Title:
VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2017160788
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce the vibration and noise generated in a variable compression ratio internal combustion engine having an offset crank.SOLUTION: A variable compression ratio internal combustion engine 10 is provided that includes: a cylinder block 12; a crank case 16; a crank cap 18 for rotatably supporting a crankshaft around rotating axial lines 32 in cooperation with the crank case; and a pair of relative position varying devices 20L, 20R, the rotating axial lines being offset with respect to a center axial line, and a pair of the relative position varying devices varying a relative position of the cylinder block with respect to the crank case along the center axial line 24. A distance Lhl between the offset-side axial line 36L of the relative position varying device and the center axial line 24 is longer than a distance Lhr between the other-side axial line 36R of the relative position varying device and the center axial line 24.SELECTED DRAWING: Figure 1
Inventors:
OKAWA MAKOTO
Application Number:
JP2016043054A
Publication Date:
September 14, 2017
Filing Date:
March 07, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D15/04; F02B75/04; F02F1/18
Attorney, Agent or Firm:
Patent business corporation Prospec patent office