EP1788218A3 - Internal combustion engine having scavenging control valve - Google Patents

Internal combustion engine having scavenging control valve Download PDF

Info

Publication number
EP1788218A3
EP1788218A3 EP06124274A EP06124274A EP1788218A3 EP 1788218 A3 EP1788218 A3 EP 1788218A3 EP 06124274 A EP06124274 A EP 06124274A EP 06124274 A EP06124274 A EP 06124274A EP 1788218 A3 EP1788218 A3 EP 1788218A3
Authority
EP
European Patent Office
Prior art keywords
control valve
scavenging
scavenging control
piston ring
scavenge
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06124274A
Other languages
German (de)
French (fr)
Other versions
EP1788218A2 (en
Inventor
Satoru Nagasaki Research & Dev. Center MITSUBISHI Murata
Shuichi KOBE Shipyard & Machinery Works Mitsubishi Yoshikawa
Sadao KOBE Shipyard & Machinery Works Mitsubishi Yoshihara
Jun KOBE Shipyard & Machinery Works Mitsubishi Yanagi
Hiroyuki KOBE Shipyard & Machinery Works Mitsubishi Ishida
Katsuo Ryonichi Engineering Co. LTD Kanazawa Div. Yodogawa
Yasu Ryonichi Engineering Co. LTD Kanazawa Div Tomiya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP1788218A2 publication Critical patent/EP1788218A2/en
Publication of EP1788218A3 publication Critical patent/EP1788218A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
    • 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 
    • F02F1/18—Other cylinders
    • F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention aims to provide an internal combustion engine equipped with a scavenging control valve, in which blow-by of combustion gas from the upper annular space above the top piston ring to the scavenging ports is prevented by which reduction in engine performance due to deposition of combustion gas residuum to the scavenge openings and occurrence of piston ring sticking due to deposition of combustion gas residuum to the piston rings can be prevented, and further the amount of working oil to drive the scavenging control valve can be reduced resulting in decreased energy loss for pressurizing the working oil. An annular-shaped scavenging control valve is fitted-in to a fitting face formed on the inner side of the cylinder liner movably in circumferential direction of the cylinder liner for opening and closing said scavenging ports in order to allow scavenge air to be supplied into the cylinder or interrupted, said scavenging control valve has a plurality of scavenge openings arranged along circumferential direction and in a plurality of stages in axial direction thereof so that the scavenge openings are brought into communication or discommunication with the scavenging ports of the cylinder liner by moving the scavenging control valve in circumferential direction thereof, and the scavenge openings of each stage has a height L1 which is smaller than a inside distance L2 between a top piston ring and a bottom piston ring equipped to a piston of the engine as shown in FIG.3.
EP06124274A 2005-11-18 2006-11-17 Internal combustion engine having scavenging control valve Withdrawn EP1788218A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005333970A JP4395474B2 (en) 2005-11-18 2005-11-18 Internal combustion engine equipped with scavenging control device

Publications (2)

Publication Number Publication Date
EP1788218A2 EP1788218A2 (en) 2007-05-23
EP1788218A3 true EP1788218A3 (en) 2012-07-25

Family

ID=37708284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06124274A Withdrawn EP1788218A3 (en) 2005-11-18 2006-11-17 Internal combustion engine having scavenging control valve

Country Status (4)

Country Link
EP (1) EP1788218A3 (en)
JP (1) JP4395474B2 (en)
KR (1) KR100777949B1 (en)
CN (1) CN100491707C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK179051B1 (en) * 2012-01-30 2017-09-18 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland Large two-stroke engine, inlet valve and cylinder liner
KR101901428B1 (en) 2014-10-30 2018-09-21 가부시키가이샤 아이에이치아이 Uniflow scavenging two-cycle engine
DE102015005316A1 (en) * 2015-04-27 2016-10-27 Thai Thanh An Valve device with slowly rotating rotary valves for internal combustion engines

