KR100383963B1 - Structure for sealing MAP sensor of automobile - Google Patents
Structure for sealing MAP sensor of automobile Download PDFInfo
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- KR100383963B1 KR100383963B1 KR10-2000-0076567A KR20000076567A KR100383963B1 KR 100383963 B1 KR100383963 B1 KR 100383963B1 KR 20000076567 A KR20000076567 A KR 20000076567A KR 100383963 B1 KR100383963 B1 KR 100383963B1
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- map sensor
- mounting portion
- mounting
- sensor
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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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10373—Sensors for intake systems
- F02M35/1038—Sensors for intake systems for temperature or pressure
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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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
본 발명은 자동차의 흡기다기관(intake manifold)의 서지탱크에 장착되어 흡기부압을 측정하는 맵센서와 이 맵센서가 장착되는 장착부 간의 기밀을 유지하기 위한 자동차용 맵센서의 밀봉구조에 관한 것으로, 본 발명에 따르면, 압력을 측정하는 센서부와, 맵센서 몸체를 지탱하는 마운팅부와, 와이어링(wiring)과 연결되는 컨넥터부 및, 흡기다기관의 서지탱크의 장착부에 형성된 장착공에 삽통되는 원통부를 구비하여, 흡기다기관의 압력변화를 감지하도록 된 맵센서에 있어서, 상기 맵센서의 마운팅부는 상기 서지탱크의 장착부와 접하는 면에 상기 원통부의 외측부를 둘러싸도록 고리형의 오목홈이 형성되고, 상기 오목홈에는 탄성재질의 밀봉재가 장착된 것을 특징으로 하는 자동차용 맵센서의 밀봉구조가 제공된다.The present invention relates to a sealing structure of a map sensor mounted on a surge tank of an intake manifold of an automobile to measure intake underpressure and an airtight map sensor for maintaining the airtightness between the mounting portion to which the map sensor is mounted. According to the invention, the sensor portion for measuring the pressure, the mounting portion for supporting the map sensor body, the connector portion connected to the wiring (wiring), and the cylindrical portion inserted into the mounting hole formed in the mounting portion of the surge tank of the intake manifold And a map sensor configured to detect a pressure change of the intake manifold, wherein the mounting portion of the map sensor is formed with an annular concave groove so as to surround the outer portion of the cylindrical portion on a surface in contact with the mounting portion of the surge tank. The groove is provided with a sealing structure of the map sensor for automobiles, characterized in that the sealing material of the elastic material is mounted.
Description
본 발명은 자동차의 흡기부압을 측정하기 위한 맵센서에 관한 것으로, 특히 자동차의 흡기다기관(intake manifold)에 장착되어 흡기부압을 측정하는 맵센서와 이 맵센서가 장착되는 장착부 간의 기밀을 유지하기 위한 자동차용 맵센서의 밀봉구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map sensor for measuring intake underpressure of a vehicle, and more particularly, to maintain airtightness between a map sensor mounted on an intake manifold of a vehicle to measure intake underpressure and a mounting portion to which the map sensor is mounted. The sealing structure of the map sensor for automobiles.
일반적으로, 자동차에서 사용되고 있는 분사장치는 연료펌프와 인젝터, 또는 분사펌프와 인젝터가 기화기의 기능을 대신하는 것으로, 연료를 계량하고 무화시켜 연소실에 공급한다. 연료분사의 제어는 전자식이나 기계식으로 할 수 있으며, 기관의 현재의 운전상태에 따라 최적의 혼합기를 형성하여 공급할 수 있어야 한다.In general, injectors used in automobiles are fuel pumps and injectors, or injection pumps and injectors replace the functions of the carburetor, and the fuel is metered and atomized and supplied to the combustion chamber. The control of the fuel injection can be either electronic or mechanical, and the optimum mixer can be formed and supplied according to the engine's current operating conditions.
