KR20010059358A - Mounting structure of injector for vehicle - Google Patents

Mounting structure of injector for vehicle Download PDF

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Publication number
KR20010059358A
KR20010059358A KR1019990066750A KR19990066750A KR20010059358A KR 20010059358 A KR20010059358 A KR 20010059358A KR 1019990066750 A KR1019990066750 A KR 1019990066750A KR 19990066750 A KR19990066750 A KR 19990066750A KR 20010059358 A KR20010059358 A KR 20010059358A
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KR
South Korea
Prior art keywords
injector
oil
clamp
cylinder head
vehicle
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KR1019990066750A
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Korean (ko)
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KR100350128B1 (en
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정재훈
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이계안
현대자동차주식회사
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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

PURPOSE: An installing structure of a vehicle injector is provided to supply an optimum combustion efficiency through varying protruding distance of an injector nozzle tip toward inside of a combustion chamber. CONSTITUTION: An elastic member is interposed between the lower surface of an injector(7) and a fixture of a cylinder head(1). A clamp(13) supports a ledge(9) of the injector for pushing the ledge by the oil pressure supplied according to vehicle speed. Herein, an adjusting instrument of a nozzle tip protrusion is formed by an oil chamber(23) receiving the oil from an oil pump; an operating plunger(27) protruded to the lower surface of the clamp for contacting to the ledge of the injector while being vertically operated by the oil from the oil pump; and a pressure resistant hose(29) connecting an oil passage with a high engine oil pressure side. Therefore, a nozzle tip portion of the injector is varied according to the vehicle speed to improve the efficiency of combustion.

Description

차량용 인젝터의 장착 구조{MOUNTING STRUCTURE OF INJECTOR FOR VEHICLE}MOUNTING STRUCTURE OF INJECTOR FOR VEHICLE}

본 발명은 차량용 인젝터의 장착 구조에 관한 것으로서, 보다 상세하게는 차속에 따라 연소실 내부로 돌출되는 인젝터 노즐 팁의 돌출 간격을 가변하여 최적의 연소 효율을 보장하는 차량용 인젝터의 장착 구조에 관한 것이다.The present invention relates to a mounting structure of a vehicle injector, and more particularly, to a mounting structure of a vehicle injector to ensure the optimum combustion efficiency by varying the protrusion interval of the injector nozzle tip protruding into the combustion chamber according to the vehicle speed.

일반적으로 인젝터는 디젤엔진의 연소실 내에 연료를 분사하는 분사장치로서, 실린더 헤드 상에서 상기 연소실에 노즐부분이 배치되도록 장착된다.In general, an injector is an injector that injects fuel into a combustion chamber of a diesel engine, and is mounted such that a nozzle portion is disposed in the combustion chamber on a cylinder head.

즉, 도 2에서 도시한 바와 같이, 인젝터 몸체(51)부분을 실린더 헤드(53)의 형성되는 장착부(55)에 가스켓(57)을 개재하여 삽입한 후, 그 상부의 일측에는 걸림홈(59)을 형성하여 클램프(61)의 일단을 걸치고, 상기 클램프(61)의 타단은 상기 실린더 헤드(53)상에 피봇(63)에 접촉시킨 후, 실린더 헤드(53)상에 체결용 볼트(65)로 단단히 체결 고정하게 된다.That is, as shown in Figure 2, after inserting the injector body 51 portion through the gasket 57 to the mounting portion 55 is formed of the cylinder head 53, the engaging groove 59 on one side of the upper portion ) And the one end of the clamp 61, the other end of the clamp 61 is in contact with the pivot 63 on the cylinder head 53, and then fastening bolt 65 on the cylinder head 53 Tightly).

