EP0280774B1 - Steuerwellenantrieb für eine Hubkolbenbrennkraftmaschine - Google Patents

Steuerwellenantrieb für eine Hubkolbenbrennkraftmaschine Download PDF

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Publication number
EP0280774B1
EP0280774B1 EP19870117531 EP87117531A EP0280774B1 EP 0280774 B1 EP0280774 B1 EP 0280774B1 EP 19870117531 EP19870117531 EP 19870117531 EP 87117531 A EP87117531 A EP 87117531A EP 0280774 B1 EP0280774 B1 EP 0280774B1
Authority
EP
European Patent Office
Prior art keywords
flange
crankshaft
receiving
gear
output flange
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 - Lifetime
Application number
EP19870117531
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0280774A1 (de
Inventor
Hans Scherrer
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer 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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0280774A1 publication Critical patent/EP0280774A1/de
Application granted granted Critical
Publication of EP0280774B1 publication Critical patent/EP0280774B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F01L1/026—Gear drive
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear

Definitions

  • the invention relates to a control shaft drive with the features of the preamble of claim 1.
  • the ring gear In a known control shaft drive of this type, the ring gear consists of two ring halves, which are supported with one end face on an undercut shoulder of the crankshaft and which rest with their other end face on a two-part clamping ring which also surrounds the crankshaft and is clamped together by two screws.
  • This construction has the advantage that disassembly and reassembly of the ring gear in the motor is possible, i.e. without having to remove the crankshaft.
  • Disadvantages of the known construction can be seen in the fact that because of the two-part design of the ring gear and the clamping ring, it is complex both in terms of construction and in terms of assembly and is therefore expensive.
  • Difficulties in the assembly of the ring gear also cause its two-part construction because deviations from the tooth pitch can occur at the separation point of the ring halves. Furthermore, there are problems in the production of the ring gear when it has to be hardened because the ring halves can warp.
  • the invention has for its object to improve a control shaft drive of the type mentioned so that the design effort for the ring gear and its attachment is significantly reduced and that the manufacture and assembly of the ring gear is simplified.
  • this object is achieved by the features of the characterizing part of claim 1.
  • the one-piece design of the toothed ring simplifies its manufacture and also makes it less expensive, because during hardening, because of the closed ring shape, there is less tendency to warp than with ring halves.
  • shrinking the ring gear onto the mounting flange its assembly is considerably simplified. This simplification is supported by the somewhat larger dimensioning of the diameter of the mounting flange compared to the diameter of the output flange.
  • a control shaft drive is known from DE-OS 2 228 635, in which a separate output flange is fastened on an elongated section of the crankshaft bearing journal with a diameter.
  • a flywheel is attached to this flange, whereas the one-piece gearwheel for driving the control shaft is arranged on the extended section between the bearing journal and the output flange. If the gearwheel is to be removed in this control shaft drive, the output flange must first be removed from the extended section because the outer diameter of the flange is larger than the inner diameter of the gearwheel.
  • crankshaft has at one end an integral output flange and a shaft section located between this flange and the crankshaft bearing journal is surrounded by a two-part sleeve-like molded part.
  • This molded part is provided at its end adjacent to the output flange with a flange which is attached to the output flange together with a flywheel.
  • the other end of the two-part shaped piece is designed as a ring gear for driving the control shaft.
  • the outside diameter of the ring gear is smaller than that of the output flange.
  • a crankshaft 2 is mounted in a housing 1 of a reciprocating piston internal combustion engine, which works according to the four-stroke diesel method, of which a main bearing journal 3, a crank journal 4, a flange 5 serving to receive a ring gear 6 and a driven flange 7 forming the crankshaft end are shown are.
  • the ring gear 6 serving to drive a control shaft 8 is in engagement with an intermediate gear 9, which is rotatably mounted on a pin 11 together with a further intermediate gear 10.
  • the intermediate gears 9 and 10 are rotatably connected to each other, and the bearing pin 11 is fixed to the housing 1. With the intermediate gear 10, which has a smaller diameter than the intermediate gear 9, a gear 12 is engaged, which is fixed on the control shaft 8.
  • the gear transmission consisting of the parts 6, 9, 10 and 12 is shielded from the outside by a cover plate 13 fastened to the housing 1.
  • the receiving flange 5 has an outer diameter D F , which is slightly larger than the outer diameter D A of the output flange 7.
  • the output flange 7 as well as the receiving flange 5 are made in one piece with the crankshaft 2.
  • the somewhat larger diameter D F makes it possible to move this thermally widened ring gear over the driven flange 7 to the receiving flange 5, which is provided with a collar 5 ′ to limit this movement, when the ring gear 6 to be shrunk onto the flange 5.
  • the widened ring gear 6 lies against this collar 5 ', it is fastened to the flange 5 by cooling, it being irrelevant which relative angular position the ring gear assumes to the crankshaft.
  • the intermediate gears 9 and 10 are interconnected by thermal shrinking.
  • the gear wheel 12 fastened on the control shaft 8, on the other hand, is shrunk on hydraulically, for which purpose an axial blind bore 14 and radial bores 15 branching therefrom are provided.
  • the exact angular position between the crankshaft 2 and the control shaft 8 is achieved in that hydraulic pressure medium is supplied via the bores 14 and 15 under a pressure of, for example, 1000 bar, under which Influence the gear 12 is expanded somewhat.
  • the control shaft 8 can then be rotated relative to the gear 12 and thus to the crankshaft 2 until the desired angular position is reached. Then the pressure medium is discharged from the bores 14 and 15, so that the gear 12 is stuck on the control shaft 8.
  • the ring gear 6 on the receiving flange 5 If the ring gear 6 on the receiving flange 5 has to be replaced, it is cut open by means of cut-off grinding and pulled off the flange 5. Then a new ring gear 6 is thermally shrunk onto the flange 5.
  • the ring gear 6 could also be connected to the receiving flange 5 by a hydraulic pressure bandage, as is provided for the gear wheel 12 and the control shaft 8.
  • the cylindrical section 3 ′ of the crankshaft 2 located between the receiving flange 5 and the driven flange 7 is normally surrounded by a shaft seal arrangement, not shown here, which is detachably fastened to the cover plate 13.
  • the first crankshaft bearing (journal 3) is provided behind the receiving flange 5, as seen from the output flange 7.
  • this bearing arrangement is sufficient for the smooth running of the ring gear 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Gears, Cams (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP19870117531 1987-02-26 1987-11-27 Steuerwellenantrieb für eine Hubkolbenbrennkraftmaschine Expired - Lifetime EP0280774B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH735/87 1987-02-26
CH73587A CH673681A5 (no) 1987-02-26 1987-02-26

