Title:
COMPRESSION RATIO VARIABLE MECHANISM
Document Type and Number:
Japanese Patent JP2019206964
Kind Code:
A
Abstract:
To suppress deterioration in durability.SOLUTION: A compression ratio variable mechanism V includes a first hydraulic chamber 168a formed between a piston and a piston rod or between the piston rod and a cross head pin 114a, a hydraulic pump P connected to the first hydraulic chamber 168a, and a pressure boosting mechanism 196 provided between the first hydraulic chamber 168a and the hydraulic pump P. By providing the pressure boosting mechanism 196, the compression ratio variable mechanism V can reduce the number of times of pressing by which a first switching mechanism 182 is pressed by a drive mechanism. Accordingly, the compression ratio variable mechanism V can suppress deterioration in the durability.SELECTED DRAWING: Figure 5
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Inventors:
HAYASHI MITSUAKI
MASUDA YUTAKA
MASUDA YUTAKA
Application Number:
JP2018104033A
Publication Date:
December 05, 2019
Filing Date:
May 30, 2018
Export Citation:
Assignee:
IHI CORP
International Classes:
F02D15/02; F02B75/04; F02B75/32; F16C7/06
Domestic Patent References:
| JP2016211462A | 2016-12-15 | |||
| JPS619602U | 1986-01-21 | |||
| JP2017120062A | 2017-07-06 | |||
| JP2011185417A | 2011-09-22 | |||
| JP2011522162A | 2011-07-28 | |||
| JP2017203429A | 2017-11-16 |
Foreign References:
| WO2015108182A1 | 2015-07-23 | |||
| US6397796B1 | 2002-06-04 |
Attorney, Agent or Firm:
Aomi patent office