이와 같이, 인젝터를 실린더 헤드에 장착함에 있어서, 노즐 팁 부분이 실린더 헤드의 하부, 연소실로 돌출되는 간격(NTP, NOZZLE TIP PROTRUSION, 이하 NTP라 칭함.)은 연소계의 특성상, 저속에서는 상기 NTP를 짧게 하여 연료 분사가 유동 강도가 큰 연소실 상부를 지향해야 최적의 연소 상태를 구현할 수 있게 되며, 분사기간이 매우 길어지는 고속에서는 상기 NTP를 길게 하여 연료 분사가 연소실 하부를 지향하도록 함으로써, 분사 말기에 연소실 외부로 유출되는 연료를 줄일 수 있게 되어 최적의 연소 상태를 구현할 수 있게 되는 것이다.Thus, in mounting the injector to the cylinder head, the interval (NTP, NOZZLE TIP PROTRUSION, hereinafter referred to as NTP) in which the nozzle tip portion protrudes into the combustion chamber under the cylinder head is referred to as the NTP at low speed. In order to achieve the optimum combustion state, the fuel injection should be directed to the upper part of the combustion chamber having a large flow intensity, and the fuel injection is directed to the lower part of the combustion chamber at a high speed in which the injection period is very long. It is possible to reduce the fuel flowing out of the combustion chamber to realize the optimum combustion state.

상기한 바와 같이, 인젝터를 실린더 헤드에 장착함에 있어 연소계의 특성상, 차속에 따라 상기한 NTP를 적절하게 조절해야 함에도 불구하고, 종래의 인젝터 장착부의 인젝터 장착 구조로는 이를 실현할 수 없었다.As described above, in the mounting of the injector to the cylinder head, in spite of the characteristics of the combustion system, the above-described NTP should be appropriately adjusted according to the vehicle speed. However, the injector mounting structure of the conventional injector mounting unit could not realize this.

따라서 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 창출된 것으로서, 본 발명의 목적은 차속에 따라 연소실 내부로 돌출되는 인젝터 노즐 팁의 돌출 간격(NTP)을 가변하여 최적의 연소 효율을 보장하는 차량용 인젝터의 장착 구조를 제공하는 것이다.Therefore, the present invention was created to solve the above problems, an object of the present invention is to vary the protrusion interval (NTP) of the injector nozzle tip protruding into the combustion chamber according to the vehicle speed to ensure the optimal combustion efficiency It is to provide a mounting structure of the injector.

도 1은 본 발명에 따른 차량용 인젝터의 장착 구조를 도시한 인젝터 장착부의 부분 단면도이다.1 is a partial cross-sectional view of an injector mounting portion showing a mounting structure of a vehicle injector according to the present invention.

도 2는 종래 기술에 따른 인젝터 장착부의 부분 단면도이다.2 is a partial cross-sectional view of the injector mounting portion according to the prior art.

상기한 바와 같은 목적을 실현하기 위하여 본 발명에 따른 차량용 인젝터의 장착 구조는 실린더 헤드 상에서 장착구를 형성하여 연소실에 노즐부분이 배치되도록 인젝터를 장착하고, 상기 인젝터 일측의 걸림홈과 실린더 헤드상의 피봇에 클램프를 배치하여 상기 클램프를 실린더 헤드상에 체결 볼트로 체결하는 차량용 인젝터의 장착 구조에서,In order to realize the object as described above, the mounting structure of the vehicle injector according to the present invention forms a mounting hole on the cylinder head to mount the injector so that the nozzle portion is disposed in the combustion chamber, and the locking groove on one side of the injector and the pivot on the cylinder head. In a mounting structure of an injector for a vehicle in which a clamp is disposed on the clamp to fasten the clamp onto the cylinder head,

상기 인젝터의 하부면과 상기 실린더 헤드의 장착구 사이에 탄성부재를 개재하고, 상기 클램프는 인젝터의 일측 걸림홈에 안착되는 일측 단부 내부에 상기 인젝터의 걸림홈을 지지하여 차속에 따라 공급되는 유압에 의해 상기 걸림홈을 밀도록 작동하는 노즐 팁 돌출 간격 조절 수단을 포함하여 이루어지는 것을 특징으로 하며, 상기 탄성부재는 코일 스프링으로 이루어지며,An elastic member is interposed between the lower surface of the injector and the mounting hole of the cylinder head, and the clamp supports the locking groove of the injector inside one end seated in the locking groove of one side of the injector to supply hydraulic pressure supplied according to the vehicle speed. It characterized in that it comprises a nozzle tip protrusion spacing means for operating to push the locking groove by, the elastic member is made of a coil spring,

상기 노즐 팁 돌출 간격 조절 수단은 상기 클램프의 일측 내부에 구성되어 상부로 오일 통로를 통하여 오일펌프로부터 오일을 공급받는 유압실과; 상기 유압실내에서 상기 클램프 일측의 하부면으로 돌출되어 상기 인젝터의 걸림홈에 접촉하며, 상기 오일펌프로부터 공급되는 오일에 의해 상하 작동하도록 설치되는 작동 플런저와; 상기 클램프의 일측 상부에서 상기 오일 통로와 엔진 오일 고압측과 연결하는 내압호스를 포함하여 이루어지는 것을 특징으로 한다.The nozzle tip protrusion interval adjusting means is configured in the one side of the clamp and the hydraulic chamber receiving the oil from the oil pump through the oil passage to the top; An actuating plunger protruding from the hydraulic chamber to a lower surface of one side of the clamp to contact a catching groove of the injector, and installed up and down by oil supplied from the oil pump; It characterized in that it comprises a pressure-resistant hose connecting the oil passage and the engine oil high pressure side from one side of the clamp.

이하 본 발명의 바람직한 구성 및 작용을 첨부한 도면에 의거하여 보다 상세하게 설명하면 다음과 같다.Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 차량용 인젝터의 장착 구조를 도시한 인젝터 장착부의 부분 단면도로서, 본 발명에 따른 차량용 인젝터의 장착 구조는 실린더 헤드(1) 상에서 장착구(3)를 통하여 연소실(5)에 노즐부분이 배치되도록 인젝터(7)를 장착하고, 상기 인젝터(7) 일측의 걸림홈(9)과 실린더 헤드(1)상의 피봇(11)에 클램프(13)를 배치하여 상기 클램프(13)를 실린더 헤드(1)상에 체결 볼트(15)로 체결한다.1 is a partial cross-sectional view of an injector mounting portion showing a mounting structure of a vehicle injector according to the present invention, wherein the mounting structure of the vehicle injector according to the present invention is mounted to the combustion chamber 5 through a mounting hole 3 on the cylinder head 1. The injector 7 is mounted so that the nozzle portion is arranged, and the clamp 13 is disposed in the locking groove 9 on one side of the injector 7 and the pivot 11 on the cylinder head 1 to thereby mount the clamp 13. The fastening bolt 15 is fastened on the cylinder head 1.

이때, 상기 인젝터(7)의 하부면(17)과 상기 실린더 헤드(1)의 장착구(3) 사이에는 탄성부재로 코일 스프링(19)을 개재한다.At this time, the coil spring 19 is interposed between the lower surface 17 of the injector 7 and the mounting hole 3 of the cylinder head 1 as an elastic member.

그리고 상기 클램프(13)는 인젝터(7)의 일측 걸림홈(9)에 안착되는 일측 단부 내부에 상기 인젝터(7)의 걸림홈(9)을 지지하여 차속에 따라 공급되는 유압에 의해 상기 걸림홈(9)을 밀도록 작동하는 노즐 팁 돌출 간격 조절 수단을 구비하게 된다.In addition, the clamp 13 supports the locking groove 9 of the injector 7 inside one end seated in one locking groove 9 of the injector 7 by the hydraulic pressure supplied according to the vehicle speed. It is provided with a nozzle tip protrusion spacing means that operates to push (9).

상기 노즐 팁 돌출 간격 조절 수단은 상기 클램프(13)의 일측 내부에서 상부로 오일 통로(21)를 통하여 오일 펌프(미도시)로부터 오일을 공급받는 유압실(23)을 구성하고, 상기 유압실(23)내에는 상기 클램프(13) 일측의 하부면(25)으로 돌출되어 상기 인젝터(7)의 걸림홈(9)에 접촉하며, 상기 오일 펌프(미도시)로부터 공급되는 오일에 의해 상하 작동하는 작동 플런저(27)가 설치된다.The nozzle tip protrusion gap adjusting means constitutes a hydraulic chamber 23 receiving oil from an oil pump (not shown) through an oil passage 21 from one side of the clamp 13 to an upper portion thereof. 23 is protruded into the lower surface 25 of one side of the clamp 13 to contact the catching groove 9 of the injector 7, and is operated up and down by oil supplied from the oil pump (not shown) An actuating plunger 27 is installed.

