JPS55164726A - Scavenge controlling apparatus for two-cycle internal combustion engine - Google Patents

Scavenge controlling apparatus for two-cycle internal combustion engine

Info

Publication number
JPS55164726A
JPS55164726A JP7185279A JP7185279A JPS55164726A JP S55164726 A JPS55164726 A JP S55164726A JP 7185279 A JP7185279 A JP 7185279A JP 7185279 A JP7185279 A JP 7185279A JP S55164726 A JPS55164726 A JP S55164726A
Authority
JP
Japan
Prior art keywords
scavenging ports
ports
opening
scavenging
turret
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.)
Granted
Application number
JP7185279A
Other languages
Japanese (ja)
Other versions
JPS6044496B2 (en
Inventor
Hisashi Takahashi
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
Priority to JP7185279A priority Critical patent/JPS6044496B2/en
Publication of JPS55164726A publication Critical patent/JPS55164726A/en
Publication of JPS6044496B2 publication Critical patent/JPS6044496B2/en
Expired 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
    • 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

  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE: To enable to keep a sufficiently large opening area of scavenging ports and a sifficiently long valve opening time if the starting point for opening the scavenging ports is delayed, by controlling opening and closing of upper ones of a scavenging ports, arranged in upper and lower two rows in the cylinder liner, by means of a control ring which is moved intermittently.
CONSTITUTION: With the time point for starting "opening" of exhaust valve being delayed as compared with that employed in conventional engines, high-pressure exhausting of combustion gas is started at an crank angle θ5. Although upper scavenging ports 12 are opened by piston 3 in the above high-pressure exhausting of combustion gas, scavenging is not started since control ring 14 is closed. When the crank angle becomes θ6 after passing of the above high-pressure exhausting of combustion gas having time length substantially equal to that of conventional engines, lower scavening ports 13 are opened. At the same time, turret 20 beings to turn and causes turning of control ring 14 via shaft 17 and pinion 16, so that upper scavenging ports 12 also begins to open. Rotation of turret 20 is continued until piston 3 comes to the bottom dead point and the lower scavenging ports 13 are fully opened (1/2 of the pitch of scavenging ports), but rotation of turret 20 is once interrupted at the point.
COPYRIGHT: (C)1980,JPO&Japio
JP7185279A 1979-06-09 1979-06-09 Scavenging air control device for 2-stroke internal combustion engine Expired JPS6044496B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7185279A JPS6044496B2 (en) 1979-06-09 1979-06-09 Scavenging air control device for 2-stroke internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7185279A JPS6044496B2 (en) 1979-06-09 1979-06-09 Scavenging air control device for 2-stroke internal combustion engine

Publications (2)

Publication Number Publication Date
JPS55164726A true JPS55164726A (en) 1980-12-22
JPS6044496B2 JPS6044496B2 (en) 1985-10-03

Family

ID=13472474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7185279A Expired JPS6044496B2 (en) 1979-06-09 1979-06-09 Scavenging air control device for 2-stroke internal combustion engine

Country Status (1)

Country Link
JP (1) JPS6044496B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815717A (en) * 1981-07-21 1983-01-29 Hitachi Zosen Corp Scavenging controller
JPS5815714A (en) * 1981-07-21 1983-01-29 Hitachi Zosen Corp Uniflow-scavenged engine with scavenging control valve
JPS5896014U (en) * 1981-12-24 1983-06-29 三菱重工業株式会社 diesel engine
JPS61194735U (en) * 1985-05-27 1986-12-04
EP1788218A2 (en) * 2005-11-18 2007-05-23 Mitsubishi Heavy Industries, Ltd. Internal combustion engine having scavenging control valve
JP2009115099A (en) * 2003-04-21 2009-05-28 Mitsubishi Heavy Ind Ltd Internal combustion engine equipped with scavenging control valve device
CN110439670A (en) * 2019-08-23 2019-11-12 中船动力研究院有限公司 Cylinder, engine, scavenging regulating device and control method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6279979U (en) * 1985-11-08 1987-05-22

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815717A (en) * 1981-07-21 1983-01-29 Hitachi Zosen Corp Scavenging controller
JPS5815714A (en) * 1981-07-21 1983-01-29 Hitachi Zosen Corp Uniflow-scavenged engine with scavenging control valve
JPS5896014U (en) * 1981-12-24 1983-06-29 三菱重工業株式会社 diesel engine
JPS61194735U (en) * 1985-05-27 1986-12-04
JP2009115099A (en) * 2003-04-21 2009-05-28 Mitsubishi Heavy Ind Ltd Internal combustion engine equipped with scavenging control valve device
JP4625526B2 (en) * 2003-04-21 2011-02-02 三菱重工業株式会社 Internal combustion engine equipped with scavenging control device
EP1788218A2 (en) * 2005-11-18 2007-05-23 Mitsubishi Heavy Industries, Ltd. Internal combustion engine having scavenging control valve
EP1788218A3 (en) * 2005-11-18 2012-07-25 Mitsubishi Heavy Industries, Ltd. Internal combustion engine having scavenging control valve
CN110439670A (en) * 2019-08-23 2019-11-12 中船动力研究院有限公司 Cylinder, engine, scavenging regulating device and control method

Also Published As

Publication number Publication date
JPS6044496B2 (en) 1985-10-03

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