최근에는 전자산업의 발달과 더불어 흡입공기량 및 흡입공기의 온도나 냉각수의 온도 및 스로틀밸브의 개도량을 바탕으로 연료의 분사량을 결정하는 전자제어 가솔린 분사장치가 널리 사용되고 있다. 이중에서 스로틀밸브 전의 한 곳에 인젝터를 설치하여 연료를 분사하는 단일공급방식(single point injection)이나 각 기통마다 인젝터를 설치하여 연료를 분사하는 다중분사방식(multi point injection)의 경우에 연료의 분사는 전자제어유닛(ECU)에 의해 전자적으로 제어된다.Recently, with the development of the electronics industry, an electronically controlled gasoline injector which determines the injection amount of fuel based on the intake air amount, the intake air temperature, the coolant temperature, and the opening amount of the throttle valve has been widely used. In the case of a single point injection method in which an injector is installed in one place before the throttle valve, or a multi point injection method in which fuel is injected by installing an injector for each cylinder, fuel injection is performed. It is controlled electronically by an electronic control unit (ECU).
상기 전자제어유닛은 맵센서에서 전달되는 흡기다기관의 절대압력(MAP: manifold absolute pressure}이나, 스로틀밸브의 개도, 기관의 회전수, 냉각수 온도 및 배기가스 중에 포함된 산소량을 바탕으로 기관의 운전상태에 알맞은 혼합기를 형성할 수 있도록 연료량이나 점화시기 등을 결정한다.The electronic control unit operates the engine based on the manifold absolute pressure (MAP) of the intake manifold delivered from the map sensor, the opening degree of the throttle valve, the engine rotation speed, the coolant temperature, and the amount of oxygen contained in the exhaust gas. Determine the amount of fuel, timing of ignition, etc., to form a suitable mixer
여기서, 상기 맵센서는 압전소자를 이용하여 흡기다기관의 압력(및 온도)변화를 전압으로 변화하여 전자제어유닛으로 전달하는 역할을 하는 것이다.Here, the map sensor serves to transfer a change in pressure (and temperature) of the intake manifold to a voltage by using a piezoelectric element and transfer it to the electronic control unit.
도 1과 도 2는 상기와 같은 종래의 맵센서 및 이 맵센서가 장착되는 장착부의 구조를 나타낸 것으로, 맵센서(10)는 압력을 측정하는 센서부(11)와, 맵센서 몸체를 지탱하는 마운팅부(12)와, 와이어링(wiring)과 연결되는 컨넥터부(13)와, 흡기다기관의 서지탱크(surge tank)에 위치하여 상기 맵센서가 장착되는 장착부(20)의 장착공(21)에 삽통되어 설치되는 원통부(14)와, 상기 원통부(14)의 외주부에 설치되어 상기 장착공(21) 내경면에 탄성적으로 압착되며 밀봉하는 오링(15; O-ring)으로 구성된다.1 and 2 illustrate a structure of a conventional map sensor and a mounting unit to which the map sensor is mounted. The map sensor 10 supports a sensor unit 11 for measuring pressure and a map sensor body. Mounting portion 12, the connector portion 13 is connected to the wiring (wiring), the mounting hole 21 of the mounting portion 20 is located in the surge tank (surge tank) of the intake manifold to mount the map sensor A cylindrical portion 14 inserted into and inserted into the outer circumferential portion of the cylindrical portion 14 and an O-ring 15 that is elastically compressed to the inner diameter surface of the mounting hole 21 and sealed. .
여기서, 상기 장착부(20)의 장착공(21) 상단부에는 맵센서(10)의 원통부(14)가 장착공(21)에 삽입될 때 상기 오링(15)이 손상되지 않고 원활히 삽입되도록 외측으로 확장되며 경사진 구배부(22)가 형성되어 있다.Here, when the cylindrical portion 14 of the map sensor 10 is inserted into the mounting hole 21 on the upper end of the mounting hole 21 of the mounting portion 20, the O-ring 15 is smoothly inserted without being damaged. An extended and inclined gradient portion 22 is formed.
