KR100248215B1 - Multiple piston pump - Google Patents

Multiple piston pump Download PDF

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Publication number
KR100248215B1
KR100248215B1 KR1019970069086A KR19970069086A KR100248215B1 KR 100248215 B1 KR100248215 B1 KR 100248215B1 KR 1019970069086 A KR1019970069086 A KR 1019970069086A KR 19970069086 A KR19970069086 A KR 19970069086A KR 100248215 B1 KR100248215 B1 KR 100248215B1
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KR
South Korea
Prior art keywords
cam
pump
pump housing
head body
profiles
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KR1019970069086A
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Korean (ko)
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KR19990050046A (en
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장욱희
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박상록
주식회사두원정공
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Priority to KR1019970069086A priority Critical patent/KR100248215B1/en
Publication of KR19990050046A publication Critical patent/KR19990050046A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/141—Intermediate liquid piston between the driving piston and the pumped liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/144—Adaptation of piston-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)

Abstract

본 발명은 다수의 피스톤을 캠 프로파일(Cam Profile)에 의해 동시에 작동토록 하므로서 고압형성에 유리하여 펌프의 성능을 극대화 할 수 있는 고압발생용 멀티플(Multiple) 피스톤 펌프에 관한 것으로, 펌프하우징내에 드라이브 샤프트를 설치하여 그 축상에 피드펌프와 캠, 펄스기어를 설치하고, 캠에는 다수의 프로파일(Profile)을 형성하며 그 높이의 차만큼 왕복 운동을 할 수 있도록 프로파일의 수와 같은 수의 피스톤을 펌프하우징의 일단에 설치된 헤드바디내에 피스톤실을 형성하여 스프링으로 탄설하고, 각 피스톤실을 유로로 연결하여 이를 헤드바디의 중앙에 설치되어 델리버리밸브까지 연결형성되어 있는 하나의 유로와 연결하여 구성하며, 상기 캠과 펌프하우징사이에 롤러를 설치하여 구성하되, 펌프하우징의 외측 상부에는 연료흡입구와, 픽업센서(Pickup Sensor), 오버플로우 밸브를 설치하며, 헤드바디의 외부 상측에는 압력조절밸브를 내부의 유로와 연결하여 구성한 것이다.The present invention relates to a multiple piston pump for high pressure generation, which is capable of maximizing the performance of a pump by advantageously forming a high pressure by operating a plurality of pistons simultaneously by a cam profile, and a drive shaft in the pump housing. To install the feed pump, cam and pulse gear on the shaft, and to form a number of profiles on the cam and pump housing the number of pistons equal to the number of profiles to reciprocate by the difference of the height The piston chamber is formed in the head body installed at one end of the tank body, and it is constructed with springs, and each piston chamber is connected by a flow path, which is connected to one flow path formed at the center of the head body and connected to the delivery valve. The roller is installed between the cam and the pump housing, but the fuel inlet and the pickup are located at the outer upper portion of the pump housing. Standing (Pickup Sensor), and install the overflow valve, the outer upper side of the head body is configured to connect the pressure control valve and the inner channel.

Description

고압발생용 멀티플 피스톤 펌프High pressure multiple piston pump

본 발명은 다수의 피스톤을 캠 프로파일(Cam Profile)에 의해 동시에 작동토록 하므로서 고압형성에 유리하여 펌프의 성능을 극대화 할 수 있는 고압발생용 멀티플(Multiple) 피스톤 펌프에 관한 것이다.The present invention relates to a multiple piston pump for high pressure generation that can maximize the performance of the pump to favor the high pressure by operating a plurality of pistons at the same time by the Cam Profile (Cam Profile).

종래의 분배식 펌프는 도 1의 도시와 같이 드라이브 샤프트(200)는 베어링에 의해 펌프하우징(100)에 지지되어 있고, 드라이브 샤프트(200)에는 휘드펌프(600)가 설치되어 있으며, 축의 선단에는 캠디스크(300)를 구동하기 위한 러그(lug)가 가공되어 있다.In the conventional dispensing pump, as shown in FIG. 1, the drive shaft 200 is supported by the pump housing 100 by a bearing, and the drive shaft 200 is provided with a feed pump 600, and at the tip of the shaft. A lug for driving the cam disc 300 is machined.

