FR2404104A1 - CAMSHAFT, IN PARTICULAR, CAMSHAFT MADE OF CAST IRON FOR INTERNAL COMBUSTION ENGINES WITH ALTERNATIVE PISTONS - Google Patents

CAMSHAFT, IN PARTICULAR, CAMSHAFT MADE OF CAST IRON FOR INTERNAL COMBUSTION ENGINES WITH ALTERNATIVE PISTONS

Info

Publication number
FR2404104A1
FR2404104A1 FR7827046A FR7827046A FR2404104A1 FR 2404104 A1 FR2404104 A1 FR 2404104A1 FR 7827046 A FR7827046 A FR 7827046A FR 7827046 A FR7827046 A FR 7827046A FR 2404104 A1 FR2404104 A1 FR 2404104A1
Authority
FR
France
Prior art keywords
camshaft
internal combustion
cast iron
combustion engines
hardened
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
FR7827046A
Other languages
French (fr)
Other versions
FR2404104B1 (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.)
Audi AG
Original Assignee
Audi NSU Auto Union AG
Audi AG
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 Audi NSU Auto Union AG, Audi AG filed Critical Audi NSU Auto Union AG
Publication of FR2404104A1 publication Critical patent/FR2404104A1/en
Application granted granted Critical
Publication of FR2404104B1 publication Critical patent/FR2404104B1/fr
Granted 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
    • F16H—GEARING
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F16H53/025—Single-track cams for single-revolution cycles; Camshafts with such cams characterised by their construction, e.g. assembling or manufacturing features
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Gears, Cams (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Cette invention a pour but d'améliorer un arbre à cames fabriqué en fonte de fer pour des moteurs à combustion interne à pistons alternatifs, arbre dont les portées des cames sont durcies. A cet effet, les zones bordantes des cames 2 ne sont pas durcies, et lorsque les portées de ces cames sont durcies par surfusion, les bandes de fusion 3 ne sont formées que dans la région moyenne des cames sur les 2/3 environ de leur largeur.The object of this invention is to improve a camshaft made of cast iron for internal combustion engines with reciprocating pistons, the shaft of which the cam surfaces are hardened. For this purpose, the bordering zones of the cams 2 are not hardened, and when the surfaces of these cams are hardened by supercooling, the fusion bands 3 are formed only in the middle region of the cams over approximately 2/3 of their width.

FR7827046A 1977-09-22 1978-09-21 CAMSHAFT, IN PARTICULAR, CAMSHAFT MADE OF CAST IRON FOR INTERNAL COMBUSTION ENGINES WITH ALTERNATIVE PISTONS Granted FR2404104A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2742597A DE2742597C3 (en) 1977-09-22 1977-09-22 Camshaft for piston engines and work machines, preferably reciprocating internal combustion engines

Publications (2)

Publication Number Publication Date
FR2404104A1 true FR2404104A1 (en) 1979-04-20
FR2404104B1 FR2404104B1 (en) 1985-04-19

Family

ID=6019581

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7827046A Granted FR2404104A1 (en) 1977-09-22 1978-09-21 CAMSHAFT, IN PARTICULAR, CAMSHAFT MADE OF CAST IRON FOR INTERNAL COMBUSTION ENGINES WITH ALTERNATIVE PISTONS

Country Status (5)

Country Link
JP (1) JPS5457010A (en)
DE (1) DE2742597C3 (en)
FR (1) FR2404104A1 (en)
GB (1) GB2004613B (en)
IT (1) IT1099150B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532328A1 (en) * 1982-08-26 1984-03-02 Aeg Elotherm Gmbh APPARATUS FOR COOLING THE CAMPER TRIMS DURING CURING BY THE REFLOWING TECHNIQUE

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060257B1 (en) * 1980-09-11 1985-10-02 Sciaky Bros., Inc. Method for surface hardening cams
JPS5850354A (en) * 1981-09-07 1983-03-24 Toyota Motor Corp Cam shaft made of spherical graphite cast iron
JPS58196362A (en) * 1982-05-10 1983-11-15 Toyota Motor Corp Cast iron cam shaft and manufacture
JPS5923814A (en) * 1982-07-28 1984-02-07 Toyota Motor Corp Method for fining partial metallic carbide of metallic member
JPS5923156A (en) * 1982-07-28 1984-02-06 Toyota Motor Corp Cast-iron cam shaft and manufacture thereof
DD211983A1 (en) * 1982-12-09 1984-08-01 Zentralinstitut Schweiss METHOD OF MELTING, IN PARTICULAR MOTOR PISTON, BY ELECTRON BEAM
JPS60187660A (en) * 1984-02-24 1985-09-25 Honda Motor Co Ltd Partially hardened cast iron member
GB2155498B (en) * 1984-03-07 1988-11-02 Honda Motor Co Ltd Method and apparatus for remelting and hardening an elongate workpiece
JPS619517A (en) * 1984-06-22 1986-01-17 Mitsubishi Electric Corp Surface reforming apparatus of mechanical parts for rotator
DE3444901A1 (en) * 1984-12-08 1986-06-12 Audi AG, 8070 Ingolstadt Cam control
JPS61246320A (en) * 1985-03-01 1986-11-01 Toyota Motor Corp Manufacture of remelted and chilled camshaft
JPS6213521A (en) * 1985-07-09 1987-01-22 Honda Motor Co Ltd Wear resistant member and its production
DE4224264C1 (en) * 1992-07-23 1993-06-09 Aeg-Elotherm Gmbh, 5630 Remscheid, De Remelting of workpiece surface - by reducing carbon@ content in parts where remelting will not occur and directing an arc, electron, plasma or laser beam onto the surface
DE102010038679A1 (en) 2010-07-30 2012-02-02 Robert Bosch Gmbh Cam shaft for high pressure pump of common-rail fuel injection system of internal combustion engine, has cam comprising sliding friction coefficient, which is larger than detention friction coefficient of roller opposite to roller shoe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082461B (en) * 1957-12-12 1960-05-25 Maybach Motorenbau Gmbh Shaft, especially camshaft

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4527442Y1 (en) * 1969-08-08 1970-10-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082461B (en) * 1957-12-12 1960-05-25 Maybach Motorenbau Gmbh Shaft, especially camshaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532328A1 (en) * 1982-08-26 1984-03-02 Aeg Elotherm Gmbh APPARATUS FOR COOLING THE CAMPER TRIMS DURING CURING BY THE REFLOWING TECHNIQUE

Also Published As

Publication number Publication date
DE2742597C3 (en) 1980-02-07
DE2742597A1 (en) 1979-03-29
JPS5740323B2 (en) 1982-08-26
GB2004613B (en) 1982-02-24
IT7827944A0 (en) 1978-09-21
GB2004613A (en) 1979-04-04
FR2404104B1 (en) 1985-04-19
IT1099150B (en) 1985-09-18
JPS5457010A (en) 1979-05-08
DE2742597B2 (en) 1979-05-31

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Legal Events

Date Code Title Description
ST Notification of lapse