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Patent Searching and Data


Title:
VARIABLE COMPRESSION DEVICE AND ENGINE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/039451
Kind Code:
A1
Abstract:
This variable compression device is provided with: a piston rod (6); a connection member (7a) connected to the piston rod; a fluid chamber (R3) which is provided between the connection member and the piston rod and which, when an operating fluid having increased pressure is supplied thereto, moves the piston rod relative to the connection member in a direction in which a compression ratio increases; and a restriction member (15) which can come into contact with and separate from the piston rod and which, when the piston rod is moved in the direction in which the compression ratio increases, comes into contact with the piston rod to restrict the movement of the piston rod so as to maintain the compression ratio.

Inventors:
MASUDA YUTAKA (JP)
YAMADA TAKAYUKI (JP)
HIROSE TAKAYUKI (JP)
Application Number:
PCT/JP2018/030763
Publication Date:
February 28, 2019
Filing Date:
August 21, 2018
Export Citation:
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Assignee:
IHI CORP (JP)
International Classes:
F02B75/04; F02B75/32; F02D15/02
Domestic Patent References:
WO2016182000A12016-11-17
WO2015108178A12015-07-23
WO2015108182A12015-07-23
Foreign References:
JP2014020375A2014-02-03
JPH11294210A1999-10-26
JPH11257110A1999-09-21
JPH0828314A1996-01-30
US6394047B12002-05-28
US20130247879A12013-09-26
JP2015124639A2015-07-06
JP2017159610A2017-09-14
JP2014020375A2014-02-03
Other References:
See also references of EP 3674528A4
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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