JPS57146911A - Crankshaft of engine for automobile - Google Patents

Crankshaft of engine for automobile

Info

Publication number
JPS57146911A
JPS57146911A JP3058081A JP3058081A JPS57146911A JP S57146911 A JPS57146911 A JP S57146911A JP 3058081 A JP3058081 A JP 3058081A JP 3058081 A JP3058081 A JP 3058081A JP S57146911 A JPS57146911 A JP S57146911A
Authority
JP
Japan
Prior art keywords
crank
torsional
vibration
journals
crankshaft
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
JP3058081A
Other languages
Japanese (ja)
Inventor
Akio Kinoshita
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP3058081A priority Critical patent/JPS57146911A/en
Publication of JPS57146911A publication Critical patent/JPS57146911A/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
    • F16C3/06—Crankshafts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PURPOSE:To reduce vibration of an engine and emission of noise, in a crankshaft of the reciprocating multi-cylinder engine for an automobile, by setting torsional rigidity of at least one of the crank pins to not lower than an equal level of torsional rigidity of crank journals. CONSTITUTION:Outside diameters of the first - fourth crank pins 26-29 are formed larger than outside diameters of crank journals 21-25 to obtain larger torsional rigidity of the crank pins 26-29 than torsional rigidity of the crank journals 21-25. The pitch of a vibration mode in torsional vibration of the crankshaft is located in the vicinity of the crank pin 29 and the crank journal 25 approximate to a flywheel 30, further the torsional displacement in the vicinity of the pitch tends to rapidly change. However, in this constituion, a severely changing part of the torsional vibration displacement is located between the journal 25 and the flywheel 30, and the torsional displacement of the journals 21-25 can be decreased to reduce input of vibration.
JP3058081A 1981-03-05 1981-03-05 Crankshaft of engine for automobile Pending JPS57146911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3058081A JPS57146911A (en) 1981-03-05 1981-03-05 Crankshaft of engine for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3058081A JPS57146911A (en) 1981-03-05 1981-03-05 Crankshaft of engine for automobile

Publications (1)

Publication Number Publication Date
JPS57146911A true JPS57146911A (en) 1982-09-10

Family

ID=12307785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3058081A Pending JPS57146911A (en) 1981-03-05 1981-03-05 Crankshaft of engine for automobile

Country Status (1)

Country Link
JP (1) JPS57146911A (en)

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