KR20180078876A - Diesel Engine Cylinder Head Leakage Tester - Google Patents

Diesel Engine Cylinder Head Leakage Tester Download PDF

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Publication number
KR20180078876A
KR20180078876A KR1020160184122A KR20160184122A KR20180078876A KR 20180078876 A KR20180078876 A KR 20180078876A KR 1020160184122 A KR1020160184122 A KR 1020160184122A KR 20160184122 A KR20160184122 A KR 20160184122A KR 20180078876 A KR20180078876 A KR 20180078876A
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South Korea
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cylinder head
cooling water
cylinder
cylinder liner
diesel engine
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KR1020160184122A
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Korean (ko)
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이용득
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한전케이피에스 주식회사
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Publication of KR20180078876A publication Critical patent/KR20180078876A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/025—Details with respect to the testing of engines or engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

According to the present invention, a diesel engine cylinder head leakage tester comprises: a cylinder head in which a vent hole is formed; a cylinder liner coupled to a lower portion of the cylinder head to form a cooling water flow path; and a pipe coupled to one side of the cylinder liner, and in which cooling water supplied from a cooling water tank flows.

Description

디젤엔진 실린더 헤드 누설 시험장치{Diesel Engine Cylinder Head Leakage Tester}TECHNICAL FIELD [0001] The present invention relates to a diesel engine cylinder head leakage tester,

본 발명은 디젤엔진 실린더 헤드 누설 시험장치에 관한 것으로서, 더 자세하게는 실린더 헤드의 건전성 확보를 위한 누설 시험 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diesel engine cylinder head leakage test apparatus, and more particularly, to a leakage test apparatus for ensuring the soundness of a cylinder head.

일반적으로 엔진 실린더 헤드는 연소실로 형성되어 있으며 연료장치, 흡배기밸브, 캠장치 시동장치, 냉각수 통로 등 엔진 주요 부품이 설치되어 있다.Generally, the engine cylinder head is formed as a combustion chamber, and main components of the engine such as a fuel device, an intake and exhaust valve, a cam device starter, and a cooling water passage are installed.

이들 구성 부품은 그 온도가 과도하게 상승되면 열변형이 일어나거나 실린더 내벽의 유막이 파괴되어 윤활 불량현상이 일어나게 되고 이로 인한 열적 장애가 발생하게 된다.If the temperature of these components excessively increases, thermal deformation may occur or the oil film on the inner wall of the cylinder may be broken to cause a lubricating failure phenomenon, thereby causing a thermal obstacle.

상기한 엔진의 열적 장애는 연소불량, 노킹 혹은 프리 이그니션과 같은 이상연소를 일으켜서 피스톤이 용손되는 등의 중대한 손상을 줄뿐만 아니라 열효율도 저하되고, 출력도 저하하게 되는 문제점이 있다. The thermal failure of the engine causes abnormal combustion such as combustion failure, knocking, or preignition, thereby causing significant damage such as the loss of the piston, and the thermal efficiency is lowered and the output is also lowered.

따라서 온도편차로 인한 손상, 균열 문제점을 조사하기 위해 실린더 헤드하부 냉각수 통로 입구를 제작한 장비로 실링하여 공기 및 물을 충유한 다음 운전 압력으로 가압하여 주요 실링부 및 고온에 접한부분을 비눗물이나 압력이 떨어지는 현상으로 누설을 확인 하거나 비파괴검사를 이용하여 누설을 확인하였으나 실린더헤드를 완벽히 실링 시킬 수 없어 건전성 확보에 어려움이 있다.
Therefore, in order to investigate the damage and cracks caused by the temperature deviation, the inlet of the coolant passage under the cylinder head was sealed with the manufactured equipment, and the air and water were pressurized with the operating pressure to seal the main sealing portion and the high- It is difficult to secure the integrity of the cylinder head because the cylinder head can not be completely sealed even though the leakage is confirmed by checking the leakage or using the nondestructive inspection.

공개특허공보 제2001-0056313호(공개일자: 2001.07.04)Japanese Patent Application Laid-Open No. 2001-0056313 (published on July 07, 2001)

본 발명의 실시 예는 이러한 종래기술의 문제점을 해결하기 위한 것으로서, 실린더 헤드 누설시험 장비를 제작하여 사용 품 및 신품 실린더 헤드의 건전성을 확보 하고자 한다.An embodiment of the present invention is to solve the problems of the related art, and a cylinder head leakage test equipment is manufactured to secure the soundness of a used product and a new cylinder head.

