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Patent Searching and Data


Title:
BEARING DEVICE FOR TURBOCHARGER
Document Type and Number:
WIPO Patent Application WO/2013/002142
Kind Code:
A1
Abstract:
The purpose of the present invention is, with respect to a first floating bush bearing disposed on a compressor housing side and a second floating bush bearing disposed on a turbine housing side, to improve oscillation stability when a turbine rotor revolves at a high speed, reduce the number of parts, and facilitate processing and assemblability. The present invention is characterized by being provided with the following: a bearing housing (13) for a turbocharger (1), a rotor shaft (16) that passes through the bearing housing (13), a first floating bush bearing (17) interposed between the bearing housing (13) and the rotor shaft (16) and disposed on a compressor housing (12) side and comprising a first floating bush, and a second floating bush bearing (18) that has the same shape as the first floating bush bearing (17) and is disposed on a turbine housing (11) side and comprises a second floating bush (20). The present invention is also characterized in that the inner bearing width (Li) of the first and second floating bushes is formed to be smaller than the outer bearing width (Lo) by the same proportion in both bushes.

Inventors:
NISHIDA HIDEAKI (JP)
Application Number:
PCT/JP2012/066000
Publication Date:
January 03, 2013
Filing Date:
June 22, 2012
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
NISHIDA HIDEAKI (JP)
International Classes:
F02B39/00; F16C17/18; F02B39/14
Domestic Patent References:
WO2007119400A12007-10-25
Foreign References:
JP2008190680A2008-08-21
JP2002138846A2002-05-17
JPH0536995Y21993-09-20
JP2009007935A2009-01-15
JP2003013710A2003-01-15
JPS6237625U1987-03-05
JPS59184327U1984-12-07
JP2009156333A2009-07-16
JP2007046642A2007-02-22
Other References:
See also references of EP 2728212A1
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (JP)
Patent business corporation Takahashi 松本 & partners (JP)
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Claims: