KR930018141A - Floor combustion internal combustion engine - Google Patents

Floor combustion internal combustion engine Download PDF

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Publication number
KR930018141A
KR930018141A KR1019930002930A KR930002930A KR930018141A KR 930018141 A KR930018141 A KR 930018141A KR 1019930002930 A KR1019930002930 A KR 1019930002930A KR 930002930 A KR930002930 A KR 930002930A KR 930018141 A KR930018141 A KR 930018141A
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KR
South Korea
Prior art keywords
intake
combustion chamber
cylinder
vertical partition
combustion
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KR1019930002930A
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Korean (ko)
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KR950003738B1 (en
Inventor
히로미쯔 안도
오사무 히라코
쇼고 오오모리
쥰 타케무라
타이조 키타다
카쯔오 아키시노
야스키 타무라
미치히로 하타
킨이치 이와치도
마사유키 모토모치
순스케 마쯔오
노부아키 무라카이
케이조 후루카와
Original Assignee
나까무라 유이찌
미쯔비시지도오샤고오교오 가부시기가이샤
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Priority claimed from JP4044007A external-priority patent/JPH05240045A/en
Priority claimed from JP4253285A external-priority patent/JP2697513B2/en
Priority claimed from JP4255118A external-priority patent/JP2697514B2/en
Priority claimed from JP25679892A external-priority patent/JP3262380B2/en
Priority claimed from JP4256797A external-priority patent/JP2697517B2/en
Application filed by 나까무라 유이찌, 미쯔비시지도오샤고오교오 가부시기가이샤 filed Critical 나까무라 유이찌
Publication of KR930018141A publication Critical patent/KR930018141A/en
Application granted granted Critical
Publication of KR950003738B1 publication Critical patent/KR950003738B1/en

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    • 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
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • 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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/108—Siamese-type cylinders, i.e. cylinders cast together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B2031/006—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air intake valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/48—Tumble motion in gas movement in cylinder
    • 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
    • F02F2001/241—Cylinder heads specially adapted to pent roof shape of the combustion chamber
    • 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
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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

Abstract

본 발명은, 저연비운전을 목적으로, 연소실내에 혼합기의 농후한층을 생성하고, 이 농후한층에 점화하므로써, 전체적으로 공연비가 희박한 혼합기를 작화가능하게 하는 층현상연소내연기관에 관한 것으로서, 특히 층형상연소에 적합한 연소실 및 흡기포오트 구조를 개량한 층형상연소내연기관을 제공한는 것을 목적으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a layer developing combustion internal combustion engine which makes it possible to design a mixer having a low air-fuel ratio as a whole by generating a thick layer of a mixer in a combustion chamber and igniting the thick layer for the purpose of low fuel consumption. It is an object to provide a layered combustion internal combustion engine with an improved combustion chamber and intake port structure suitable for combustion.

본 층형상연소내연기관은, 연소실내에 연료농도가 서로 다른 층형상의 텀블흐름ㅇ르 생성한느 흡기포오트 및 연료공급수단을 구비하고 있다. 점화플러그는 연료가 진한 텀블흐름에 착화하돌고 연소실내에 설치되어 있다. 흡기포오트는, 동흡기포오트내를 2개의 통로로 구분하는 세로칸막이벽을 구비하고 있다. 이 세로칸막이벽은, 점화플러그의 둘레에 생성되는 혼합기의 텀블흐름중, 점화플러그에 가까운부분이 보다 진한 혼합기가 되도록 형성되어 있다. 또 세로칸막벽은, 흡기포오트내에 있어서의 밸브스템의 상류쪽에만 설치되고, 이에 의해, 실질적 유통단면적의 저하를 국력작게하고, 충분한 흡기량을 얻을 수 있는 것을 특징으로 한다.This laminar combustion internal combustion engine is provided with an intake port and fuel supply means which generate | occur | produce the laminar tumble flow of which fuel concentration differs in a combustion chamber. The spark plugs ignite the thick tumble stream of fuel and are installed in the combustion chamber. The intake port has a vertical partition wall that divides the inside of the intake port into two passages. The vertical partition wall is formed so that the portion close to the spark plug is made of a thicker mixer in the tumble flow of the mixer formed around the spark plug. In addition, the vertical partition wall is provided only on the upstream side of the valve stem in the intake port, whereby the reduction of the substantial flow cross-sectional area can be made smaller and the sufficient intake amount can be obtained.

