FR2360759A1 - LIGHT ALLOY PISTON - Google Patents

LIGHT ALLOY PISTON

Info

Publication number
FR2360759A1
FR2360759A1 FR7724274A FR7724274A FR2360759A1 FR 2360759 A1 FR2360759 A1 FR 2360759A1 FR 7724274 A FR7724274 A FR 7724274A FR 7724274 A FR7724274 A FR 7724274A FR 2360759 A1 FR2360759 A1 FR 2360759A1
Authority
FR
France
Prior art keywords
skirt
piston
light alloy
frame
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.)
Withdrawn
Application number
FR7724274A
Other languages
French (fr)
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10346699&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2360759(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wellworthy Ltd filed Critical Wellworthy Ltd
Publication of FR2360759A1 publication Critical patent/FR2360759A1/en
Withdrawn legal-status Critical Current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
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/001—One-piece pistons
    • 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 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • F02F3/04—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts
    • F02F3/08—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts the inserts being ring-shaped
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Le piston à fond 1 et jupe 2 est muni d'une pièce encastrée 6, ou armature, dont le métal constitutif a un coefficient de dilatation thermique inférieur à celui de la jupe, et qui s'étend au-dessous de la gorge inférieure 5 en partie vers le bas de la jupe, la partie 8 de paroi de celle-ci, située à l'intérieur de l'armature, se terminant au-dessus du bord inférieur de celle-ci. Ce dispositif limite la dilatation thermique des surfaces de portée des efforts exercés sur la jupe en fonctionnement du piston dans un moteur à combustion interne.The piston with bottom 1 and skirt 2 is provided with a recessed part 6, or frame, the constituent metal of which has a thermal expansion coefficient lower than that of the skirt, and which extends below the lower groove 5 partly towards the bottom of the skirt, the wall part 8 thereof, located inside the frame, ending above the lower edge thereof. This device limits the thermal expansion of the bearing surfaces of the forces exerted on the skirt during operation of the piston in an internal combustion engine.

FR7724274A 1976-08-06 1977-08-05 LIGHT ALLOY PISTON Withdrawn FR2360759A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3296876A GB1527418A (en) 1976-08-06 1976-08-06 Pistons

Publications (1)

Publication Number Publication Date
FR2360759A1 true FR2360759A1 (en) 1978-03-03

Family

ID=10346699

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724274A Withdrawn FR2360759A1 (en) 1976-08-06 1977-08-05 LIGHT ALLOY PISTON

Country Status (5)

Country Link
JP (1) JPS5321317A (en)
DE (1) DE2734519A1 (en)
FR (1) FR2360759A1 (en)
GB (1) GB1527418A (en)
IT (1) IT1082876B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2841980A1 (en) * 1978-09-27 1980-04-17 Schmidt Gmbh Karl LIGHT PISTON FOR INTERNAL COMBUSTION ENGINES
JPS59229033A (en) * 1983-06-09 1984-12-22 Toyota Motor Corp Piston for internal-combustion engine
JPS59229034A (en) * 1983-06-09 1984-12-22 Toyota Motor Corp Piston for internal-combustion engine
JPH0415970Y2 (en) * 1984-09-13 1992-04-09
JPS628348U (en) * 1985-06-28 1987-01-19
JPS62156148U (en) * 1986-03-26 1987-10-03
DE102021207405A1 (en) 2021-07-13 2023-01-19 Federal-Mogul Nürnberg GmbH Steel pistons for an internal combustion engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020990A1 (en) * 1968-10-18 1970-07-17 Mahle Kg
FR2359334A1 (en) * 1976-07-24 1978-02-17 Hepworth & Grandage Ltd Light metal piston for engine or compressor - has expansion control inserts with lower coefficient of expansion than main body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020990A1 (en) * 1968-10-18 1970-07-17 Mahle Kg
FR2359334A1 (en) * 1976-07-24 1978-02-17 Hepworth & Grandage Ltd Light metal piston for engine or compressor - has expansion control inserts with lower coefficient of expansion than main body

Also Published As

Publication number Publication date
DE2734519A1 (en) 1978-02-09
GB1527418A (en) 1978-10-04
IT1082876B (en) 1985-05-21
JPS5321317A (en) 1978-02-27

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Legal Events

Date Code Title Description
ST Notification of lapse