JPS5618021A - Port scavenging 2-cycle engine - Google Patents

Port scavenging 2-cycle engine

Info

Publication number
JPS5618021A
JPS5618021A JP9293479A JP9293479A JPS5618021A JP S5618021 A JPS5618021 A JP S5618021A JP 9293479 A JP9293479 A JP 9293479A JP 9293479 A JP9293479 A JP 9293479A JP S5618021 A JPS5618021 A JP S5618021A
Authority
JP
Japan
Prior art keywords
combustion chamber
subscavenging
valve
internal pressure
gas
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
JP9293479A
Other languages
Japanese (ja)
Other versions
JPS6259210B2 (en
Inventor
Hiromitsu Matsumoto
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co 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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP9293479A priority Critical patent/JPS5618021A/en
Publication of JPS5618021A publication Critical patent/JPS5618021A/en
Publication of JPS6259210B2 publication Critical patent/JPS6259210B2/ja
Granted 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

  • Supercharger (AREA)

Abstract

PURPOSE: To improve the scavenging operation of an engine and reduce its fuel consumption, by forming a subscavenging port to direct toward the direction of diagonally crossing a combustion chamber upward and providing a valve for permitting only the flow motion of new gas into the combustion chamber in the subscavenging passage.
CONSTITUTION: When a piston 6 begins to open subscavenging ports 40a, 40b, fresh gas, in a state of increasing its pressure in a crank chamber 16, flows into a combustion chamber 9 in accordance with a change of internal pressure of the combustion chamber 9, accordingly the fresh gas passes through a valve 43 to flow into the combustion chamber. The fresh gas flowing out from the subscavenging ports 40a, 40b acts to push burnt gas from behind to an exhaust port 30, to promote the exhaust operation. At the moment with a higher internal pressure in the combustion chamber 9 than the internal pressure in the crank chamber 16, the valve 43 acts to block a reverse flow of the burnt gas to the crank chamber 16.
COPYRIGHT: (C)1981,JPO&Japio
JP9293479A 1979-07-21 1979-07-21 Port scavenging 2-cycle engine Granted JPS5618021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9293479A JPS5618021A (en) 1979-07-21 1979-07-21 Port scavenging 2-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9293479A JPS5618021A (en) 1979-07-21 1979-07-21 Port scavenging 2-cycle engine

Publications (2)

Publication Number Publication Date
JPS5618021A true JPS5618021A (en) 1981-02-20
JPS6259210B2 JPS6259210B2 (en) 1987-12-10

Family

ID=14068306

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9293479A Granted JPS5618021A (en) 1979-07-21 1979-07-21 Port scavenging 2-cycle engine

Country Status (1)

Country Link
JP (1) JPS5618021A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110017183A1 (en) * 2009-07-24 2011-01-27 Yamabiko Corporation Two-stroke internal combustion engine
JP2014214728A (en) * 2013-04-30 2014-11-17 株式会社マキタ Laminar scavenging 2-stroke engine
JP2014214727A (en) * 2013-04-30 2014-11-17 株式会社マキタ Laminar scavenging 2-stroke engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421714U (en) * 1977-07-15 1979-02-13

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5211788A (en) * 1975-07-18 1977-01-28 Futaba Corp Method of manufacturing p-n junction type solar battery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421714U (en) * 1977-07-15 1979-02-13

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110017183A1 (en) * 2009-07-24 2011-01-27 Yamabiko Corporation Two-stroke internal combustion engine
US8353262B2 (en) * 2009-07-24 2013-01-15 Yamabiko Corporation Two-stroke internal combustion engine
JP2014214728A (en) * 2013-04-30 2014-11-17 株式会社マキタ Laminar scavenging 2-stroke engine
JP2014214727A (en) * 2013-04-30 2014-11-17 株式会社マキタ Laminar scavenging 2-stroke engine
US9719416B2 (en) 2013-04-30 2017-08-01 Makita Corporation Stratified scavenging two-stroke engine
US9726070B2 (en) 2013-04-30 2017-08-08 Makita Corporation Stratified scavenging two-stroke engine

Also Published As

Publication number Publication date
JPS6259210B2 (en) 1987-12-10

Similar Documents

Publication Publication Date Title
JPS555411A (en) Vortex chamber type diesel engine
JPS55148936A (en) Exhaust gas recycling device of number of cylinder controlled engine
JPS5569725A (en) Exhaust gas by-passing valve mechanism for use with exhaust turbo-supercharger
JPS5783631A (en) Internal combustion engine
JPS5510013A (en) Division-operation controlled multi-cylinder internal combustion engine
US2302442A (en) Internal combustion engine
US4108119A (en) Bottom cycle manifold for four-stroke internal combustion engines
JPS5644404A (en) Device for improving combustion of mixture in four-cycle internal combustion engine
JPS5664129A (en) Number of cylinder-controlled engine
JPS5618021A (en) Port scavenging 2-cycle engine
JPS5510021A (en) 2-cycle gasoline engine
JPS5523315A (en) Two-cycle internal combustion engine
JPS57151020A (en) Supply air control device of 2-cycle diesel engine
JPS5756621A (en) Internal combustion engine
JPS5688953A (en) Intake apparatus of internal combustion engine
JPS54114637A (en) Intake device of internal combustion engine
JPS5791317A (en) Two-cycle internal combustion engine
JPS5447928A (en) Air intake system for internal combustion engine
JPS5741425A (en) Controller of engine with supercharger
JPS5765808A (en) Intake and exhaust arrangement of internal combustion engine
JPS54145814A (en) Two-cycle engine
JPS5519946A (en) Intake system for multi-cylinder internal combustion engine
JPS5464224A (en) Intake passage of internal combustion engine
JPS56146015A (en) Suction device of internal combustion engine
JPS5713228A (en) Intake system of multi cylinder engine