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812323A (en) * 1929-06-10 1931-06-30 Davison Engineering Corp Internal combustion engine
JPS55164726A (en) * 1979-06-09 1980-12-22 Mitsubishi Heavy Ind Ltd Scavenge controlling apparatus for two-cycle internal combustion engine
JPS5896129A (en) * 1981-12-04 1983-06-08 Mitsubishi Heavy Ind Ltd Two-cycle internal-combustion engine
JPS5956310U (en) * 1982-10-05 1984-04-12 日立造船株式会社 Scavenging control valve device for internal combustion engine
US5109810A (en) * 1990-09-24 1992-05-05 Christenson Howard W Two cycle internal combustion hydrocycle engine
EP1471228A2 (en) * 2003-04-21 2004-10-27 Mitsubishi Heavy Industries, Ltd. Internal combustion engine equipped with a scavenging control valve apparatus
JP2006022734A (en) * 2004-07-08 2006-01-26 Mitsubishi Heavy Ind Ltd Internal combustion engine equipped with scavenging control valve device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029810B2 (en) * 1979-09-21 1985-07-12 三菱重工業株式会社 Scavenging device for 2-stroke internal combustion engine
JPS59192824A (en) * 1983-04-16 1984-11-01 Hitachi Zosen Corp Inner sleeve type scavenge and exhaust control valve
JPS61268822A (en) 1985-05-21 1986-11-28 Hitachi Zosen Corp Scavenging control device
US5020487A (en) * 1989-04-26 1991-06-04 Volkswagen Internal combustion engine with load-responsive valve control for combustion chamber scavenging
JPH04132857A (en) * 1990-09-25 1992-05-07 Mazda Motor Corp Fuel feeding device for engine
JPH04365930A (en) * 1991-06-13 1992-12-17 Mitsubishi Heavy Ind Ltd Two cycle uniflow scavenging engine having two-step scavenging port
JPH07324626A (en) * 1994-05-31 1995-12-12 Mitsubishi Heavy Ind Ltd Uniflow scavenging type two-cycle diesel engine with scavenging port control valve
JPH08334027A (en) * 1995-06-08 1996-12-17 Daihatsu Motor Co Ltd Two-cycle uniflow diesel engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812323A (en) * 1929-06-10 1931-06-30 Davison Engineering Corp Internal combustion engine
JPS55164726A (en) * 1979-06-09 1980-12-22 Mitsubishi Heavy Ind Ltd Scavenge controlling apparatus for two-cycle internal combustion engine
JPS5896129A (en) * 1981-12-04 1983-06-08 Mitsubishi Heavy Ind Ltd Two-cycle internal-combustion engine
JPS5956310U (en) * 1982-10-05 1984-04-12 日立造船株式会社 Scavenging control valve device for internal combustion engine
US5109810A (en) * 1990-09-24 1992-05-05 Christenson Howard W Two cycle internal combustion hydrocycle engine
EP1471228A2 (en) * 2003-04-21 2004-10-27 Mitsubishi Heavy Industries, Ltd. Internal combustion engine equipped with a scavenging control valve apparatus
JP2004340120A (en) * 2003-04-21 2004-12-02 Mitsubishi Heavy Ind Ltd Internal combustion engine provided with scavenging control valve device
JP2006022734A (en) * 2004-07-08 2006-01-26 Mitsubishi Heavy Ind Ltd Internal combustion engine equipped with scavenging control valve device

Also Published As

Publication number Publication date
CN100491707C (en) 2009-05-27
JP2007138834A (en) 2007-06-07
CN1982669A (en) 2007-06-20
KR20070053150A (en) 2007-05-23
KR100777949B1 (en) 2007-11-21
JP4395474B2 (en) 2010-01-06
EP1788218A2 (en) 2007-05-23

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Inventor name: TOMIYA, YASU RYONICHI ENGINEERING CO. LTD KANAZAWA

Inventor name: MURATA, SATORU MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor name: ISHIDA, HIROYUKI, MITSUBISHI HEAVY INDUSTRIES, LTD

Inventor name: YOSHIKAWA, SHUICHI, MITSUBISHI HEAVY INDUSTRIES, L

Inventor name: YANAGI, JUN, MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor name: YOSHIHARA, SADAO, MITSUBISHI HEAVY INDUSTRIES, LTD

Inventor name: YODOGAWA, KATSUO RYONICHI ENGINEERING CO. LTD KANA

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