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Title:
ACTUATOR OF VARIABLE COMPRESSION RATIO MECHANISM IN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/054241
Kind Code:
A1
Abstract:
Provided is an actuator of a variable compression ratio mechanism in an internal combustion engine, the actuator being capable of improving productivity. The actuator of a variable compression ratio mechanism in an internal combustion engine is provided with: an electric motor; a control shaft which has first and second journal parts and to which torque is transmitted from the electric motor; an arm link part which is disposed between the first journal part and the second journal part in an axial direction, extends in a radial direction from the control shaft, and is linked with the variable compression ratio mechanism in the internal combustion engine, the axial direction being a direction along the rotation axis of the control shaft and the radial direction being the radial direction of the rotation axis; a first housing which has an accommodation chamber for accommodating the arm link part, a radial directional opening section that opens in the radial direction from the accommodation chamber, and a first opening section that opens in the axial direction toward the first journal part from the accommodation chamber; and a second housing for closing the first housing, the second housing having a first bearing part for supporting the first journal part.

Inventors:
SUDA YOSHIHIRO (JP)
NAGAI KISHIRO (JP)
IKEGUCHI KEN BRYAN (JP)
Application Number:
PCT/JP2018/032799
Publication Date:
March 21, 2019
Filing Date:
September 05, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02B75/04; F02B75/32; F02D15/02
Domestic Patent References:
WO2013080673A12013-06-06
WO2016031392A12016-03-03
WO2016194510A12016-12-08
Foreign References:
JP2011169152A2011-09-01
JP2015145647A2015-08-13
JP2005113700A2005-04-28
JP2000038957A2000-02-08
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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