이러한 목적을 달성하기 위한 본 발명의 실시 예 디젤엔진 실린더 헤드 누설 시험장치는 벤트홀이 형성된 실린더 헤드와, 상기 실린더 헤드의 하부에 결합되어 냉각수 유로를 형성하는 실린더 라이너와 상기 실린더 라이너 일 측에 결합되며 냉각수탱크에서 공급되는 냉각수가 흐르는 배관으로 구성된다.In order to accomplish the above object, the present invention provides a diesel engine cylinder head leakage tester comprising a cylinder head having a vent hole formed therein, a cylinder liner coupled to a lower portion of the cylinder head to form a cooling water passage, And a pipe through which the cooling water supplied from the cooling water tank flows.

바람직하게, 상기 실린더 라이너는 상단에 복수개의 볼트가 형성되며, 삽입공이 형성된 상기 실린더 헤드에 관통 삽입되어 볼트와 너트로 결합으로 내부를 기밀하게 유지하는 것을 특징으로 한다. Preferably, the cylinder liner is formed with a plurality of bolts at the upper end thereof. The cylinder liner is inserted through the cylinder head in which the insertion hole is formed, and is hermetically held by a bolt and a nut.

바람직하게, 상기 배관은 실린더 헤드와 실린더라이너의 내부 압력을 육안으로 확인할 수 있는 압력계를 더 포함한다.Preferably, the piping further includes a pressure gauge which can visually confirm the internal pressure of the cylinder head and the cylinder liner.

바람직하게, 상기 배관은 실린더 라이너 하부에 냉각수를 공급하거나 차단하는 밸브를 더 포함한다.Preferably, the piping further includes a valve for supplying or blocking the cooling water to the lower portion of the cylinder liner.

본 발명 디젤엔진 실린더 헤드 누설 시험장치는 실린더 헤드의 누설 시험에 의해 운전 중 헤드균열로 연소실내로 수분 혼 입시 불완전 연소 액 압축 등 윤활작용에 문제가 생기는 것을 감지하여 대형사고가 일어나는 것을 방지할 수 있으며, 실린더 헤드를 실링 하는 방법이 없어서 실린더 헤드건전성 확보를 위해 들어가는 많은 비용과 시간의 낭비를 줄일 수 있다.The leakage test apparatus for a cylinder head of a diesel engine according to the present invention can prevent a large accident by detecting a problem in lubrication such as incomplete combustion fluid compression when water is mixed into a combustion chamber by a head crack during operation by a leakage test of a cylinder head And there is no way to seal the cylinder head, which saves a lot of cost and time required to ensure the integrity of the cylinder head.

도 1은 본 발명 디젤엔진 실린더 헤드 누설 시험장치의 사시도,
도 2는 본 발명 디젤엔진 실린더 헤드 누설 시험장치의 분해도,
도 3은 본 발명 디젤엔진 실린더 헤드 누설 시험장치의 실시도.1 is a perspective view of a diesel engine cylinder head leakage test apparatus according to the present invention,
2 is an exploded view of a diesel engine cylinder head leakage test apparatus according to the present invention,
3 is a view of a cylinder head leakage test apparatus for a diesel engine according to the present invention.

본 발명의 실시 예에서 제시되는 특정한 구조 내지 기능적 설명들은 단지 본 발명의 개념에 따른 실시 예를 설명하기 위한 목적으로 예시된 것으로, 본 발명의 개념에 따른 실시 예들은 다양한 형태로 실시될 수 있다. 또한 본 명세서에 설명된 실시 예들에 한정되는 것으로 해석되어서는 아니 되며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경물, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments set forth herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

이하에서는 첨부된 도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명 디젤엔진 실린더 헤드 누설 시험장치의 사시도이며, 도 2는 본 발명 디젤엔진 실린더 헤드 누설 시험장치의 분해도이다.
FIG. 1 is a perspective view of a diesel engine cylinder head leakage test apparatus according to the present invention, and FIG. 2 is an exploded view of a diesel engine cylinder head leakage test apparatus according to the present invention.