Description

층형상연소내연기관Floor combustion internal combustion engine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 일실시예로서의 층형상 연소내연기관을 표시한 모식적사시도, 제2도는 흡기포오트의 요부구성을 표시한 모식적상면도로서, 제1도에 있어서의 A사시도, 제3도는 연소실의 요부구성을 표시한 모식적측면도로서 제1도에 있어서의 A'사시도.FIG. 1 is a schematic perspective view showing a layered combustion internal combustion engine as an embodiment of the present invention, and FIG. 2 is a schematic top view showing the main components of the intake port. FIG. 1 is a perspective view of FIG. A schematic side view showing the main part structure of a combustion chamber, A 'perspective view in FIG.

Claims (6)

실린더(24)내면과 동실린더(24)내에 끼워넣어지는 피스톤(26)의 상면과 실린더헤드하면(60)에 의해서 정해진 연소실(30)과, 상기 연소실(30)의 천정을 정하는 실린더헤드하면(60)의 대략중심에 설치된 점화수단(11)과, 각각 상기 실더헤드하면(60)에 있어서의 실린더축선(L)을 포함한 가상평면(FC)의 한쪽에 배설된 흡기개구를 가지고 흡기공기에 의해 상기 연소실(30)내의 거의 전체에 있어서 서로 평행하고 또한 같은 방향의 템블흐름을 생성하도록, 상기 각 흡기개구로부터 상기 실린더하면(60)에 따라서 상기 가상평면(FC)의 다른쪽을 향해서 흡기를 유입하는 2개의 흡기포오트(46A),(46B)와, 상기 각 흡기포오트(46A),(46B)를 가로지르는 밸브스템(57),(57)을 가지고, 상기 각 흡기개구를 개폐하는 흡기밸브(58)(58)와, 상기 각 흡기포오트(46A),(46B)내에 설치되고, 상기 각 흡기포오트(46A),(46B)내를, 상기 점화수단(11)쪽의 중앙쪽통로(4)와, 옆쪽통로(5)로 구분하는 세로칸막이벽(21),(21)과, 상기 각 흡기포오트(46A)(46B)의 각 중앙쪽통로(4)에 연료를 공급하고, 흡기행정에 있어서 상기 연소실(30)내에 층형상의 텀블흐름을 생성시키는 연료공급수단(12)을 구비하고, 상기 각 흡기밸브(58)(58)의 밸브스템(57)(57)에 있어서의 상기 중앙쪽 통로(4)에 면한 표면이, 상기 세로칸막이벽에 있어서의 상기 중앙쪽통로(4)에 면한 표면(121A)(121A)보다도, 상기 중앙쪽통로(4)의 중심쪽에 편의된 것을 특징으로 하는 층형상연소내연기관.The inner surface of the cylinder 24 and the cylinder head lower surface defining the ceiling of the combustion chamber 30 defined by the upper surface of the piston 26 inserted into the cylinder 24 and the cylinder head lower surface 60 and the combustion chamber 30 ( Ignition means 11 provided at approximately the center of the air, and an intake opening provided at one side of the imaginary plane FC including the cylinder axis L on the lower surface of the shield head 60, respectively. Intake air flows from the respective intake openings toward the other side of the imaginary plane FC along the lower surface of the cylinder 60 so as to generate a temporal flow parallel to each other and in the same direction almost in the combustion chamber 30. Intake air inlet opening and closing the intake openings having two intake ports 46A and 46B, and valve stems 57 and 57 crossing the respective intake ports 46A and 46B. Valves 58 and 58 and the respective intake ports 46A and 46B, respectively, The vertical partition walls 21 and 21 which divide the inside of bubble circumference 46A, 46B into the center passage 4 of the said ignition means 11, and the side passage 5, and each said It is provided with fuel supply means 12 which supplies fuel to each center passage 4 of intake port 46A, 46B, and produces | generates a layered tumble flow in the said combustion chamber 30 in an intake stroke. The surface facing the central passage 4 in the valve stems 57 and 57 of the intake valves 58 and 58 is connected to the central passage 4 in the vertical partition wall. A layered combustion internal combustion engine, characterized by being more biased toward the center of the central passage 4 than the facing surfaces 121A and 121A. 제1항에 있어서, 상기 흡기밸브(58)(58)의 밸브스템(57)(57)에 있어서의 상기 옆쪽통로(5)에 면한 표면이, 상기 각 게로칸막이벽(21)(21)에 있어서의 상기 옆쪽통로(5)에 면한 표면과 거의 면 일치하는 것을 특징으로 하는 층형상연소내연기관.The surface of the intake valves 58, 58 facing the side passages 5 of the valve stems 57, 57 is formed on the respective gero partition walls 21, 21. The layered combustion internal combustion engine, characterized by substantially coinciding with the surface of the side passage (5) in the present invention. 