JPS5768516A - Two cycle engine - Google Patents

Two cycle engine

Info

Publication number
JPS5768516A
JPS5768516A JP55143289A JP14328980A JPS5768516A JP S5768516 A JPS5768516 A JP S5768516A JP 55143289 A JP55143289 A JP 55143289A JP 14328980 A JP14328980 A JP 14328980A JP S5768516 A JPS5768516 A JP S5768516A
Authority
JP
Japan
Prior art keywords
exhaust
valve
port
engine
piston
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.)
Pending
Application number
JP55143289A
Other languages
Japanese (ja)
Inventor
Masahiro Yamamoto
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 JP55143289A priority Critical patent/JPS5768516A/en
Publication of JPS5768516A publication Critical patent/JPS5768516A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/028—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation for two-stroke engines
    • F02D13/0284—Variable control of exhaust valves only
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Exhaust Silencers (AREA)

Abstract

PURPOSE:To effectively remove carbon from the outer periphery of an exhaust valve in an engine a rotatable exhaust valve is provided in a recess formed on the inner surface of an exhaust passage to vary the exhaust timing by the telescopic movements of the valve to an exhaust port by forming a carbon combustion catalyst on the outer periphery of the valve. CONSTITUTION:An exhaust valve 13 is rotatably displaced in response to the rotating speed of an engine, is rotated so that an extension 26 advances into an exhaust gas passage 9, as whown, for example, by broken lines at a low speed rotating time, and the upper edge of the hole of an exhaust port 10 is closed. In this state, the exhaust port 10 is closed earlier upon rising of the piston 2, while the port is opened later upon falling of the piston 2, thereby tending to delay the exhaust timing. In such a structure, a mounting groove 28 is formed on the predetermined outer peripheral surface of the extension 26 of the valve 13 to contain a holder 29 made of ceramic or the like in the groove 28. A catalyst 30 made, for example, of platinum series powder is attached to the outer peripheral surface of the holder 29.
JP55143289A 1980-10-14 1980-10-14 Two cycle engine Pending JPS5768516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55143289A JPS5768516A (en) 1980-10-14 1980-10-14 Two cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55143289A JPS5768516A (en) 1980-10-14 1980-10-14 Two cycle engine

Publications (1)

Publication Number Publication Date
JPS5768516A true JPS5768516A (en) 1982-04-26

Family

ID=15335259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55143289A Pending JPS5768516A (en) 1980-10-14 1980-10-14 Two cycle engine

Country Status (1)

Country Link
JP (1) JPS5768516A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712750A1 (en) * 1987-04-15 1988-11-10 Bayerische Motoren Werke Ag Two-stroke internal combustion engine, especially of reciprocating piston type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712750A1 (en) * 1987-04-15 1988-11-10 Bayerische Motoren Werke Ag Two-stroke internal combustion engine, especially of reciprocating piston type

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