도1 내지 도2에 도시된 바와 같이 디젤엔진 실린더 헤드 누설 시험장치는 벤트홀(110)이 형성된 실린더 헤드(100)와 실린더 헤드(100)의 하부에 결합되어 냉각수 유로를 형성하는 실린더 라이너(200)와, 실린더 라이너 일 측에 결합되고 타단에 냉각수탱크에 결하되어 냉각수가 공급되는 배관(300);으로 구성된다.1 and 2, the diesel engine cylinder head leakage testing apparatus includes a cylinder head 100 in which a vent hole 110 is formed and a cylinder liner 200 that is coupled to a lower portion of the cylinder head 100 to form a cooling water flow path. And a pipe 300 coupled to one side of the cylinder liner and connected to the cooling water tank at the other end to supply cooling water.

실린더 헤드(100)는 연료장치, 흡배기밸브, 캠장치 시동장치, 냉각수통로 등 엔진주요 부품이 설치되어 있는 단조물로서 고온 고압이 일어나기 때문에 냉각이 필요하다. The cylinder head 100 is a forged product in which main components of the engine such as a fuel device, an intake / exhaust valve, a cam device starting device, and a cooling water passage are installed.

실린더헤드(100)는 복수개의 삽입공(미도시)이 관통 형성되어 실린더 라이너(200)와 결합되어 기밀을 유지한다. The cylinder head 100 is formed with a plurality of insertion holes (not shown) through which the cylinder liner 200 is coupled to maintain airtightness.

실린더 라이너(200)는 상부에 복수개의 볼트(210)가 돌출 형성되어 있으며 실린더 헤드(100)의 삽입공에 관통 삽입되고 너트(220)를 이용하여 볼트(210)와 나사 결합하여 냉각수가 누수 되는 것을 방지한다.The cylinder liner 200 has a plurality of bolts 210 protruding from the upper portion thereof and is inserted into the insertion hole of the cylinder head 100 and is screwed to the bolts 210 by using the nuts 220, ≪ / RTI >

배관(300)은 일단이 실린더 라이너에 연결되고 타단이 냉각수탱크(10)에 연결되어 실린더 라이너(200) 내부로 냉각수를 공급한다. 따라서 실린더 라이너(200)에 결합된 실린더 헤드(100)의 냉각수 누설을 확인 할 수 있다. 배관(300)에는 실린더 헤드(100)와 실린더 라이너(200)의 내부 압력을 육안으로 확인 할 수 있는 압력계(310)가 형성된다.One end of the pipe 300 is connected to the cylinder liner and the other end is connected to the cooling water tank 10 to supply the cooling water into the cylinder liner 200. Accordingly, the leakage of the cooling water of the cylinder head 100 coupled to the cylinder liner 200 can be confirmed. The pipe 300 is provided with a pressure gauge 310 for visually checking the internal pressures of the cylinder head 100 and the cylinder liner 200.

또한 배관(300)은 냉각수탱크(10)에서 공급되는 냉각수를 차단하거나 공급할 수 있는 밸브(320)가 형성된다.In addition, the pipe 300 is formed with a valve 320 that can block or supply the cooling water supplied from the cooling water tank 10.

도 3은 본 발명 디젤엔진 실린더 헤드 누설 시험장치의 실시도이다.3 is a view showing an embodiment of a diesel engine cylinder head leakage test apparatus according to the present invention.

상기 설명한 구성에 대해 결합관계를 설명하면 실린더 라이너(200) 상부에 돌출된 볼트(210)에 실린더 헤드(100)의 삽입공(미도시)이 관통 삽입되게 결합한 후 너트(220)를 이용하여 실린더 헤드(100)와 실린더 라이너(200)의 기밀을 유지한다.(Not shown) of the cylinder head 100 is inserted into the bolt 210 protruding from the upper portion of the cylinder liner 200 and inserted into the cylinder 210 through the nut 220, Thereby maintaining airtightness between the head 100 and the cylinder liner 200.

배관(300)은 일단이 실린더 라이너(200)에 연결되고 타단이 냉각수탱크(10)에 연결된다. 이때 밸브(300)를 열어 실린더 라이너(200)와 실린더 헤드(100)에 물을 공급하고 일정시간(10분 이상) 유지하고 압력계(310)를 확인하여 압력의 변화 여부를 판단한다.One end of the pipe 300 is connected to the cylinder liner 200 and the other end is connected to the cooling water tank 10. At this time, the valve 300 is opened to supply water to the cylinder liner 200 and the cylinder head 100, maintain the pressure for a predetermined time (10 minutes or more), and check the pressure gauge 310 to determine whether the pressure has changed.