제1항에 있어서, 상기 흡기밸브(58)(58)의 밸브스템(57)(57)에 있어서의 상기 옆쪽통로(5)에 면한 표면이, 상기 각 세로칸막이벽(21)(21)에 있어서의 상기 옆쪽통로(5)에 면한 표면보다도, 상기 옆쪽통로(5)의 중심쪽에 편의된 것을 특징으로 하는 층형상연소내연기관.The surface of the intake valves 58, 58 facing the side passages 5 of the valve stems 57, 57 is formed on the vertical partition walls 21, 21, respectively. A layered combustion internal combustion engine, characterized in that it is biased toward the center of the side passages (5) rather than the surface facing the side passages (5). 제1항에 있어서, 상기 각 흡기밸브(58)(58)의 밸브스템(57)(57)의 외경이, 상기 각 세로칸막이벽(21)(21)의 두께보다도 큰 것을 특징으로하는 층형상연소내연기관,The outer diameter of the valve stems 57 and 57 of each of the intake valves 58 and 58 is larger than the thickness of each of the vertical partition walls 21 and 21. Combustion internal combustion engine, 실린더(24)내면과 동실린더(24)내에 끼워넣어지는 피스톤(26)의 상면(34)와 실린더헤드하면(60)에 의해서 정해진 연소실(30)과, 상기 연소실(30)의 천정을 정하는 실린더헤드하면(60)의 대략중심에 설치된 점화수단(11)과, 각각 상기 실린더헤드하면(60)에 있어서의 실린더축선(L)을 포함한 가상평면(FC)의 한쪽에 배설된 흡기개구를 가지고 흡기공기에 의해 상기 연소실(30)내의 거의 전체에 있어서 서로 평행하고 또한 같은 방향의 템블흐름을 생성하도록, 상기 각 흡기개구로부터 상기 실린더하면(60)에 따라서 상기 가상평면(FC)의 다른쪽을 향해서 흡기를 유입하는 2개의 흡기포오트(46A),(46B)와, 상기 각 흡기포오트(46A),(46B)를 가로지르는 밸브스템(57),(57)을 각각 가지고, 상기 각 흡기개구를 개폐하는 흡기밸브(58)(58)와, 상기 각 흡기포오트(46A),(46B)내에 설치되어, 각각 각 흡기포오트(46A)(46B)내를, 상기 점화수단(11)쪽의 중앙쪽통로(4)와, 옆쪽통로(5)로 구분하는 세로칸막이벽(21)(21)과, 상기 각 흡기포오트(46A)(46B)의 각 중앙쪽통로(4)에 연료를 공급하고, 흡기행정에 있어서 상기 연소실(30)내에 층형상의 텀블흐름을 생성시키는 연료공급수단(12)을 구비하고, 상기 각 세로칸막이벽(21)(21)에 있어서의 상기 중앙쪽통로(4)에 면한 표면의(121A)(121A)의 하류쪽단부가, 동단부에 상류쪽부분보다도 중심쪽에 편의된 것을 특징으로 하는 층형상연소내연기관.A cylinder defining the combustion chamber 30 and the ceiling of the combustion chamber 30 defined by the upper surface 34 and the cylinder head lower surface 60 of the piston 26 inserted into the cylinder 24 and the inner surface of the cylinder 24. Intake air having an intake opening disposed on one side of the imaginary plane FC including the cylinder axis L on the cylinder head lower surface 60 and the ignition means 11 provided at the center of the head lower surface 60, respectively. From the respective intake openings toward the other side of the imaginary plane FC along the cylinder surface 60 from each of the intake openings so that the air flows in parallel with each other and in the same direction in the combustion chamber 30 almost in the combustion chamber 30. Each of the intake openings 46A and 46B for introducing intake air, and valve stems 57 and 57 crossing the respective intake ports 46A and 46B, respectively. The intake valves 58 and 58 for opening and closing the openings and the intake ports 46A and 46B. Each of the intake ports 46A and 46B includes vertical partition walls 21 and 21 that divide the inside of the ignition means 11 into a central passage 4 and a lateral passage 5. It is provided with fuel supply means 12 which supplies fuel to each center passage 4 of each intake port 46A, 46B, and produces | generates a layered tumble flow in the said combustion chamber 30 in an intake stroke. The downstream ends of the surfaces 121A and 121A facing the central passage 4 in the vertical partition walls 21 and 21 are biased toward the center rather than the upstream portions at the same ends. Layered combustion internal combustion engine, characterized in that. 