캠디스크(300)는 드라이브 샤프트(200) 러그에 끼워진 십자형의 요크(Yoke)에 자신의 러그가 끼워지는 형태로 연결되어 있다.The cam disk 300 is connected to the cruciform yoke fitted to the lug of the drive shaft 200 in such a manner that its lug is fitted.

십자형 요크 외측에는 펌프하우징에 지지된 롤러링(Roller Ring)이 설치되어 있다. 그리고 캠디스크(300)의 캠면(Cam Surface)은 스프링 장력에 의해 이 롤러링의 롤러에 밀착되어 있다.Outside the cruciform yoke, a roller ring supported by the pump housing is installed. The cam surface of the cam disk 300 is in close contact with the roller of this roller ring by spring tension.

따라서 구동축이 회전운동하면서 캠디스크(300)는 회전운동하면서 동시에 왕복운동을 하게 된다. 즉, 캠디스크(300)는 드라이브 샤프트(200)의 회전속도와 같은 속도로 회전하면서 동시에 캠의 양정(lift)만큼 왕복운동하게 된다.Therefore, while the drive shaft rotates, the cam disc 300 rotates and reciprocates at the same time. That is, the cam disk 300 is rotated at the same speed as the rotational speed of the drive shaft 200 and at the same time reciprocating by the lift (lift) of the cam.

캠디스크(300)의 운동은 캠디스크(300) 뒷면에 설치된 플런져(400)에 그대로 전달되는 것이다.The movement of the cam disc 300 is transmitted as it is to the plunger 400 installed on the back of the cam disc 300.

플런져(400)는 하이드롤릭-헤드(hydraulic head)내에 가공된 플런져배럴 내에서 회전 및 왕복운동하게 되며, 하이드롤릭 헤드에는 전자식 연료공급 차단밸브, 공기빼기 볼트가 부착된 스크루 플러그, 델리버리밸브(500) 등이 설치되어 있다.The plunger 400 rotates and reciprocates in a plunger barrel machined in a hydraulic head. The hydraulic head has an electronic fuel shutoff valve, a screw plug with a bleed bolt, and a delivery. The valve 500 etc. are provided.

그러나 상기와 같은 구성의 분배형 펌프는 드라이브 샤프트에 구동디스크로 연결된 한개의 캠디스크에 한개의 플런져가 연결되어 압력을 형성하여 분배 압송하는 구조로 되어 있기 때문에 고압형성이 어려운 문제점이 있었다.However, the distribution type pump of the above configuration has a problem in that high pressure formation is difficult because one plunger is connected to one cam disk connected to the drive shaft by a drive disk to form pressure to distribute pressure.

본 발명은 상기와 같은 문제점을 해결코저, 캠 프로파일(Cam Profile)의 수와 같은 다수의 피스톤을 설치하여 하나의 유로를 통해 연료를 동시에 흡입 및 압축, 분사할 수 있도록 구성하므로서 고압형성이 유리하도록 하여 펌프의 성능을 극대화 할 수 있는 고압발생용 멀티플 피스톤 펌프를 제공코저 한 것이다.The present invention solves the above problems by installing a plurality of pistons, such as the number of cam profiles (Cam Profile), so that the high-pressure formation is advantageous because it is configured to simultaneously suck, compress, and inject fuel through a single flow path It is to provide multiple piston pump for high pressure generation that can maximize pump performance.

도 1 은 종래 분배형 펌프의 단면설명도.1 is a cross-sectional explanatory view of a conventional distribution pump.

