WO1996035864A1 - Mecanisme a manivelle a coude variable - Google Patents

Mecanisme a manivelle a coude variable Download PDF

Info

Publication number
WO1996035864A1
WO1996035864A1 PCT/PL1996/000008 PL9600008W WO9635864A1 WO 1996035864 A1 WO1996035864 A1 WO 1996035864A1 PL 9600008 W PL9600008 W PL 9600008W WO 9635864 A1 WO9635864 A1 WO 9635864A1
Authority
WO
WIPO (PCT)
Prior art keywords
crank
wheels
eccentric
crank mechanism
following features
Prior art date
Application number
PCT/PL1996/000008
Other languages
English (en)
Inventor
Antoni Wierzbicki
Original Assignee
Antoni Wierzbicki
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 Antoni Wierzbicki filed Critical Antoni Wierzbicki
Publication of WO1996035864A1 publication Critical patent/WO1996035864A1/fr

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
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/22—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric
    • F16H21/28—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric with cams or additional guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups

Definitions

  • the object of this invention is the crank mechanism of variable crank throw in particular for internal fuel piston engine as well as a piston compressor.
  • crank mechanisms of variable crank throw equipped with piston which is connected to the connecting-rod by means of piston pin and with crankshaft comprised of eccentric sleeve as an indirect component between crank pin of crankshaft and connecting rod big end.
  • Internal opening axis of sleeve is displaced in relation to external axis of cylindrical in size of eccentric.
  • Eccentric sleeve is joint driving mechanism guaranteed angular speed of eccentric sleeve.
  • Eccentric sleeve is joint driving mechanism to assure angular speed of eccentric sleeve relative to crank pin of crankshaft and mechanism controlling angular position of eccentric sleeve to specified angle with respect to crank throw of crankshaft.
  • crank mechanism of variable crank throw characterized so that between crank pin of crankshaft and connecting rod big end are located one inside the other double arrangement of eccentric sleeve ending with gears.
  • On the eccentric sleeves cradle is seated on which are idle wheels on the upper part of cradle and idle wheel axis is perpendicular to wheels axis of eccentric sleeves.
  • eccentric sleeve wheels and idle wheels are cylindrical and common idle wheels shaft is rotating in the upper part of cradle and parallel to eccentric sleeve wheels axis.
  • Driving wheel frontal surface of eccentric sleeve has passage, in which slide is driven seated in corresponding crank surface.
  • crank frontal surface has passage in which is driven slide seated in corresponding driving wheel surface.
  • Crank mechanism has two crankshafts situated parallel comparative to each other, symmetrical against cylinder axis.
  • crank mechanism shortened piston stroke for engine and its prolonged for compressor this raises efficiency of crank mechanism.
  • Using a two crankshaft engine eliminates piston power influence on the cylinder walls that causes increased static power on crank, therefore improves efficiency.
  • Fig.l presents longitudinal section of crank mechanism components with cone shaped wheels interrelated to eccentric drive
  • Fig. 2 presents longitudinal section of crank mechanism components with cylindrical wheels, interrelated to eccentric drive
  • Fig.3 is crossection of crank mechanism with two crankshafts
  • Fig. 4 presents view of driven slide passage:
  • Fig. 5 is movement curve for engine, and
  • Fig.l between crank pin 1 of crankshaft and big end 2 of connecting rod 3 are located one in the other two off centre mounted sleeves 4 and 5, ending with gears.
  • Wheels 6 and 7 of sleeves 4 and 5 and idle wheels are cone shaped wheels. Idle wheel is rotating in the upper part of cradle 9, fasten swing on sleeves 4 and 5.
  • Axis of idle wheel 9 is perpendicular to the axis of wheels 6 and 7 of eccentric sleeves 4 and 5.
  • wheels 6a and 7a of sleeves 4 and 5 and idle wheels 8a and 8b seated together on common shaft 10 are cylindrical wheels.
  • Shaft 10 is rotating in the upper part of cradle 9 and parallel to the axis of wheel 6a and 7a of eccentric sleeves 4 and 5.
  • On the frontal surface drive wheel 6 of eccentric sleeve 4 has passage with driving slide 11 seated in its crank surface 12 of crankshaft.
  • crank frontal surface 12a has passage, in which driving slide 11a is located, seated in frontal surface of driving wheel 6a.
  • Crank mechanism in the variation for fuel engines has two crankshafts 13 and 14, situated parallel relative to each other and symmetrical relative to cylinder axis 15.
  • crank drive 12 of crankshaft is transmitted directly to the external eccentric sleeve 4 with driving slide 11 and simultaneously with gears 6,7 and 8 to the external eccentric sleeve 5, causing this type of revolutions opposite to crankshaft revolutions.
  • idle wheel 8 mates displacing and swinging with connecting rod shank 3, which causes rotating motion - but also moves backward 80 and forward oscillatory relative to the main shaft driving simultaneously through idle wheel 8 internal eccentric opposite relative to main shaft.
  • Rotary movement of internal eccentric sleeve is variable movement and depends on actual radius of sleeve eccentric 5.
  • crank pin opening axis 2 of connecting rod 3 describes equation:
  • Angles ⁇ and ⁇ can be used within described range to form movement curve.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention vise à augmenter l'efficacité d'un mécanisme à manivelle et est caractérisée en ce que deux manchons excentriques (4 et 5), se terminant par des engrenages, sont imbriqués l'un dans l'autre entre le maneton (1) du vilebrequin et la tête (2) de la bielle (3). Un berceau (9), sur lequel sont placés des pignons intermédiaires, est monté sur les manchons excentriques (4 et 5).
PCT/PL1996/000008 1995-05-09 1996-04-17 Mecanisme a manivelle a coude variable WO1996035864A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.308560 1995-05-09
PL30856095A PL308560A1 (en) 1995-05-09 1995-05-09 Crank mechanism of variable crank radius

Publications (1)

Publication Number Publication Date
WO1996035864A1 true WO1996035864A1 (fr) 1996-11-14

Family

ID=20064993

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL1996/000008 WO1996035864A1 (fr) 1995-05-09 1996-04-17 Mecanisme a manivelle a coude variable

Country Status (2)

Country Link
PL (1) PL308560A1 (fr)
WO (1) WO1996035864A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152955A (en) * 1975-01-02 1979-05-08 Mcwhorter Edward M Engine compound crankshaft
DE3634536A1 (de) * 1986-10-10 1987-02-19 Toan Dat Tran Kurbeltrieb mit doppelten kolbenhueben
DE4032217A1 (de) * 1990-10-11 1992-04-16 Norbert Pretsch Hubkolbenmaschine
GB2258271A (en) * 1991-08-01 1993-02-03 Ford Motor Co Variable compression ratio i.c.engine.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152955A (en) * 1975-01-02 1979-05-08 Mcwhorter Edward M Engine compound crankshaft
DE3634536A1 (de) * 1986-10-10 1987-02-19 Toan Dat Tran Kurbeltrieb mit doppelten kolbenhueben
DE4032217A1 (de) * 1990-10-11 1992-04-16 Norbert Pretsch Hubkolbenmaschine
GB2258271A (en) * 1991-08-01 1993-02-03 Ford Motor Co Variable compression ratio i.c.engine.

Also Published As

Publication number Publication date
PL308560A1 (en) 1996-11-12

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