그러나, 상기와 같은 종래의 맵센서 및 그 장착부의 밀봉구조에 있어서, 상기 맵센서(10)와 장착부(20) 간의 기밀을 유지하기 위해서는 맵센서의 오링(15)에 손상이 생겨서는 안되므로, 맵센서의 오링(15)을 장착부(20)의 장착공(21) 내경면에 장착할 때 손상을 방지하기 위하여 장착부(20)에 구배부(22)를 형성함과 더불어 장착부(20)의 장착공(21) 내경면의 조도를 소정치 이상, 예컨대 3.2s(0.8a) 이상으로 가공하는 등의 특별한 정밀가공이 요구되었으며, 이러한 추가적인 가공은 가공비 상승과 원가 상승의 요인이 되는 문제점을 유발하였다.However, in the sealing structure of the conventional map sensor and its mounting portion as described above, in order to maintain the airtight between the map sensor 10 and the mounting portion 20, the O-ring 15 of the map sensor should not be damaged, so that the map In order to prevent damage when mounting the O-ring 15 of the sensor on the inner diameter surface of the mounting hole 21 of the mounting portion 20, a gradient 22 is formed on the mounting portion 20 and the mounting hole of the mounting portion 20 is formed. (21) Special precision machining was required, such as processing the inner surface roughness to a predetermined value or more, for example, 3.2 s (0.8 a) or more, and such additional processing caused problems such as increase in processing cost and cost increase.
이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 장착부의 장착공에 추가적인 가공을 하지 않아도 되어 가공성을 향상시킴과 더불어, 맵센서와 장착부 간의 기밀성을 향상시킬 수 있도록 한 자동차용 맵센서의 밀봉구조를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems, do not need additional processing in the mounting hole of the mounting portion to improve the workability, and also to improve the airtightness between the map sensor and the mounting portion of the automotive map sensor The purpose is to provide a sealing structure of.
도 1은 종래의 맵센서 및 이 맵센서가 장착되는 장착부를 분해하여 나타낸 요부 종단면도1 is a principal longitudinal sectional view showing an exploded view of a conventional map sensor and a mounting portion to which the map sensor is mounted;
도 2는 도 1의 맵센서 및 장착부가 서로 결합된 상태를 나타낸 요부 종단면도2 is a longitudinal sectional view showing main parts of a state in which the map sensor and the mounting unit of FIG. 1 are coupled to each other;
도 3은 본 발명에 따른 맵센서 및 이 맵센서가 장착되는 장착부를 분해하여 나타낸 요부 종단면도3 is a longitudinal sectional view of the main part of the map sensor according to the present invention and an exploded view of the mounting portion to which the map sensor is mounted.
도 4는 도 3의 맵센서 및 장착부가 서로 결합된 상태를 나타낸 요부 종단면도4 is a longitudinal sectional view showing main parts of a state in which the map sensor and the mounting unit of FIG. 3 are coupled to each other;
*도면의 주요부분의 참조부호에 대한 설명** Description of reference numerals in the main parts of the drawings *
100 - 맵센서 101 - 센서부100-MAP SENSOR 101-SENSOR
102 - 마운팅부 103 - 컨넥터부102-mounting section 103-connector section
104 - 원통부 105 - 홈104-Cylindrical section 105-Grooves
106 - 오링106-O-Ring
상기와 같은 목적을 달성하기 위하여 본 발명은, 압력을 측정하는 센서부와, 맵센서 몸체를 지탱하는 마운팅부와, 와이어링(wiring)과 연결되는 컨넥터부 및, 흡기다기관의 서지탱크의 장착부에 형성된 장착공에 삽통되는 원통부를 구비하여, 흡기다기관의 압력변화를 감지하도록 된 맵센서에 있어서, 상기 맵센서의 마운팅부는 상기 서지탱크의 장착부와 접하는 면에 상기 원통부의 외측부를 둘러싸도록 고리형의 오목홈이 형성되고, 상기 오목홈에는 탄성재질의 밀봉재가 장착된 것을 특징으로 하는 자동차용 맵센서의 밀봉구조를 제공한다.In order to achieve the above object, the present invention provides a sensor unit for measuring pressure, a mounting unit for supporting a map sensor body, a connector unit connected with wiring, and a mounting portion of a surge tank of an intake manifold. In the map sensor having a cylindrical portion inserted into the formed mounting hole, to detect the pressure change of the intake manifold, the mounting portion of the map sensor is ring-shaped so as to surround the outer portion of the cylindrical portion in contact with the mounting portion of the surge tank A concave groove is formed, and the concave groove provides a sealing structure of a map sensor for an automobile, characterized in that a sealing material of elastic material is mounted.
본 발명의 한 형태에 따르면, 상기 밀봉재는 고무재질의 오링(O-ring)인 것을 특징으로 한다.According to one aspect of the invention, the seal is characterized in that the rubber O-ring (O-ring).
