JPS54123607A - Two-cycle engine - Google Patents

Two-cycle engine

Info

Publication number
JPS54123607A
JPS54123607A JP3026178A JP3026178A JPS54123607A JP S54123607 A JPS54123607 A JP S54123607A JP 3026178 A JP3026178 A JP 3026178A JP 3026178 A JP3026178 A JP 3026178A JP S54123607 A JPS54123607 A JP S54123607A
Authority
JP
Japan
Prior art keywords
pistons
central portion
ratio
top surface
combustion chamber
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
JP3026178A
Other languages
Japanese (ja)
Inventor
Masashi Kida
Shunzo Yamaguchi
Takeshi Tanaka
Masayuki 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.)
Soken Inc
Original Assignee
Nippon Soken Inc
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 Nippon Soken Inc filed Critical Nippon Soken Inc
Priority to JP3026178A priority Critical patent/JPS54123607A/en
Publication of JPS54123607A publication Critical patent/JPS54123607A/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
    • F02B75/02—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)

Abstract

PURPOSE: To improve thermal efficiency, by forming the axial symmetry of a combustion chamber in a ringed shape and by minimizing a S/V ratio by forming a central portion of a top surface of at least one of pistons in a projecting shape, in a uniflow system opposed piston type two-cycle engine.
CONSTITUTION: In a uniflow system opposed piston type two-cycle engine that mounts a pair of pistons 8, 9 into a cylinder 5 in opposite shapes, a central portion 12 of a top surface of said piston 8 is formed in a projecting shape while a concave portion 13 is conversely formed on a central portion of a top surface of said piston 9, and an approximate ringed combustion chamger 15 is shaped by the pistons 8, 9 and a semicircular groove 14 of the cylinder 5 when the pistons 8, 9 are located at top dead center (a condition shown in the figure) while a burnt gas chamber 16 is formed by said central portion 12 and the concave portion 13. Thus, the escape of heat can be reduced because the S/V ratio (the ratio of the wall area S to volume V of the combustion chamber 15) can be made small in the combustion chamber 15.
COPYRIGHT: (C)1979,JPO&Japio
JP3026178A 1978-03-16 1978-03-16 Two-cycle engine Pending JPS54123607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3026178A JPS54123607A (en) 1978-03-16 1978-03-16 Two-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3026178A JPS54123607A (en) 1978-03-16 1978-03-16 Two-cycle engine

Publications (1)

Publication Number Publication Date
JPS54123607A true JPS54123607A (en) 1979-09-26

Family

ID=12298751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3026178A Pending JPS54123607A (en) 1978-03-16 1978-03-16 Two-cycle engine

Country Status (1)

Country Link
JP (1) JPS54123607A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013053586A (en) * 2011-09-05 2013-03-21 Osaka Gas Co Ltd Engine
CN105804856A (en) * 2016-04-24 2016-07-27 中北大学 Opposed-piston two-stroke intra-cylinder direct injection gasoline engine combustion chamber
CN114790974A (en) * 2022-04-19 2022-07-26 中北大学 Variable displacement opposed plunger pump and variable displacement calculation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013053586A (en) * 2011-09-05 2013-03-21 Osaka Gas Co Ltd Engine
CN105804856A (en) * 2016-04-24 2016-07-27 中北大学 Opposed-piston two-stroke intra-cylinder direct injection gasoline engine combustion chamber
CN114790974A (en) * 2022-04-19 2022-07-26 中北大学 Variable displacement opposed plunger pump and variable displacement calculation method thereof

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