JPS56138443A - Two-cycle engine - Google Patents

Two-cycle engine

Info

Publication number
JPS56138443A
JPS56138443A JP4085580A JP4085580A JPS56138443A JP S56138443 A JPS56138443 A JP S56138443A JP 4085580 A JP4085580 A JP 4085580A JP 4085580 A JP4085580 A JP 4085580A JP S56138443 A JPS56138443 A JP S56138443A
Authority
JP
Japan
Prior art keywords
passage
oblique
oblique direction
opening part
side part
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
JP4085580A
Other languages
Japanese (ja)
Other versions
JPH0116981B2 (en
Inventor
Teruo Abe
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 JP4085580A priority Critical patent/JPS56138443A/en
Publication of JPS56138443A publication Critical patent/JPS56138443A/en
Publication of JPH0116981B2 publication Critical patent/JPH0116981B2/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
    • 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
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting

Landscapes

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

Abstract

PURPOSE:To cast a smooth passage wall face with a shell core, by opening a rectangular opening part to a cylinder inner face, to which downward or upward oblique intake and exhaust passages are connected, and forming one side part in the oblique side of the passage into V-shape toward the oblique direction. CONSTITUTION:To an opening part a1 almost rectangularly opened to the core of a cylinder A in a two-cycle engine, a downward or upward oblique intake-exhaust passage a2 can be connected. If one side part in the oblique direction of a passage in the opening part a1 is formed into almost a V-shape toward its oblique direction, connection points of said side part and the passage are aligned on a straight line along the oblique direction of the passage to equally set a slope from each connection point and form a wall face of the passage to a smoothly successive shape, thus molding work used with a shell core can be performed.
JP4085580A 1980-03-28 1980-03-28 Two-cycle engine Granted JPS56138443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4085580A JPS56138443A (en) 1980-03-28 1980-03-28 Two-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4085580A JPS56138443A (en) 1980-03-28 1980-03-28 Two-cycle engine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP6352188A Division JPH0236781B2 (en) 1988-03-18 1988-03-18 2SAIKURUENJIN

Publications (2)

Publication Number Publication Date
JPS56138443A true JPS56138443A (en) 1981-10-29
JPH0116981B2 JPH0116981B2 (en) 1989-03-28

Family

ID=12592165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4085580A Granted JPS56138443A (en) 1980-03-28 1980-03-28 Two-cycle engine

Country Status (1)

Country Link
JP (1) JPS56138443A (en)

Also Published As

Publication number Publication date
JPH0116981B2 (en) 1989-03-28

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