이하, 본 발명에 따른 맵센서의 밀봉구조의 일 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of a sealing structure of a map sensor according to the present invention will be described in detail with reference to the accompanying drawings.
도 3은 발명에 따른 맵센서 및 이 맵센서가 장착되는 장착부를 분해하여 나타낸 요부 종단면도이고, 도 4는 도 3의 맵센서 및 장착부가 서로 결합된 상태를 나타낸 요부 종단면도이다.FIG. 3 is a main longitudinal cross-sectional view illustrating an exploded view of a map sensor and a mounting unit to which the map sensor is mounted, and FIG. 4 is a longitudinal cross-sectional view illustrating a state in which the map sensor and the mounting unit of FIG. 3 are coupled to each other.
도 3과 도 4에 도시된 바와 같이, 맵센서(100)는 압력을 측정하는 센서부(101)와; 맵센서 몸체를 지탱하는 마운팅부(102)와; 와이어링(wiring)과 연결되는 컨넥터부(103)와; 상기 마운팅부(102)의 저면 중앙부에 형성되어, 흡기다기관의 서지탱크(surge tank)에 형성된 장착부(200)의 장착공(201)에 삽통되어 설치되는 원통부(104)로 구성된다.As shown in Figure 3 and 4, the map sensor 100 and the sensor unit 101 for measuring the pressure; A mounting unit 102 supporting the map sensor body; A connector portion 103 connected to wiring; It is formed in the center portion of the bottom surface of the mounting portion 102, the cylindrical portion 104 is inserted into the mounting hole 201 of the mounting portion 200 formed in the surge tank (surge tank) of the intake manifold.
상기와 같이 구성된 맵센서(100)는 상기 원통부(104)가 장착부(200)의 장착공(201) 삽입된 상태에서 상기 마운팅부(102)가 장착부(200)에 나사 등의 체결수단에 의해 단단히 고정됨으로써 장착부(200) 상에 설치된다.The map sensor 100 configured as described above has the mounting portion 102 mounted to the mounting portion 200 by a fastening means such as a screw in the state in which the cylindrical portion 104 is inserted into the mounting hole 201 of the mounting portion 200. It is installed on the mounting portion 200 by being firmly fixed.
여기서, 상기 마운팅부(102)에는 상기 장착부(200)와 접하게 되는 면에 상기 원통부(104)의 외측부를 둘러싸도록 고리형의 오목홈(105)이 형성되고, 상기 오목홈(105)에는 고무재질의 밀봉재인 오링(106;O-ring)이 장착되는 바, 상기 맵센서(100)가 장착부(200)에 장착될 때 맵센서(100)의 마운팅부(102)와 장착부(200) 외측면 사이에 오링(106)이 강하게 압착되어 양자간에 기밀이 유지될 수 있게 된다.Here, the mounting portion 102 is formed with a ring-shaped concave groove 105 to surround the outer portion of the cylindrical portion 104 on the surface in contact with the mounting portion 200, the concave groove 105 O-ring 106, which is a sealing material, is mounted, and when the map sensor 100 is mounted on the mounting unit 200, the mounting unit 102 and the mounting unit 200 outer surface of the map sensor 100 are mounted. The O-ring 106 is strongly pressed in between so that the airtightness can be maintained between the two rings.
따라서, 상기와 같이 맵센서(100)와 장착부(200) 간의 기밀을 유지하는 밀봉재가 원통부(104)에 압입되면서 설치되지 않고 마운팅부(102)와 장착부(200)의 접촉면 사이에 설치되므로 맵센서 설치과정에서 밀봉재가 손상될 우려가 없어지게 되고, 맵센서 설치시 상기 밀봉재를 보호하기 위해 장착부에 구배부를 형성하고 장착공 내경면의 조도를 소정치 이상이 되도록 가공할 필요가 없어지게 된다.Therefore, the sealing material that maintains the airtightness between the map sensor 100 and the mounting portion 200 as described above is not installed while being pressed into the cylindrical portion 104, it is installed between the contact surface of the mounting portion 102 and the mounting portion 200, the map There is no risk that the sealing material may be damaged during the sensor installation process, and in order to protect the sealing material during the installation of the map sensor, there is no need to form a gradient in the mounting portion and process the roughness of the inner diameter surface of the mounting hole to a predetermined value or more.
또한, 상기 밀봉재가 원형의 외주면을 갖는 부분에 설치되지 않고, 편평한 면상에서 압착되어 밀봉하므로 가공시 발생하는 공차에 의한 기밀누설의 가능성 또한 줄어들게 된다.In addition, the sealing material is not installed in a portion having a circular outer circumferential surface, and is pressed and sealed on a flat surface, thereby reducing the possibility of airtight leakage due to tolerances generated during processing.
이상에서와 같이 본 발명에 따르면, 맵센서와 장착부 간의 기밀을 유지하는 밀봉재가 장착공에 압입되면서 설치되지 않음으로 인하여, 맵센서 설치과정에서 밀봉재가 손상될 우려가 없어지게 되고, 맵센서 설치시 상기 밀봉재를 보호하기 위해 장착부에 구배부를 형성하고 장착공 내경면의 조도를 소정치 이상이 되도록 가공할 필요가 없어지게 되므로, 가공비가 절약될 뿐만 아니라 맵센서의 설치 및 유지 보수가 용이하게 이루어질 수 있게 된다.As described above, according to the present invention, since the sealing material that maintains the airtightness between the map sensor and the mounting portion is not installed while being press-fitted into the mounting hole, there is no fear that the sealing material is damaged during the installation process of the map sensor. In order to protect the sealing material, it is not necessary to form a gradient in the mounting portion and to process the roughness of the inner diameter of the mounting hole to a predetermined value or more, thereby saving processing cost and facilitating installation and maintenance of the map sensor. Will be.
또한, 상기 밀봉재가 원형의 외주면을 갖는 부분에 설치되지 않고, 편평한 면상에서 압착되어 밀봉하므로 기밀성이 향상되는 효과가 있다.In addition, the sealing material is not provided in a portion having a circular outer circumferential surface, but is compressed and sealed on a flat surface, thereby improving the airtightness.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0076567A KR100383963B1 (en) | 2000-12-14 | 2000-12-14 | Structure for sealing MAP sensor of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0076567A KR100383963B1 (en) | 2000-12-14 | 2000-12-14 | Structure for sealing MAP sensor of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20020047926A KR20020047926A (en) | 2002-06-22 |
| KR100383963B1 true KR100383963B1 (en) | 2003-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2000-0076567A KR100383963B1 (en) | 2000-12-14 | 2000-12-14 | Structure for sealing MAP sensor of automobile |
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| Country | Link |
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| KR (1) | KR100383963B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20200134727A (en) | 2019-05-23 | 2020-12-02 | 두산인프라코어 주식회사 | Protecting device for sensor unit of engine and engine having the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH075000A (en) * | 1993-04-08 | 1995-01-10 | Ford Motor Co | Air-flow-rate sensor assembly, which is separately attached |
| JPH08201133A (en) * | 1995-01-25 | 1996-08-09 | Hitachi Ltd | Exothermic resistance type air flow rate measuring apparatus |
| JPH08296513A (en) * | 1995-04-25 | 1996-11-12 | Toyoda Spinning & Weaving Co Ltd | Air cleaner for internal combustion engine |
| JP2001123920A (en) * | 1999-10-26 | 2001-05-08 | Hitachi Ltd | Heating resistance element type air flow rate measuring device and seal method for intake system component member |
-
2000
- 2000-12-14 KR KR10-2000-0076567A patent/KR100383963B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH075000A (en) * | 1993-04-08 | 1995-01-10 | Ford Motor Co | Air-flow-rate sensor assembly, which is separately attached |
| JPH08201133A (en) * | 1995-01-25 | 1996-08-09 | Hitachi Ltd | Exothermic resistance type air flow rate measuring apparatus |
| JPH08296513A (en) * | 1995-04-25 | 1996-11-12 | Toyoda Spinning & Weaving Co Ltd | Air cleaner for internal combustion engine |
| JP2001123920A (en) * | 1999-10-26 | 2001-05-08 | Hitachi Ltd | Heating resistance element type air flow rate measuring device and seal method for intake system component member |
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| Publication number | Publication date |
|---|---|
| KR20020047926A (en) | 2002-06-22 |
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