이 상기 삼방밸브에 각각 연결된 상태로 상기 삼방밸브를 제어함으로써 상기 배출라인(300)을 통해 배출되는 디젤연료를 선택적으로 연료탱크(T)로 배출시키거나, 상기 제1공급라인(100)으로 재공급시킬 수 있는 것이다.That is, by controlling the three-way valve in a state where the discharge line 300 and the branch line 400 are connected to the three-way valve, the diesel fuel discharged through the discharge line 300 is selectively supplied to the fuel tank T Or may be supplied to the first supply line 100 again.

이는 상기 배출라인(300)을 통해 배출되는 상대적으로 높은 온도의 디젤연료를 상기 제1공급라인(100)에 합류시킴으로써 디젤연료의 왁싱 현상을 방지하여 엔진 시동성을 개선시킬 수 있다.
This can prevent the waxing of the diesel fuel by joining the diesel fuel discharged at the relatively high temperature discharged through the discharge line 300 to the first supply line 100, thereby improving the engine startability.

도 2는 본 발명의 제2실시예에 따른 건설중장비의 저온 시동성 개선 시스템을 나타낸 예시도이다.2 is a view illustrating an example of a low-temperature startability improvement system for heavy construction equipment according to a second embodiment of the present invention.

도 2를 참조하면, 상기 분기라인(400)을 상기 제2공급라인(200)과 배출라인(300)을 연결하여 상기 배출라인(300)을 통해 배출되는 디젤연료가 상기 제2공급라인(200)으로 재공급시킨다.2, the branch line 400 is connected to the second supply line 200 and the discharge line 300 so that the diesel fuel discharged through the discharge line 300 flows into the second supply line 200 ).

이때, 상기 배출라인(300)과 분기라인(400) 사이에 개폐밸브(500)를 설치하는데, 상기 개폐밸브(500)는 바람직하게 삼방밸브일 수 있다.At this time, an on-off valve 500 is installed between the discharge line 300 and the branch line 400. The on-off valve 500 may be a three-way valve.

즉, 상기 배출라인(300)과 분기라인(400)이 상기 삼방밸브에 각각 연결된 상태로 상기 삼방밸브를 제어함으로써 상기 배출라인(300)을 통해 배출되는 디젤연료를 선택적으로 연료탱크(T)로 배출시키거나, 상기 제2공급라인(200)으로 재공급시킬 수 있는 것이다.That is, by controlling the three-way valve in a state where the discharge line 300 and the branch line 400 are connected to the three-way valve, the diesel fuel discharged through the discharge line 300 is selectively supplied to the fuel tank T Or may be supplied to the second supply line 200 again.

이는 상기 배출라인(300)을 통해 배출되는 상대적으로 높은 온도의 디젤연료를 상기 제2공급라인(200)에 합류시킴으로써 디젤연료의 왁싱 현상을 방지하여 엔진 시동성을 개선시킬 수 있다.
This can prevent the waxing of the diesel fuel by joining the diesel fuel of relatively high temperature discharged through the discharge line 300 to the second supply line 200, thereby improving the engine startability.

이상에서는 본 발명을 바람직한 실시예에 의거하여 설명하였으나, 본 발명의 기술적 사상은 이에 한정되지 아니하고 청구항에 기재된 범위 내에서 변형이나 변경 실시가 가능함은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 명백한 것이며, 그러한 변형이나 변경은 첨부된 특허청구범위에 속한다 할 것이다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And such variations and modifications are intended to fall within the scope of the appended claims.

