GB1439328A - Pistons and piston rings - Google Patents

Pistons and piston rings

Info

Publication number
GB1439328A
GB1439328A GB3528572A GB3528572A GB1439328A GB 1439328 A GB1439328 A GB 1439328A GB 3528572 A GB3528572 A GB 3528572A GB 3528572 A GB3528572 A GB 3528572A GB 1439328 A GB1439328 A GB 1439328A
Authority
GB
United Kingdom
Prior art keywords
ring
cylinder
pistons
crown
thermal expansion
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.)
Expired
Application number
GB3528572A
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.)
Wellworthy Ltd
Original Assignee
Wellworthy 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 Wellworthy Ltd filed Critical Wellworthy Ltd
Priority to GB3528572A priority Critical patent/GB1439328A/en
Priority to IT5142273A priority patent/IT994098B/en
Priority to JP8325173A priority patent/JPS49132408A/ja
Priority to FR7327171A priority patent/FR2195310A5/fr
Priority to DE19732338045 priority patent/DE2338045A1/en
Publication of GB1439328A publication Critical patent/GB1439328A/en
Expired 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
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part pistons
    • F02F3/0023—Multi-part pistons the parts being bolted or screwed together
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity

Abstract

1439328 Pistons; cylinders WELLWORTHY Ltd 25 Oct 1973 [28 July 1972] 35285/72 Heading F2T A piston comprises a body 10 and a crown 16 detachably connected together and defining a groove 25 in which is housed a continuous, i.e. unsplit, piston ring 24 capable of operating at a temperature of 900‹ to 1000‹ C. and has a coefficient of thermal expansion substantially less than, preferably one quarter to one fifth, that of the material of the co-operating cylinder, e.g. cast iron. The ring 24 is of a ceramic material, e.g. tungsten carbide, silicon carbide or, preferably, silicon nitride. The body 10 is of aluminium alloy and the crown 16, which may be of nickel-chromium alloy, is secured thereto by a steel ring 20 and nut 21. The coefficients of thermal expansion of the ring 24 and cylinder are so selected as to maintain a close running clearance in the cylinder under all engine operating conditions.
GB3528572A 1972-07-28 1972-07-28 Pistons and piston rings Expired GB1439328A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3528572A GB1439328A (en) 1972-07-28 1972-07-28 Pistons and piston rings
IT5142273A IT994098B (en) 1972-07-28 1973-07-12 IMPROVEMENT IN THE PISTONS AND ELASTIC RINGS IN PARTICULAR FOR INTERNAL COMBUSTION ENGINES
JP8325173A JPS49132408A (en) 1972-07-28 1973-07-25
FR7327171A FR2195310A5 (en) 1972-07-28 1973-07-25
DE19732338045 DE2338045A1 (en) 1972-07-28 1973-07-26 PISTON AND PISTON RING ASSEMBLY, E.G. FOR COMBUSTION ENGINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3528572A GB1439328A (en) 1972-07-28 1972-07-28 Pistons and piston rings

Publications (1)

Publication Number Publication Date
GB1439328A true GB1439328A (en) 1976-06-16

Family

ID=10375993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3528572A Expired GB1439328A (en) 1972-07-28 1972-07-28 Pistons and piston rings

Country Status (5)

Country Link
JP (1) JPS49132408A (en)
DE (1) DE2338045A1 (en)
FR (1) FR2195310A5 (en)
GB (1) GB1439328A (en)
IT (1) IT994098B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522564U (en) * 1978-08-02 1980-02-13
US4495684A (en) * 1982-08-14 1985-01-29 Karl Schmidt Gmbh Process of joining a ceramic insert which is adapted to be embedded in a light metal casting for use in internal combustion engines
US4709621A (en) * 1984-03-13 1987-12-01 Ngk Insulators, Ltd. Internal combustion engine piston and a method of producing the same
US4751871A (en) * 1985-04-04 1988-06-21 Ficht Gmbh Multisectional piston with plural ceramic parts and rigidly connected piston rod for use in horizontally opposed piston internal combustion engine
WO2001007758A1 (en) * 1999-07-23 2001-02-01 Deckard Carl R Apparatus and method for sealing internal combustion engines
US7302927B1 (en) 2005-12-17 2007-12-04 Mahle International Gmbh Two-part piston for an internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911138U (en) * 1982-07-15 1984-01-24 株式会社新潟鐵工所 internal combustion engine piston
FR2702024B1 (en) * 1993-02-26 1995-05-24 Racing Organisation Course Sar Piston with closed segment, segment, machine comprising such a piston and method for manufacturing a piston.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522564U (en) * 1978-08-02 1980-02-13
JPS583959Y2 (en) * 1978-08-02 1983-01-24 株式会社日立製作所 piston
US4495684A (en) * 1982-08-14 1985-01-29 Karl Schmidt Gmbh Process of joining a ceramic insert which is adapted to be embedded in a light metal casting for use in internal combustion engines
US4709621A (en) * 1984-03-13 1987-12-01 Ngk Insulators, Ltd. Internal combustion engine piston and a method of producing the same
US4751871A (en) * 1985-04-04 1988-06-21 Ficht Gmbh Multisectional piston with plural ceramic parts and rigidly connected piston rod for use in horizontally opposed piston internal combustion engine
WO2001007758A1 (en) * 1999-07-23 2001-02-01 Deckard Carl R Apparatus and method for sealing internal combustion engines
US7302927B1 (en) 2005-12-17 2007-12-04 Mahle International Gmbh Two-part piston for an internal combustion engine

Also Published As

Publication number Publication date
JPS49132408A (en) 1974-12-19
DE2338045A1 (en) 1974-02-14
IT994098B (en) 1975-10-20
FR2195310A5 (en) 1974-03-01

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed