JPS57107453A - Counterweight for crankshaft in internal combustion engine - Google Patents

Counterweight for crankshaft in internal combustion engine

Info

Publication number
JPS57107453A
JPS57107453A JP18124280A JP18124280A JPS57107453A JP S57107453 A JPS57107453 A JP S57107453A JP 18124280 A JP18124280 A JP 18124280A JP 18124280 A JP18124280 A JP 18124280A JP S57107453 A JPS57107453 A JP S57107453A
Authority
JP
Japan
Prior art keywords
counterweights
group
directions
combustion engine
internal combustion
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.)
Pending
Application number
JP18124280A
Other languages
Japanese (ja)
Inventor
Hideo Furukawa
Kazuyoshi Niihori
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP18124280A priority Critical patent/JPS57107453A/en
Priority to GB8137989A priority patent/GB2092235A/en
Priority to DE19813151091 priority patent/DE3151091A1/en
Publication of JPS57107453A publication Critical patent/JPS57107453A/en
Pending 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/20—Shape of crankshafts or eccentric-shafts having regard to balancing
    • 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
    • F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
    • F16F15/283—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same for engine crankshafts

Landscapes

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

Abstract

PURPOSE: To prevent load applied to main jounal bearing from being excessively increased by counterweights for a crankshafts in a V type 12-cylinder internal combustion engine, by arranging the counterweights in such specific directions that inertia force exerted to each journal bearing becomes minimum.
CONSTITUTION: Counterweights 1F, 6R, 3R, 4F are positioned in the directions of 180° with respect to rotary members B1, B6, B2, B4, respectively, and the phases of each pair of the counterweights in each group are shifted by a crank angle of α=60°±15° relative to each other. Further, the counterweights 1F, 1R in the first group and the counterweights 6F, 6R in the second group are positioned in the same directions, respectively, and the counterweights 3F, 3R in the second group and the counterweights 4F, 4R are positioned in the same directions, respectively. The counterweights 1F, 1R, 6F, 6R in the first and fourth groups and the counterweights 3F, 3R, 4F, 4R in the second and third groups are positioned in the opposite directions, respectively.
COPYRIGHT: (C)1982,JPO&Japio
JP18124280A 1980-12-23 1980-12-23 Counterweight for crankshaft in internal combustion engine Pending JPS57107453A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP18124280A JPS57107453A (en) 1980-12-23 1980-12-23 Counterweight for crankshaft in internal combustion engine
GB8137989A GB2092235A (en) 1980-12-23 1981-12-16 Counterbalanced Crankshaft
DE19813151091 DE3151091A1 (en) 1980-12-23 1981-12-23 "ARRANGEMENTS OF A CRANKSHAFT"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18124280A JPS57107453A (en) 1980-12-23 1980-12-23 Counterweight for crankshaft in internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57107453A true JPS57107453A (en) 1982-07-03

Family

ID=16097273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18124280A Pending JPS57107453A (en) 1980-12-23 1980-12-23 Counterweight for crankshaft in internal combustion engine

Country Status (3)

Country Link
JP (1) JPS57107453A (en)
DE (1) DE3151091A1 (en)
GB (1) GB2092235A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833940A (en) * 1987-02-06 1989-05-30 Toyota Jidosha Kabushiki Kaisha Crankshaft for a 90 degree V-type eight-cylinder internal combustion engine
CN104791367A (en) * 2015-04-28 2015-07-22 重庆科克发动机技术有限公司 Crankshaft of 16-cylinder V-type engine and dynamic balance calibration method of crankshaft

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604645A (en) * 1983-06-20 1985-01-11 Nissan Motor Co Ltd Crank shaft of v-type 6-cylinder internal-combustion engine
US8757027B2 (en) * 2010-09-01 2014-06-24 Ford Global Technologies, Llc Reduced mass crankshaft
US9273604B2 (en) 2013-02-08 2016-03-01 Electro-Motive Diesel, Inc. Crankshaft
EP3268624B1 (en) * 2015-03-11 2021-08-11 Promescon GmbH Crankschaft for an in-line combustion engine and in-line combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833940A (en) * 1987-02-06 1989-05-30 Toyota Jidosha Kabushiki Kaisha Crankshaft for a 90 degree V-type eight-cylinder internal combustion engine
CN104791367A (en) * 2015-04-28 2015-07-22 重庆科克发动机技术有限公司 Crankshaft of 16-cylinder V-type engine and dynamic balance calibration method of crankshaft

Also Published As

Publication number Publication date
GB2092235A (en) 1982-08-11
DE3151091A1 (en) 1982-06-24

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