KR100212522B1 - Inner-cam-type injection pump - Google Patents

Inner-cam-type injection pump Download PDF

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Publication number
KR100212522B1
KR100212522B1 KR1019960062886A KR19960062886A KR100212522B1 KR 100212522 B1 KR100212522 B1 KR 100212522B1 KR 1019960062886 A KR1019960062886 A KR 1019960062886A KR 19960062886 A KR19960062886 A KR 19960062886A KR 100212522 B1 KR100212522 B1 KR 100212522B1
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KR
South Korea
Prior art keywords
cam
roller
shoe
injection pump
present
Prior art date
Application number
KR1019960062886A
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Korean (ko)
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KR19980044761A (en
Inventor
이해욱
Original Assignee
정몽규
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 정몽규, 현대자동차주식회사 filed Critical 정몽규
Priority to KR1019960062886A priority Critical patent/KR100212522B1/en
Publication of KR19980044761A publication Critical patent/KR19980044761A/en
Application granted granted Critical
Publication of KR100212522B1 publication Critical patent/KR100212522B1/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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/12—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps having other positive-displacement pumping elements, e.g. rotary
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston

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

Abstract

본 발명의 목적은 로울러와 슈우의 마모를 방지하여 연료분사량 및 연료분사시기를 일정하게 유지토록하는 인너캠 방식의 인젝션 펌프를 제공하는데 있다.An object of the present invention is to provide an injection pump of the inner cam type to prevent the wear of the roller and the shoe to maintain a constant fuel injection amount and fuel injection timing.

상기한 목적을 달성하기 위한 본 발명은The present invention for achieving the above object

캠링(1)과, 캠링(1)의 캠표면(2)을 따라 도는 로울러(3)와, 로울러(3)를 지지하는 슈우(4)와, 연료를 압송하는 플런저(5)를 포함하는 인너캠 방식의 인젝션 펌프에 있어서,An inner including a cam ring 1, a roller 3 turning along the cam surface 2 of the cam ring 1, a shoe 4 supporting the roller 3, and a plunger 5 for pumping fuel. In the cam type injection pump,

상기 로울러(3)는 슈우(4)의 양측으로 돌설되는 지지부재(6)에 의해 회전가능하게 지지되는 것임을 특징으로 하는 인너캠 방식의 인젝션 펌프를 요지로 한다.The roller (3) is an inner cam injection pump characterized in that it is rotatably supported by the support member 6 protruding to both sides of the shoe (4).

Description

인너캠 방식의 인젝션 펌프Inner Cam Injection Pump

본 발명은 인너캠(Inner Cam) 방식의 인젝션 펌프의 구조개선에 관한 것이다.The present invention relates to a structural improvement of an injection cam of an inner cam type.

종래 인너캠 방식의 인젝션 펌프는 도 3 에 도시하는 것과같이 캠링(11)을 따라 도는 로울러(12)가 캠면의 형상에 의해 플런저(13)를 밀게되어 이때의 압축력에 의해 연료를 압송하는 구조로 구성되어 있다.In the conventional inner cam type injection pump, as shown in FIG. 3, the roller 12 moving along the cam ring 11 pushes the plunger 13 by the shape of the cam surface, thereby compressing fuel by the compression force. Consists of.

그러나 상기한 구조에 의하면 로울러(12)와 이를 지지하는 슈우(14)가 면접촉을 하고 있기 때문에 무수히 많은 회전으로 인해 로울러(12)와 슈우(14)는 마모가 발생하게 되며 이에따라 로울러(12)의 지름이 감소되고 슈우(14)에서의 지지위치가 안쪽으로 이동하여 결국 로울러(12)와 캠면(15)의 접촉점이 달라지게 되므로써 연료분사량과 연료분사시기의 변경을 가져오게 되는 문제점이 지적되고 있다.However, according to the above structure, since the roller 12 and the shoe 14 supporting the surface 12 are in surface contact, the rollers 12 and the shoe 14 are abraded due to a myriad of rotations, and accordingly the roller 12 It is pointed out that the diameter of the fuel is reduced and the support position in the shoe 14 is moved inward, so that the contact point between the roller 12 and the cam surface 15 is changed, resulting in a change in fuel injection amount and fuel injection timing. have.

이에 본 발명은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 바는 로울러와 슈우의 마모를 방지하여 연료분사량 및 연료분사시기를 일정하게 유지토록하는 인너캠 방식의 인젝션 펌프를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above-described problems, and an object thereof is to provide an injection pump of an inner cam type to maintain a constant fuel injection amount and fuel injection time by preventing wear of a roller and a shoe.

본원 발명은 상기한 목적을 달성하기 위하여The present invention to achieve the above object

캠링과, 캠링의 캠표면을 따라 도는 로울러와, 로울러를 지지하는 슈우와, 연료를 압송하는 플런저를 포함하는 인너캠 방식의 인젝션 펌프에 있어서,In the inner cam injection pump including a cam ring, a roller that rotates along the cam surface of the cam ring, a shoe supporting the roller, and a plunger for pumping fuel,

상기 로울러는 슈우의 양측으로 돌설되는 지지부재에 의해 회전가능하게 지지되는 것임을 특징으로 하는 인너캠 방식의 인젝션 펌프를 요지로 하고 있다.The roller has an inner cam type injection pump, which is rotatably supported by support members protruding from both sides of the shoe.

