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JPS57200650A - Piston for internal-combustion engine - Google Patents

Piston for internal-combustion engine

Info

Publication number
JPS57200650A
JPS57200650A JP8375081A JP8375081A JPS57200650A JP S57200650 A JPS57200650 A JP S57200650A JP 8375081 A JP8375081 A JP 8375081A JP 8375081 A JP8375081 A JP 8375081A JP S57200650 A JPS57200650 A JP S57200650A
Authority
JP
Japan
Prior art keywords
groove
compression ring
bottom wall
chamber side
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
JP8375081A
Other languages
Japanese (ja)
Inventor
Tadashi Nagai
Takeshi Nakamura
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP8375081A priority Critical patent/JPS57200650A/en
Publication of JPS57200650A publication Critical patent/JPS57200650A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To reduce blow-by gas by a method wherein the inner periphral wall of a compression ring andthe bottom wall of a groove for the compression ring are formed so as to have a plurality of steps to reduce substantially the spatial volume into which unburnt gas is forced from the side of a combustion chamber. CONSTITUTION:The bottom wall of the groove 15 for the first compression ring is constituted so as to have two steps through a shoulder 20 while the bottom wall 21A at the combustion chamber side is formed so as to have a groove configuration deeper than the bottom wall 21B of a crank chamber side in the radial direction thereof. On the other hand, the inner peripheral wall of the first compression ring 18 fitting into the groove 15 for the first compression ring is also formed so as to have two steps through the shoulder 22 in corresponding to the groove 15, and an extended section 18A is made by extending the part of the combustion chamber side of the first compression ring into the deep groove toward the bottom wall 21A of the combustion chamber side of the groove for the first compression ring so as to have a flange shape. By this extension 18A, the spatial volume between the inner peripheral wall of the first compression ring 18 and the bottom wall of the groove 15 therefor is divided into ta combustion chamber side spade V1 and a crank chamber side space V2.
JP8375081A 1981-06-02 1981-06-02 Piston for internal-combustion engine Pending JPS57200650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8375081A JPS57200650A (en) 1981-06-02 1981-06-02 Piston for internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8375081A JPS57200650A (en) 1981-06-02 1981-06-02 Piston for internal-combustion engine

Publications (1)

Publication Number Publication Date
JPS57200650A true JPS57200650A (en) 1982-12-08

Family

ID=13811203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8375081A Pending JPS57200650A (en) 1981-06-02 1981-06-02 Piston for internal-combustion engine

Country Status (1)

Country Link
JP (1) JPS57200650A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442449C1 (en) * 1984-01-31 1985-11-21 Gebrüder Sulzer AG, Winterthur Arrangement for sealing a piston in a cylinder
US5392692A (en) * 1994-03-14 1995-02-28 Ford Motor Company Antiblow-by piston and seal construction for high temperature applications
DE102004021662A1 (en) * 2004-05-03 2005-12-01 Man B & W Diesel Ag Piston with piston ring grooves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442449C1 (en) * 1984-01-31 1985-11-21 Gebrüder Sulzer AG, Winterthur Arrangement for sealing a piston in a cylinder
US5392692A (en) * 1994-03-14 1995-02-28 Ford Motor Company Antiblow-by piston and seal construction for high temperature applications
EP0672850A1 (en) * 1994-03-14 1995-09-20 Ford Motor Company Limited A piston and ring assembly
DE102004021662A1 (en) * 2004-05-03 2005-12-01 Man B & W Diesel Ag Piston with piston ring grooves

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