실린더(24)내면과 동실린더(24)내에 끼워넣어지는 피스톤(26)의 상면(34)과 실린더헤드하면(60)에 의해서 정해진 연소실(30)과, 상기 연소실(30)의 천정을 정하는 실린더헤드하면(60)의 거의중심에 설치된 점화수단(110)과, 각각 상기 실린더헤드하면(60)에 있어서의 실린더축선(L)을 포함한 가상평면(FC)의 한쪽에 배설된 흡기개구를 가지고 또한 같은 방향의 템블흐름을 생성하도록, 상기 각 흡기개구로부터 상기 실린더하면(60)에 따라서 상기 가상평면(FC)의 다른쪽을 향해서 흡기를 유입하는 2개의 흡기포오트(46A),(46B)와, 상기 각 흡기포오트(46A),(46B)를 가로지르는 밸브스템(57),(57)을 각각 가지고, 상기 각 흡기개구를 개폐하는 흡기밸브(58)(58)와, 상기 각 흡기포오트(46A),(46B)내에 설치되어 각각 각흡기포오트(46A)(46B)내를 상기 점화수단(11)쪽의 중앙쪽통로(4)와, 옆쪽통로(5)로 구분하는 세로칸막이벽(21)(21)과, 상기 각 흡기포오트(46A)(46B)의 각 중앙쪽통로(4)에 연료를 공급하고, 흡기행정에 있어서 상기 연소실(30)내에 층형상의 텀블흐름을 생성시키는 연료공급수단(12)을 구비하고, 상기 각 세로칸막이벽(21)(21)이, 상기 각 흡기포오트(46A)(46B)내에 있어서의 상기 각 밸브스템(57)(57)보다도 상류쪽에만 설치된 것을 특징으로 하는 층형상연소내연기관.A cylinder defining the combustion chamber 30 and the ceiling of the combustion chamber 30 defined by the upper surface 34 and the cylinder head lower surface 60 of the piston 26 inserted into the cylinder 24 and the inner surface of the cylinder 24. It has an intake opening provided on one side of the imaginary plane FC including the cylinder axis L in the said cylinder head lower surface 60, and the ignition means 110 provided in the substantially center of the head lower surface 60, respectively. Two intake ports 46A and 46B which flow intake air from the intake openings toward the other side of the virtual plane FC from the respective intake openings to the other side of the imaginary plane FC so as to generate a temporal flow in the same direction; And intake valves 58 and 58 for opening and closing the intake openings, respectively, having valve stems 57 and 57 crossing the intake ports 46A and 46B, respectively. The central passage 4 on the side of the ignition means 11 and installed in each of the intake ports 46A and 46B, respectively; Fuel is supplied to the vertical partition walls 21 and 21 divided by the side passages 5 and the central passages 4 of the intake ports 46A and 46B, and the combustion chamber in the intake stroke. A fuel supply means 12 for generating a layered tumble flow in the 30 is provided, wherein each of the vertical partition walls 21 and 21 is formed in the intake ports 46A and 46B. A layered combustion internal combustion engine characterized by being provided only upstream from each valve stem (57) (57). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930002930A 1992-02-28 1993-02-27 Stratified burning i.c. engine KR950003738B1 (en)

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
JP92-44007 1992-02-28
JP4044007A JPH05240045A (en) 1992-02-28 1992-02-28 Swirl generating internal combustion engine
JP4253285A JP2697513B2 (en) 1992-03-27 1992-09-22 Intake port structure of internal combustion engine
JP92-253285 1992-09-22
JP92-255118 1992-09-24
JP4255118A JP2697514B2 (en) 1992-09-24 1992-09-24 Intake port structure of stratified combustion internal combustion engine
JP25679892A JP3262380B2 (en) 1992-09-25 1992-09-25 Intake port structure of stratified combustion internal combustion engine
JP92-256799 1992-09-25
JP92-257046 1992-09-25
JP92-256798 1992-09-25
JP4256797A JP2697517B2 (en) 1992-09-25 1992-09-25 Intake port structure of internal combustion engine
JP25679992 1992-09-25
JP4257046A JP2697518B2 (en) 1992-03-27 1992-09-25 Intake port structure of internal combustion engine
JP92-256797 1992-09-25

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KR930018141A true KR930018141A (en) 1993-09-21
KR950003738B1 KR950003738B1 (en) 1995-04-18

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KR1019930002929A KR960013098B1 (en) 1992-02-28 1993-02-27 Internal combustion engine

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