도 2 는 본 발명 멀티플 피스톤 펌프의 단면 설명도.2 is an explanatory cross-sectional view of the multiple piston pump of the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1 : 펌프하우징 2 : 드라이브 샤프트1: pump housing 2: drive shaft

3 : 피드펌프 4 : 연료흡입구3: feed pump 4: fuel intake

5 : 픽업 센서 6 : 펄스기어5: pickup sensor 6: pulse gear

7 : 롤러 8 : 캠7: roller 8: cam

9 : 오버플로우 밸브 10 : 압력조절밸브9: overflow valve 10: pressure regulating valve

11 : 델리버리밸브 12 : 헤드 바디11: delivery valve 12: head body

13,13' : 피스톤 14,14' : 피스톤실13,13 ': Piston 14,14': Piston seal

15 : 캠 프로파일 16,16' : 스프링15: Cam Profile 16,16 ': Spring

17,17' : 유로 18 : 유로17,17 ': Euro 18: Euro

이하 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 단면설명도로서, 펌프하우징(1)내에 드라이브 샤프트(2)를 설치하여 그 축상에 피드펌프(3)와 캠(8), 펄스기어(6)를 설치하고, 캠(8)에는 다수의 프로파일(Profile)을 형성하며 그 높이의 차만큼 왕복 운동을 할 수 있도록 프로파일의 수와 같은 수의 피스톤(13)(13')을 펌프하우징(1)의 일단에 설치된 헤드바디(12)내에 피스톤실(14)(14')을 형성하여 스프링(16)(16')으로 탄설하고, 각 피스톤실(14)(14')을 유로(17)(17')로 연결하여 이를 헤드바디(12)의 중앙에 설치되어 델리버리밸브(11)까지 연결형성되어 있는 하나의 유로(18)와 연결하여 구성하며, 상기 캠(8)과 펌프하우징(1)사이에 롤러(7)를 설치하여 구성하되, 펌프하우징(1)의 외측 상부에는 연료흡입구(4)와, 픽업센서(Pickup Sensor)(5), 오버플로우 밸브(9)를 설치하며, 헤드바디(12)의 외부 상측에는 압력조절밸브(10)를 내부의 유로와 연결하여 구성한 것이다.FIG. 2 is a cross-sectional explanatory view of the present invention, in which a drive shaft 2 is installed in the pump housing 1, a feed pump 3, a cam 8, and a pulse gear 6 are installed on the shaft, and a cam ( 8) The head body is provided at one end of the pump housing 1 with the same number of pistons 13 and 13 'as the number of profiles so as to form a plurality of profiles and to reciprocate by the difference of their heights. Piston chambers 14 and 14 'are formed in the spring 12, and they are coalesced with the springs 16 and 16', and each of the piston chambers 14 and 14 'is connected to the flow paths 17 and 17'. It is installed in the center of the head body 12 and connected to the one flow path 18 formed to the delivery valve 11 is formed, and the roller (7) between the cam (8) and the pump housing (1) ), But the fuel inlet (4), the pickup sensor (5), the overflow valve (9) is installed on the outer upper portion of the pump housing (1), the outside of the head body (12) Pressure tank on the upper side It is configured by connecting the valve 10 and the internal flow path.

드라이브 샤프트(1)가 회전하면서 피드펌프(3) 및 캠(8)을 회전 시켜 연료흡입구(4)로 유입된 연료를 피드펌프(3)에 의해 펌프하우징(1)내로 압송 시키는 것이다.As the drive shaft 1 rotates, the feed pump 3 and the cam 8 are rotated to feed the fuel introduced into the fuel inlet 4 into the pump housing 1 by the feed pump 3.

이때, 드라이브 샤프트(2)에 설치되어 있는 펄스기어(Pulse Gear)(6)를 회전시키게 되고, 펌프하우징(1)의 외측 상부에 설치된 픽업센서(5)에 의해 펄스기어(6)에서 발생하는 펄스를 감지하여 캠(8)의 위치 및 피드펌프(3)의 회전수를 감지하는 것이다.At this time, the pulse gear (6) installed in the drive shaft (2) is rotated, and the pick-up sensor (5) installed on the outer upper portion of the pump housing (1) generated in the pulse gear (6) By detecting the pulse to detect the position of the cam 8 and the rotation speed of the feed pump (3).

