WO2008015532A3 - Counterweight - Google Patents

Counterweight Download PDF

Info

Publication number
WO2008015532A3
WO2008015532A3 PCT/IB2007/002180 IB2007002180W WO2008015532A3 WO 2008015532 A3 WO2008015532 A3 WO 2008015532A3 IB 2007002180 W IB2007002180 W IB 2007002180W WO 2008015532 A3 WO2008015532 A3 WO 2008015532A3
Authority
WO
WIPO (PCT)
Prior art keywords
interference region
counterweight
piston
region
weight portion
Prior art date
Application number
PCT/IB2007/002180
Other languages
French (fr)
Other versions
WO2008015532A2 (en
Inventor
Satoshi Kameyama
Toru Yamamoto
Original Assignee
Toyota Motor Co Ltd
Aichi Steel Corp
Satoshi Kameyama
Toru Yamamoto
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 Toyota Motor Co Ltd, Aichi Steel Corp, Satoshi Kameyama, Toru Yamamoto filed Critical Toyota Motor Co Ltd
Publication of WO2008015532A2 publication Critical patent/WO2008015532A2/en
Publication of WO2008015532A3 publication Critical patent/WO2008015532A3/en

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

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

In a counterweight (2) according to the invention, a weight portion (8) has an outer-radius extended portion (8a) that is formed in an overlapping region between a piston-lower-end non-interference region (Sb) and a cylinder-block non-interference region (Sc) that are located radially outwardly of a reference non-interference region (Sa). Thus, the weight portion (8) is expanded radially outward from the reference non-interference region (Sa) without interfering with a cylinder block (16) and the lower end face (6a) of a piston (6). It is thus possible to effectively increase the moment of inertia without incurring a significant increase in the weight of the counterweight (2).
PCT/IB2007/002180 2006-07-31 2007-07-30 Counterweight WO2008015532A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006208603A JP2008032177A (en) 2006-07-31 2006-07-31 Counter weight
JP2006-208603 2006-07-31

Publications (2)

Publication Number Publication Date
WO2008015532A2 WO2008015532A2 (en) 2008-02-07
WO2008015532A3 true WO2008015532A3 (en) 2008-03-27

Family

ID=38814308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/002180 WO2008015532A2 (en) 2006-07-31 2007-07-30 Counterweight

Country Status (2)

Country Link
JP (1) JP2008032177A (en)
WO (1) WO2008015532A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5055228B2 (en) * 2008-09-02 2012-10-24 本田技研工業株式会社 Crankshaft and engine with crankshaft
JP5624929B2 (en) * 2011-03-31 2014-11-12 本田技研工業株式会社 engine
JP5790158B2 (en) * 2011-05-31 2015-10-07 日産自動車株式会社 Balance weight arrangement structure of crankshaft of internal combustion engine
US10167924B2 (en) 2016-03-02 2019-01-01 Hyundai Motor Company Crankshaft having balance weight
DE202021100494U1 (en) * 2021-02-02 2021-02-16 Liebherr-Components Colmar Sas Crankshaft with at least one counterweight

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1124066A1 (en) * 2000-02-11 2001-08-16 Renault Crankshaft for an internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02150444U (en) 1989-05-22 1990-12-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1124066A1 (en) * 2000-02-11 2001-08-16 Renault Crankshaft for an internal combustion engine

Also Published As

Publication number Publication date
WO2008015532A2 (en) 2008-02-07
JP2008032177A (en) 2008-02-14

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