V-TYPE COMPRESSION RATIO VARIABLE INTERNAL COMBUSTION ENGINE

摘要

A variable compression ratio V-type internal combustion engine of the present invention joins the cylinder blocks of two cylinder groups together and makes the joined cylinder blocks 10 move relative to a crankcase 20. The variable compression ratio V-type internal combustion engine comprises a first relative movement mechanism 30 which makes one cylinder group side of the cylinder block move relatively and a second relative movement mechanism 40 which makes the other cylinder group side of the cylinder block move relatively. The first relative movement mechanism and the second relative movement mechanism can be independently controlled, and a first relative movement distance at one cylinder group side of the cylinder block in the direction of the centerline of the engine CE which passes through the center of the crank shaft as seen in the front plan view caused by the first relative movement mechanism and a second relative movement distance at the other cylinder group side of the cylinder block in the direction of the centerline of the engine caused by the second relative movement mechanism are able to made different.