또한, 캠(8)이 회전하면서 4~6개의 캠 프로파일(15)과 면접되어 스프링(16)(16')으로 탄설되어 있는 피스톤(14)(14')이 캠 프로파일(15)의 높이 만큼 왕복운동 하면서 다수의 피스톤(14)(14')이 동시에 연료를 흡입 또는 압축하게 되는 것이다.In addition, as the cam 8 rotates, the pistons 14 and 14 ', which are interviewed with the four to six cam profiles 15 and are piled up with the springs 16 and 16', are as high as the cam profile 15. In the reciprocating motion, a plurality of pistons 14 and 14 'simultaneously suck or compress fuel.

피스톤(14)(14')이 연료를 압축할 경우 드라이브 샤프트(2)방향으로 축력을 받게 되기 때문에 펌프하우징(1)과 캠(8)사이에 롤러(7)를 설치하여 드라이브 샤프트(2)에 받게되는 축력을 감소시킬 수 있도록 한 것이다.When the pistons 14 and 14 'compress the fuel, they receive an axial force in the direction of the drive shaft 2, so that a roller 7 is provided between the pump housing 1 and the cam 8 to drive the shaft 2. To reduce the axial force it receives.

또한, 펌프하우징(1)의 상측 외주면에 설치되어 있는 오버플로우 밸브(9)는 펌프하우징(1)내의 실압이 일정압 이상이 되면 연료탱크 쪽으로 스필(Spill)되도록 하는 것이며, 압력조절밸브(10)는 연료의 흡입량과 토출량을 조절하여 분사량과 분사압을 조절하며, 델리버리밸브(11)는 분사압이 델리버리밸브(11)의 개변압을 이기게 되면 커먼레일(Common Rail)쪽으로 분사된 연료를 송출하게 하는 것이다.In addition, the overflow valve 9 provided on the upper outer circumferential surface of the pump housing 1 is to spill into the fuel tank when the actual pressure in the pump housing 1 becomes higher than a predetermined pressure. ) Controls the injection amount and the injection pressure by adjusting the intake and discharge amount of the fuel, the delivery valve 11 is the fuel injected toward the common rail when the injection pressure exceeds the opening pressure of the delivery valve (11) It is to send out.

이와 같이 구성된 본 발명 고압발생용 멀티플 피스톤펌프의 작용을 보면 드라이브 샤프트(2)와 피드펌프(3)가 회전하면서 연료흡입구(4)로 들어온 연료를 펌프하우징(1)내로 압송시키는 것인데, 이때, 헤드바디(12)에 피스톤실(14)(14')과 연결된 이송통로로 연료가 들어가게 되고 압력조절밸브(10)에 의해 연료량이 조절되어 이송되며 캠 프로파일을 따라 캠 프로파일 수만큼의 피스톤(13)(13')이 동시에 하강하면서 연료를 동시에 피스톤실(14)(14')로 흡입하고, 캠(8)이 회전함에 따라 다시 피스톤(13)(13')이 압축하여 연료를 델리버리벨브(11)쪽으로 압송하게 되는 것이다.When the action of the multiple pressure piston pump for generating a high pressure of the present invention configured as described above is to drive the fuel entering the fuel inlet 4 while the drive shaft 2 and the feed pump 3 are rotated, and in this case, Fuel enters the transfer path connected to the piston chambers 14 and 14 'to the head body 12, and the fuel amount is controlled and transferred by the pressure regulating valve 10. 13 'are simultaneously lowered and the fuel is sucked into the piston chamber 14 and 14' at the same time, and as the cam 8 rotates, the piston 13 and 13 'are compressed again to deliver the fuel to the delivery valve. Will be sent to (11).

