JPS5779220A - Two cycle engine - Google Patents

Two cycle engine

Info

Publication number
JPS5779220A
JPS5779220A JP15550180A JP15550180A JPS5779220A JP S5779220 A JPS5779220 A JP S5779220A JP 15550180 A JP15550180 A JP 15550180A JP 15550180 A JP15550180 A JP 15550180A JP S5779220 A JPS5779220 A JP S5779220A
Authority
JP
Japan
Prior art keywords
cylinder bore
lead valve
engine
intake
intake path
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
JP15550180A
Other languages
Japanese (ja)
Inventor
Toshimitsu Iio
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 JP15550180A priority Critical patent/JPS5779220A/en
Publication of JPS5779220A publication Critical patent/JPS5779220A/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
    • 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
    • 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)
  • Supercharger (AREA)

Abstract

PURPOSE: To improve the output of an engine by providing a lead valve adjacent to a cylinder bore in an intake path of the engine and making the cylinder bore side of the lead valve conform to the cylinder bore.
CONSTITUTION: A lead valve 1 is provided adjacent to a cylinder bore 8. The cylinder bore 8 side of the lead valve 1 is made polygonal along the cylinder bore. Since a dead space in an intake path becomes small, compression effect of intake in a crank chamber when a piston is descended can be increased. Thus, the output of an engine can be improved. Further, a carbureter can be installed closer to the cylinder by the displacement of the lead valve toward the cylinder bore to reduce resistance of the intake path so that the response of the intake system can be improved.
COPYRIGHT: (C)1982,JPO&Japio
JP15550180A 1980-11-05 1980-11-05 Two cycle engine Pending JPS5779220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15550180A JPS5779220A (en) 1980-11-05 1980-11-05 Two cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15550180A JPS5779220A (en) 1980-11-05 1980-11-05 Two cycle engine

Publications (1)

Publication Number Publication Date
JPS5779220A true JPS5779220A (en) 1982-05-18

Family

ID=15607420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15550180A Pending JPS5779220A (en) 1980-11-05 1980-11-05 Two cycle engine

Country Status (1)

Country Link
JP (1) JPS5779220A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196323A (en) * 1982-05-13 1983-11-15 Asahi Glass Co Ltd Shaft coupling
JPS60212620A (en) * 1984-04-05 1985-10-24 Yamaha Motor Co Ltd Reed valve structure of engine for motorcycle
US4643139A (en) * 1983-07-20 1987-02-17 Hargreaves Bernard J Reed valves for internal combustion engines

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443203U (en) * 1977-08-31 1979-03-24
US4228770A (en) * 1979-05-29 1980-10-21 Performance Industries, Inc. Internal combustion engine fuel supply system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443203U (en) * 1977-08-31 1979-03-24
US4228770A (en) * 1979-05-29 1980-10-21 Performance Industries, Inc. Internal combustion engine fuel supply system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196323A (en) * 1982-05-13 1983-11-15 Asahi Glass Co Ltd Shaft coupling
US4643139A (en) * 1983-07-20 1987-02-17 Hargreaves Bernard J Reed valves for internal combustion engines
JPS60212620A (en) * 1984-04-05 1985-10-24 Yamaha Motor Co Ltd Reed valve structure of engine for motorcycle
JPH0574694B2 (en) * 1984-04-05 1993-10-19 Yamaha Motor Co Ltd

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