Publications (2)

Publication Number Publication Date
EP0280774A1 EP0280774A1 (de) 1988-09-07
EP0280774B1 true EP0280774B1 (de) 1990-11-22

Family

ID=4193975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870117531 Expired - Lifetime EP0280774B1 (de) 1987-02-26 1987-11-27 Steuerwellenantrieb für eine Hubkolbenbrennkraftmaschine

Country Status (9)

Country Link
EP (1) EP0280774B1 (no)
JP (1) JP2798211B2 (no)
CH (1) CH673681A5 (no)
DE (1) DE3766360D1 (no)
DK (1) DK8588A (no)
ES (1) ES2019923B3 (no)
FI (1) FI89976C (no)
NO (1) NO880836L (no)
PL (1) PL158264B1 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI92855C (fi) * 1993-02-16 1995-01-10 Waertsilae Diesel Int Ison dieselmoottorin nokka-akselin säädettävä voimansiirtojärjestely
GB2346670B (en) * 1999-02-11 2003-07-16 United Eng Forgings Ltd Crankshaft construction
CN102121520A (zh) * 2010-12-27 2011-07-13 中国北车集团大连机车车辆有限公司 齿轮传动装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB104493A (en) * 1917-01-02 1917-03-08 Rolls Royce Improvements in or relating to Camshaft Driving Gear of Internal Combustion Engines
GB279627A (en) * 1926-10-21 1927-11-03 Rover Co Ltd Improvements in or relating to means for driving the camshafts of internal combustion engines
DE2228635A1 (de) * 1972-06-13 1974-01-03 Kloeckner Humboldt Deutz Ag Hubkolbenmaschine mit einer kurbelwelle
JPS5377213U (no) * 1976-11-29 1978-06-27
JPS6059818U (ja) * 1983-09-30 1985-04-25 日産ディーゼル工業株式会社 クランクシヤフト
JPS60139968A (ja) * 1983-12-28 1985-07-24 Nippon Piston Ring Co Ltd 組立カムシヤフトの製造方法
JPS6283556A (ja) * 1985-10-09 1987-04-17 Honda Motor Co Ltd ギヤトレ−ンのダンパ装置

Also Published As

Publication number Publication date
JP2798211B2 (ja) 1998-09-17
DK8588D0 (da) 1988-01-08
EP0280774A1 (de) 1988-09-07
FI880003A (fi) 1988-08-27
JPS63235608A (ja) 1988-09-30
FI89976C (fi) 1996-12-23
DK8588A (da) 1988-08-27
NO880836D0 (no) 1988-02-25
DE3766360D1 (de) 1991-01-03
FI880003A0 (fi) 1988-01-04
PL158264B1 (en) 1992-08-31
CH673681A5 (no) 1990-03-30
PL270836A1 (en) 1988-12-08
FI89976B (fi) 1993-08-31
ES2019923B3 (es) 1991-07-16
NO880836L (no) 1988-08-29

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