이때, 각 피스톤실(14)(14')의 유로(17)(17')가 한개의 유로(18)로 합쳐지기 때문에 고압이 형성되는 것이다.At this time, since the flow paths 17 and 17 'of the piston chambers 14 and 14' are combined into one flow path 18, high pressure is formed.

이와 같이 종래의 분배형 펌프에서는 한개의 플런져로 흡입 및 압축을 하기 때문에 고압형성에 불리하지만 상기와 같은 구성의 멀티플 피스톤 펌프는 여러개의 피스톤이 동시에 흡입 및 압축을 하기 때문에 고압형성이 유리한 것이다.As described above, in the conventional dispensing pump, since the suction and compression is performed by one plunger, it is disadvantageous to the high pressure formation. However, the multiple piston pump of the above configuration is advantageous because the multiple pistons suction and compress at the same time.

상기와 같이 본 발명 고압발생용 멀티플 피스톤펌프는 캠 프로파일(Cam Profile)의 수와 같은 다수의 피스톤을 설치하여 하나의 유로를 통해 연료를 동시에 흡입 및 압축할 수 있도록 구성하므로서 고압형성이 유리하도록 하여 펌프의 성능을 극대화 할 수 있는 효과가 있는 것이다.As described above, the multiple piston pump for high pressure generation of the present invention is configured to be able to suck and compress fuel simultaneously through one flow path by installing a plurality of pistons such as the number of cam profiles so that high pressure is advantageously formed. The effect is to maximize the performance of the pump.

Claims (1)

펌프하우징(1)내에 드라이브 샤프트(2)를 설치하여 그 축상에 피드펌프(3)와 캠(8), 펄스기어(6)를 설치하고, 캠(8)에는 다수의 프로파일(Profile)을 형성하며 그 높이의 차만큼 왕복 운동을 할 수 있도록 프로파일의 수와 같은 수의 피스톤(13),(13')을 펌프하우징(1)의 일단에 설치된 헤드바디(12)내에 피스톤실(14)(14')을 형성하여 스프링(16)(16')으로 탄설하고, 각 피스톤실(14)(14')을 유로(17)(17')로 연결하여 이를 헤드바디(12)의 중앙에 설치되어 델리버리밸브(11)까지 연결형성되어 있는 하나의 유로(18)와 연결하여 구성하며, 상기 캠(8)과 펌프하우징(1)사이에는 롤러(7)를 설치하여 구성하되, 펌프하우징(1)의 외측 상부에는 연료흡입구(4)와, 픽업센서(5), 오버플로우 밸브(9)를 설치하며, 헤드바디(12)의 외부 상측에는 압력조절밸브(10)를 내부의 유로와 연결하여 구성함을 특징으로 하는 고압발생용 멀티플 피스톤펌프.The drive shaft 2 is installed in the pump housing 1, and the feed pump 3, the cam 8, and the pulse gear 6 are installed on the shaft, and the cam 8 has a large number of profiles. The piston chamber 14 (in the head body 12 installed at one end of the pump housing 1) has the same number of pistons 13 and 13 'as the number of profiles so as to reciprocate by the difference in height. 14 '), which is loaded with springs 16, 16' and connected to each piston chamber 14, 14 'with flow paths 17, 17' and installed in the center of the head body 12. It is configured to connect to the one flow path 18 is connected to the delivery valve (11), and between the cam 8 and the pump housing (1) by installing a roller (7), the pump housing ( A fuel inlet 4, a pickup sensor 5, and an overflow valve 9 are installed at an upper portion of the outer side of the 1), and a pressure regulating valve 10 is connected to an internal flow path at an outer upper side of the head body 12. Configuration Multiple-piston pump for high pressure generation, characterized by.
KR1019970069086A 1997-12-16 1997-12-16 Multiple piston pump KR100248215B1 (en)

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KR1019970069086A KR100248215B1 (en) 1997-12-16 1997-12-16 Multiple piston pump

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KR1019970069086A KR100248215B1 (en) 1997-12-16 1997-12-16 Multiple piston pump

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KR100248215B1 true KR100248215B1 (en) 2000-04-01

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