GB478286A - Improvements in or relating to devices for eliminating torque variations in shaft systems, more particularly for suppressing torsional vibrations in internal combustion engine crank shafts - Google Patents

Improvements in or relating to devices for eliminating torque variations in shaft systems, more particularly for suppressing torsional vibrations in internal combustion engine crank shafts

Info

Publication number
GB478286A
GB478286A GB25644/36A GB2564436A GB478286A GB 478286 A GB478286 A GB 478286A GB 25644/36 A GB25644/36 A GB 25644/36A GB 2564436 A GB2564436 A GB 2564436A GB 478286 A GB478286 A GB 478286A
Authority
GB
United Kingdom
Prior art keywords
crank
extension
counterweight
masses
engaging
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
Application number
GB25644/36A
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.)
Curtiss Aeroplane and Motor Corp
Original Assignee
Curtiss Aeroplane and Motor Corp
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 Curtiss Aeroplane and Motor Corp filed Critical Curtiss Aeroplane and Motor Corp
Publication of GB478286A publication Critical patent/GB478286A/en
Expired 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

478,286. Torsional vibration-dampers. REED PROPELLER CO., Inc. Sept. 21. 1936, Nos. 25644 and 25645. Convention dates, Sept. 21, 1935 and Aug. 19, 1936. [Class 108 (iii)] [Also in Group XXVI] In means for eliminating torque vibrations in shafts, especially torsional vibrations in internal-combustion-engine crank shafts, an oscillating mass has a surface which rocks on a surface associated with a shaft-extension member. The coacting surfaces are relatively curved, and the centre of curvature of at least one of them is external to the confines of the mass. In the construction shown in Fig. 1, the counterweight rocks about the end of the crank cheek 16. The weight comprises two halves 20, 20a embracing the extension 22 and secured bv bolts 24. The extension has side abutments 25 against which are seated hardened rocker-plates 26 which the counterweight abuts. The counterweight has a straight face 28 and the crank shaft plates convex profiles 30, or the arrangement may be reversed, or both parts have curved surfaces. The crank extension 22 has arcuate profiles 32 to locate the counterweight against endwise motion, and clearance is provided at 36 to prevent excessive rocking motion. In the case of engines with cylinders in line and long crank shafts with spaced crank-pin masses, the crank shaft system may have more than one frequency of synchronous vibration. Masses of corresponding frequency may be used. In a carrier member, angularly disposed masses with inwardly facing abutments are provided, against which rock the faces of rocker masses pressed outwardly by springs. Circumferential movement is prevented by end profiles engaging retaining plates. In the modification shown in Fig. 6, the balance weight 220 is mounted by means of recesses containing V-shaped sides upon a plug 240 engaging a plug 242 mounted in a V-sided recess in the crank extension. The plugs have inter-engaging rocking surfaces struck from centres exterior to the weight. The weight is adapted to roll around a cylindrical element 252, and its movement is limited by the faces 258 engaging the extension end 256. In this construction, the surfaces in rocking contact lie on the shaft centre side of the gravity of the mass.
GB25644/36A 1935-09-21 1936-09-21 Improvements in or relating to devices for eliminating torque variations in shaft systems, more particularly for suppressing torsional vibrations in internal combustion engine crank shafts Expired GB478286A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US478286XA 1935-09-21 1935-09-21

Publications (1)

Publication Number Publication Date
GB478286A true GB478286A (en) 1938-01-17

Family

ID=21951212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25644/36A Expired GB478286A (en) 1935-09-21 1936-09-21 Improvements in or relating to devices for eliminating torque variations in shaft systems, more particularly for suppressing torsional vibrations in internal combustion engine crank shafts

Country Status (3)

Country Link
DE (1) DE689835C (en)
FR (1) FR812425A (en)
GB (1) GB478286A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2331571A (en) * 1997-09-09 1999-05-26 Luk Lamellen & Kupplungsbau Vibration damper for the crankshaft of a piston engine
FR2784728A1 (en) * 1998-10-16 2000-04-21 Luk Lamellen & Kupplungsbau Automotive crankshaft mass balance vibration damper for transverse engine installation remains effective at high engine temperature

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2331571A (en) * 1997-09-09 1999-05-26 Luk Lamellen & Kupplungsbau Vibration damper for the crankshaft of a piston engine
GB2331571B (en) * 1997-09-09 2002-06-26 Luk Lamellen & Kupplungsbau Vibration damper for the crankshaft of a piston engine
FR2784728A1 (en) * 1998-10-16 2000-04-21 Luk Lamellen & Kupplungsbau Automotive crankshaft mass balance vibration damper for transverse engine installation remains effective at high engine temperature
DE19949206B4 (en) * 1998-10-16 2009-04-02 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Piston engine with torsional vibration damper and torsional vibration damper for a piston engine

Also Published As

Publication number Publication date
DE689835C (en) 1940-04-08
FR812425A (en) 1937-05-10

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