FR2248907A1 - Light metal piston mfr. for internal combustion engines - made in sections for easy coating of grooves - Google Patents

Light metal piston mfr. for internal combustion engines - made in sections for easy coating of grooves

Info

Publication number
FR2248907A1
FR2248907A1 FR7337935A FR7337935A FR2248907A1 FR 2248907 A1 FR2248907 A1 FR 2248907A1 FR 7337935 A FR7337935 A FR 7337935A FR 7337935 A FR7337935 A FR 7337935A FR 2248907 A1 FR2248907 A1 FR 2248907A1
Authority
FR
France
Prior art keywords
piston
grooves
parts
mfr
sections
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.)
Granted
Application number
FR7337935A
Other languages
French (fr)
Other versions
FR2248907B1 (en
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 FR7337935A priority Critical patent/FR2248907A1/en
Publication of FR2248907A1 publication Critical patent/FR2248907A1/en
Application granted granted Critical
Publication of FR2248907B1 publication Critical patent/FR2248907B1/fr
Granted 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
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass 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 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • F02F2003/0061—Multi-part pistons the parts being connected by casting, brazing, welding or clamping by welding
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts

Landscapes

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

Abstract

The piston contains >=1 groove for housing a piston-ring and the novelty is that the piston is made in two parts each part contg one complete side of a groove, at least one side of the groove is coated with a wear-resistant material and the two parts are then joined to formt he piston. The piston may contain a grooves and be assembled from (n + 1) parts. Several configurations are possibly w.r.t. the joint-line between the two parts, which may be joined mechanically or by welding, and the wear-resistant coating is pref. applied by spraying or electroplating. The top part of the piston can be made of material with higher heat-resistance than the other parts. The grooves are very easy to coat whereas this operation is very difficult when the piston is made in one piece.
FR7337935A 1973-10-24 1973-10-24 Light metal piston mfr. for internal combustion engines - made in sections for easy coating of grooves Granted FR2248907A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7337935A FR2248907A1 (en) 1973-10-24 1973-10-24 Light metal piston mfr. for internal combustion engines - made in sections for easy coating of grooves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7337935A FR2248907A1 (en) 1973-10-24 1973-10-24 Light metal piston mfr. for internal combustion engines - made in sections for easy coating of grooves

Publications (2)

Publication Number Publication Date
FR2248907A1 true FR2248907A1 (en) 1975-05-23
FR2248907B1 FR2248907B1 (en) 1976-10-01

Family

ID=9126872

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7337935A Granted FR2248907A1 (en) 1973-10-24 1973-10-24 Light metal piston mfr. for internal combustion engines - made in sections for easy coating of grooves

Country Status (1)

Country Link
FR (1) FR2248907A1 (en)

Also Published As

Publication number Publication date
FR2248907B1 (en) 1976-10-01

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Legal Events

Date Code Title Description
ST Notification of lapse