도 1 은 본 발명에 의한 인너캠 방식의 인젝션 펌프를 나타내는 도면1 is a view showing an injection pump of the inner cam method according to the present invention

도 2 는 본 발명 로울러의 슈우에의 지지상태를 나타내는 도면2 is a view showing a support state of the shoe to the roller of the present invention.

도 3 은 종래기술3 is a prior art

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 캠링 2 : 캠면1: Cam ring 2: Cam surface

3 : 로울러 4 : 슈우3: Roller 4: Shoo

5 : 플런저 6 : 지지부재5 plunger 6 support member

7 : 회전자 8 : 공간7: rotor 8: space

이하 본 발명의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

도 1 은 본 발명에 의한 인너캠 방식의 인젝션 펌프를 나타내는 도면이며1 is a view showing the injection pump of the inner cam method according to the present invention.

도 2 는 본 발명의 로울러의 슈우에의 지지상태를 나타내는 도면이다.It is a figure which shows the support state of the shoe to the roller of this invention.

도면중 부호 1은 캠링으로서 캠링(1)의 내면은 요철형상의 궤적을 갖는 캠면(2)으로 형성되며 캠면(2)에 밀착하여 로울러(3)가 회전한다.In the drawing, reference numeral 1 denotes a cam ring, and an inner surface of the cam ring 1 is formed of a cam surface 2 having a concave-convex track, and the roller 3 rotates in close contact with the cam surface 2.

로울러(3)는 슈우(4)에 의해 지지되며 슈우(4)는 플런저(5)를 이동시킨다.The roller 3 is supported by the shoe 4 and the shoe 4 moves the plunger 5.

상기 로울러(3)는 슈우(4)의 양측으로 돌설되는 지지부재(6)에 의해 회전가능하게 지지되며 로울러(3)와 슈우(4)는 지지부재(6)에 의해 이격되어 있다.The roller 3 is rotatably supported by a support member 6 protruding to both sides of the shoe 4, and the roller 3 and shoe 4 are spaced apart by the support member 6.

이에따라 회전자(7)가 회전하면 로울러(3)가 캠링(1)의 캠면(2)을 따라 구름접촉을 하면서 돌게되며 캠면(2)의 형상에 의해 양측의 플런저(5)가 벌어졌다가 수축하면서 공간(8)내에 충진되는 연료를 압속하게 되는 것이며 로울러(3)는 슈우(4)와 지지부재(6)에 의한 지지점 접촉외에 직접접촉(즉 면접촉을 말함)되지 아니하므로 마모가 감소된다.Accordingly, when the rotor 7 rotates, the roller 3 rotates while making a rolling contact along the cam surface 2 of the cam ring 1, and the plunger 5 on both sides opens and contracts due to the shape of the cam surface 2. While the fuel filled in the space (8) is pressed and the roller (3) is not in direct contact (ie, surface contact) outside the contact point contact by the shoe 4 and the support member 6, wear is reduced. .

이상과 같은 본 발명에의한 인너캠 방식의 인젝션 펌프에 의하면 캠링을 따라 도는 로울러가 슈우의 양단에 돌설되는 지지부재에 의해 회전가능하게 지지되는 것에 의해서 회전시 슈우와의 면접촉이 일어나지 않게되어 마모가 감소되므로써 로울러 지름의 변경 및 슈우의 깊이 변화에 따른 연료분사량 및 분사시기 변화를 줄이게 되는 효과가 있다.According to the injection pump of the inner cam type according to the present invention as described above, the roller rotating along the cam ring is rotatably supported by the support member protruding from both ends of the shoe so that no surface contact with the shoe occurs during rotation. As the wear is reduced, the fuel injection amount and injection timing change due to the change of the roller diameter and the depth of the shoe are reduced.

Claims (1)

캠링과, 캠링의 캠표면을 따라 도는 로울러와, 로울러를 지지하는 슈우와, 연료를 압송하는 플런저를 포함하는 인너캠 방식의 인젝션 펌프에 있어서,In the inner cam injection pump including a cam ring, a roller that rotates along the cam surface of the cam ring, a shoe supporting the roller, and a plunger for pumping fuel, 상기 로울러는 슈우의 양측으로 돌설되는 지지부재에 의해 회전가능하게 지지되는 것임을 특징으로 하는 인너캠 방식의 인젝션 펌프.The roller is an inner cam injection pump, characterized in that rotatably supported by a support member protruding on both sides of the shoe.
KR1019960062886A 1996-12-07 1996-12-07 Inner-cam-type injection pump KR100212522B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960062886A KR100212522B1 (en) 1996-12-07 1996-12-07 Inner-cam-type injection pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960062886A KR100212522B1 (en) 1996-12-07 1996-12-07 Inner-cam-type injection pump

Publications (2)

Publication Number Publication Date
KR19980044761A KR19980044761A (en) 1998-09-05
KR100212522B1 true KR100212522B1 (en) 1999-08-02

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Application Number Title Priority Date Filing Date
KR1019960062886A KR100212522B1 (en) 1996-12-07 1996-12-07 Inner-cam-type injection pump

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KR19980044761A (en) 1998-09-05

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