또한, 상기 클램프(13)의 일측 상부에서 상기 오일 통로(21)는 오일 펌프(미도시)로부터 공급되는 엔진 오일 고압측과 연결하는 내압호스(29)와 연결되어 이루어진다.In addition, the oil passage 21 at one upper portion of the clamp 13 is connected to the pressure-resistant hose 29 connected to the high pressure side of the engine oil supplied from an oil pump (not shown).

따라서, 상기한 바와 같은 구성을 갖는 차량용 인젝터의 장착 구조에 의해 인젝터(7)의 노즐 팁(31) 부분이 실린더 헤드(1)의 하부, 연소실(5)로 돌출되는 간격(NTP, NOZZLE TIP PROTRUSION)이 연소계의 특성에 맞게 저속과 고속에서 가변 조절되면서 연소 효율을 높이게 된다.Therefore, the nozzle tip 31 portion of the injector 7 protrudes to the combustion chamber 5 under the cylinder head 1 by the mounting structure of the vehicle injector having the above configuration (NTP, NOZZLE TIP PROTRUSION). ) Is variable at low and high speeds according to the characteristics of the combustion system to increase the combustion efficiency.

즉, 저속에서는 오일 펌프(미도시)로부터 상기 내압호스(29)를 통하여 유압실(23)에 공급되는 유압이 낮아지게 되며, 이에 따라 코일 스프링(19)이 상기 인젝터(7)를 밀어 올려 상기 NTP를 짧게 함으로 연료 분사가 유동 강도가 큰 연소실(5) 상부를 지향하여 최적의 연소 상태를 구현할 수 있게 된다.That is, at a low speed, the oil pressure supplied to the hydraulic chamber 23 from the oil pump (not shown) through the pressure resistant hose 29 is lowered, so that the coil spring 19 pushes the injector 7 up to By shortening the NTP, the fuel injection can be directed to the upper part of the combustion chamber 5 having a high flow intensity, so that an optimum combustion state can be realized.

또한, 연료 분사기간이 매우 길어지는 고속에서는 오일 펌프(미도시)로부터 상기 내압호스(29)를 통하여 유압실(23)에 공급되는 유압이 높아지게 되어 상기 작동 플런저(27)가 코일 스프링(19)의 탄성력을 극복하고 인젝터(7)를 하부로 밀어 상기 NTP를 길게 하여 연료 분사가 연소실(5) 하부를 지향하도록 함으로써, 분사 말기에 연소실(5) 외부로 유출되는 연료를 줄일 수 있게 되는 것이다.In addition, at a high speed at which the fuel injection period is very long, the hydraulic pressure supplied from the oil pump (not shown) to the hydraulic chamber 23 through the pressure resistant hose 29 is increased, so that the actuating plunger 27 is connected to the coil spring 19. By overcoming the elastic force of the injector 7 by pushing the injector 7 to extend the NTP to direct the fuel injection to the combustion chamber 5, it is possible to reduce the fuel flowing out of the combustion chamber 5 at the end of the injection.

상술한 바와 같이 본 발명에 따른 차량용 인젝터의 장착 구조에 따른면, 차속에 따라 연소실 내부로 돌출되는 인젝터 노즐 팁의 돌출 간격(NTP)을 가변하여 최적의 연소 효율을 보장할 수 있게 되는 것이다.According to the mounting structure of the vehicle injector according to the present invention as described above, it is possible to ensure the optimum combustion efficiency by varying the projection interval (NTP) of the injector nozzle tip protruding into the combustion chamber according to the vehicle speed.