100: 제1공급라인
200: 제2공급라인
300: 배출라인
400: 분기라인
500: 개폐밸브
E: 엔진
F: 연료필터
T: 연료탱크100: first supply line
200: second supply line
300: discharge line
400: branch line
500: opening and closing valve
E: engine
F: Fuel filter
T: Fuel tank

Claims (3)

엔진(E);
내부에 소정의 수용공간이 마련되며, 일측 상부에는 디젤연료가 유입되는 연료 주입부가 형성되고, 디젤연료가 내부에 저류된 밀폐형의 연료탱크(T);
상기 연료탱크(T)에 저류된 디젤연료에 포함된 이물질을 거르는 연료필터(F);
상기 연료탱크(T)에 저류된 디젤연료를 상기 연료필터(F)로 이송하는 제1공급라인(100);
상기 연료필터(F)를 통해 배출되는 디젤연료를 상기 엔진(E)으로 공급하는 제2공급라인(200); 및
상기 엔진(E)을 통해 배출되는 디젤연료를 상기 연료탱크(T)로 이송하는 배출라인(300)을 포함하며,
상기 배출라인(300)에서 분기 되어 디젤연료가 상기 제1공급라인(100) 및 제2공급라인(200) 중 어느 하나에 재공급되는 것을 가능하게 하는 분기라인(400)을 더 포함하는 것을 특징으로 하는 건설중장비의 저온 시동성 개선 시스템.An engine E;
A fuel tank (T) of a closed type in which a predetermined accommodation space is provided therein, a fuel injecting portion into which diesel fuel is introduced is disposed at an upper portion, and diesel fuel is stored in the fuel tank;
A fuel filter (F) for filtering foreign matters contained in the diesel fuel stored in the fuel tank (T);
A first supply line (100) for transferring diesel fuel stored in the fuel tank (T) to the fuel filter (F);
A second supply line (200) for supplying diesel fuel discharged through the fuel filter (F) to the engine (E); And
And a discharge line (300) for transferring diesel fuel discharged through the engine (E) to the fuel tank (T)
And a branch line 400 branched from the discharge line 300 to enable the diesel fuel to be supplied again to either the first supply line 100 or the second supply line 200 A low - temperature startability improvement system for heavy construction equipment. 제1항에 있어서,
상기 배출라인(300)과 분기라인(400) 사이에 개폐밸브(500)가 설치된 것을 특징으로 하는 건설중장비의 저온 시동성 개선 시스템.The method according to claim 1,
Wherein a shutoff valve (500) is installed between the discharge line (300) and the branch line (400). 제2항에 있어서,
상기 개폐밸브(500)는 삼방밸브이며, 상기 배출라인(300)과 분기라인(400)이 상기 삼방밸브에 각각 연결된 것을 특징으로 하는 건설중장비의 저온 시동성 개선 시스템.3. The method of claim 2,
Wherein the open / close valve (500) is a three-way valve, and the discharge line (300) and the branch line (400) are connected to the three-way valve.
KR1020140187256A 2014-12-23 2014-12-23 Start improving system with low temperature for heavy construction equipment KR20160077507A (en)

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Publication number Priority date Publication date Assignee Title
KR19980042645U (en) 1996-12-24 1998-09-25 김영귀 Water inflow detection device in fuel tank
KR0174843B1 (en) 1996-10-01 1999-02-18 정몽규 Device of water drain for fuel tank
KR20010100396A (en) * 2000-05-02 2001-11-14 이계안 Fuel supplier for diesel engine and control mathod thereof
JP2003176761A (en) * 2001-12-11 2003-06-27 Denso Corp Fuel injection device
KR20060023463A (en) 2004-09-09 2006-03-14 기아자동차주식회사 Water and oil separate apparatus for diesel engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0174843B1 (en) 1996-10-01 1999-02-18 정몽규 Device of water drain for fuel tank
KR19980042645U (en) 1996-12-24 1998-09-25 김영귀 Water inflow detection device in fuel tank
KR20010100396A (en) * 2000-05-02 2001-11-14 이계안 Fuel supplier for diesel engine and control mathod thereof
JP2003176761A (en) * 2001-12-11 2003-06-27 Denso Corp Fuel injection device
KR20060023463A (en) 2004-09-09 2006-03-14 기아자동차주식회사 Water and oil separate apparatus for diesel engine

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