압력의 변화가 없으면 누설되는 부분이 없는 것이므로 실린더 헤드(100)에 형성된 벤트홀(110)을 열어서 냉각수를 벤트 시킨다.If there is no change in pressure, there is no leaked portion. Therefore, the vent hole 110 formed in the cylinder head 100 is opened to ventilate the cooling water.

이상에서 설명한 본 발명은 전술한 실시 예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명백할 것이다.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

100 : 실린더 헤드 200 : 실린더 라이너
210 : 볼트 220 : 너트
300 : 배관 310 : 압력계
320 : 밸브
100: cylinder head 200: cylinder liner
210: bolt 220: nut
300: piping 310: pressure gauge
320: Valve

Claims (4)

벤트홀이 형성된 디젤엔진 실린더 헤드;
상기 실린더 헤드의 하부에 결합되어 냉각수 유로를 형성하는 실린더 라이너;
상기 실린더 라이너 일 측에 결합되며 냉각수탱크에서 공급되는 냉각수가 흐르는 배관;
을 포함하는 실린더 헤드 누설 시험장치
A diesel engine cylinder head having a vent hole formed therein;
A cylinder liner coupled to a lower portion of the cylinder head to form a cooling water flow path;
A pipe connected to one side of the cylinder liner and through which cooling water supplied from the cooling water tank flows;
A cylinder head leakage test apparatus
제1항에 있어서,
상기 실린더 라이너는 상단에 복수개의 볼트가 형성되며, 삽입공이 형성된 상기 실린더 헤드에 관통 삽입되어 볼트와 너트로 결합으로 내부를 기밀하게 유지하는 것을 특징으로 하는 실린더 헤드 누설 시험장치.
The method according to claim 1,
Wherein the cylinder liner is formed with a plurality of bolts at the upper end thereof, and is inserted through the cylinder head having the insertion hole formed therein, and the cylinder liner is hermetically held by a bolt and a nut.
제1항에 있어서,
상기 배관은 실린더 헤드와 실린더라이너의 내부 압력을 육안으로 확인할 수 있는 압력계를 더 포함하는 실린더 헤드 누설 시험장치

The method according to claim 1,
Wherein the piping comprises a cylinder head leakage test device further comprising a pressure gauge capable of visually confirming the internal pressure of the cylinder head and the cylinder liner

제1항에 있어서,
상기 배관은 실린더 라이너 하부에 냉각수를 공급하거나 차단하는 밸브를 더 포함하는 실린더 헤드 누설 시험장치.
The method according to claim 1,
Wherein the piping further comprises a valve for supplying or blocking cooling water to the lower portion of the cylinder liner.
KR1020160184122A 2016-12-30 2016-12-30 Diesel Engine Cylinder Head Leakage Tester KR20180078876A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1137891A (en) * 1997-07-17 1999-02-12 Kubota Corp Airtightness test equipment for cylinder head
JPH11194065A (en) * 1998-01-06 1999-07-21 Mitsubishi Motors Corp Leakage inspection device
KR20020036003A (en) * 2000-11-07 2002-05-16 이계안 Device for testing hydraulic endurance of engine
KR100667443B1 (en) * 2005-11-29 2007-01-10 현대자동차주식회사 Apparatus for closing fluid passage and detecting leakage of passage in engine
KR200463303Y1 (en) * 2008-12-17 2012-10-29 현대중공업 주식회사 Cylinder head hydraulic test jig

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1137891A (en) * 1997-07-17 1999-02-12 Kubota Corp Airtightness test equipment for cylinder head
JPH11194065A (en) * 1998-01-06 1999-07-21 Mitsubishi Motors Corp Leakage inspection device
KR20020036003A (en) * 2000-11-07 2002-05-16 이계안 Device for testing hydraulic endurance of engine
KR100667443B1 (en) * 2005-11-29 2007-01-10 현대자동차주식회사 Apparatus for closing fluid passage and detecting leakage of passage in engine
KR200463303Y1 (en) * 2008-12-17 2012-10-29 현대중공업 주식회사 Cylinder head hydraulic test jig

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