The device has a rod with a main bearing eye at one end, a piston bolt bearing eye at the other for connection to a piston via a piston bolt mounted in an eccentric ring, a locking arrangement mounted on the rod for selectively fixing the eccentric ring in...

Pistons, each having an upper dead center position, are accommodated for reciprocating motion in respective cylinders. The upper dead center position of each piston is altered to vary engine compression ratio by setting drive for turning setting shaft (11)...

The engine has a gas intake channel (4) opening into a passage (3), for each cylinder. The channel is divided by a dividing wall (5) over at least part of its length, into two part channels (4.1,4.2). At least one part channel has a groove-like profiling e...