Claims (3)

실린더 헤드 상에서 장착구를 형성하여 연소실에 노즐부분이 배치되도록 인젝터를 장착하고, 상기 인젝터 일측의 걸림홈과 실린더 헤드상의 피봇에 클램프를 배치하여 상기 클램프를 실린더 헤드상에 체결 볼트로 체결하는 차량용 인젝터의 장착 구조에 있어서,A vehicle injector which forms a mounting hole on the cylinder head to mount the injector so that the nozzle part is arranged in the combustion chamber, and arranges the clamp in the locking groove on one side of the injector and the pivot on the cylinder head to fasten the clamp with a fastening bolt on the cylinder head. In the mounting structure of, 상기 인젝터의 하부면과 상기 실린더 헤드의 장착구 사이에 탄성부재를 개재하고, 상기 클램프는 인젝터의 일측 걸림홈에 안착되는 일측 단부 내부에 상기 인젝터의 걸림홈을 지지하여 차속에 따라 공급되는 유압에 의해 상기 걸림홈을 밀도록 작동하는 노즐 팁 돌출 간격 조절 수단을 포함하여 이루어지는 것을 특징으로 하는 차량용 인젝터의 장착 구조.An elastic member is interposed between the lower surface of the injector and the mounting hole of the cylinder head, and the clamp supports the locking groove of the injector inside one end seated in the locking groove of one side of the injector to supply hydraulic pressure supplied according to the vehicle speed. Mounting structure of a vehicle injector, characterized in that it comprises a nozzle tip protrusion spacing means for operating to push the locking groove. 청구항 1에 있어서, 상기 탄성부재는The method according to claim 1, wherein the elastic member 코일 스프링으로 이루어지는 것을 특징으로 하는 차량용 인젝터의 장착 구조.Mounting structure of a vehicle injector, characterized in that consisting of a coil spring. 청구항 1에 있어서, 상기 노즐 팁 돌출 간격 조절 수단은The method of claim 1, wherein the nozzle tip protrusion spacing means 상기 클램프의 일측 내부에 구성되어 상부로 오일 통로를 통하여 오일펌프로부터 오일을 공급받는 유압실과;A hydraulic chamber configured inside one side of the clamp and receiving oil from an oil pump through an oil passage to an upper portion thereof; 상기 유압실내에서 상기 클램프 일측의 하부면으로 돌출되어 상기 인젝터의걸림홈에 접촉하며, 상기 오일펌프로부터 공급되는 오일에 의해 상하 작동하도록 설치되는 작동 플런저와;An actuating plunger protruding from the hydraulic chamber to a lower surface of one side of the clamp and contacting a catching groove of the injector, and installed up and down by oil supplied from the oil pump; 상기 클램프의 일측 상부에서 상기 오일 통로와 엔진 오일 고압측과 연결하는 내압호스를 포함하여 이루어지는 것을 특징으로 하는 차량용 인젝터의 장착 구조.And a pressure resistant hose connecting the oil passage and the engine oil high pressure side from one side of the clamp.
KR1019990066750A 1999-12-30 1999-12-30 Mounting structure of injector for vehicle KR100350128B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020036230A (en) * 2000-11-09 2002-05-16 이계안 Variable NTP apparatus using piezo-ceramic
KR100488724B1 (en) * 2002-12-03 2005-05-11 현대자동차주식회사 Nozzle tip protrusion control device of injector in common rail type diesel engines
KR100862418B1 (en) * 2006-12-15 2008-10-08 현대자동차주식회사 Injector clamp for vehicle
KR20180072575A (en) * 2016-12-21 2018-06-29 로베르트 보쉬 게엠베하 Assembly having at least one valve and one bracket

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020048472A (en) * 2000-12-18 2002-06-24 이계안 Device for moving injection nozzle for diesel engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020036230A (en) * 2000-11-09 2002-05-16 이계안 Variable NTP apparatus using piezo-ceramic
KR100488724B1 (en) * 2002-12-03 2005-05-11 현대자동차주식회사 Nozzle tip protrusion control device of injector in common rail type diesel engines
KR100862418B1 (en) * 2006-12-15 2008-10-08 현대자동차주식회사 Injector clamp for vehicle
KR20180072575A (en) * 2016-12-21 2018-06-29 로베르트 보쉬 게엠베하 Assembly having at least one valve and one bracket

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