Paragraphs

Claims

Paragraph 1 : Crankcase

The crankcase [1] comprises two crankshafts [4] and [5] arranged parallel to one another, one with a long-stroke crank [4], the other with a short-stroke crank [5]; the two cylinders [2] and [3], provided respectively with pistons [6] and [8] and connecting rods [7] and [9], are respectively arranged above one of the two crankshafts [4] and [5].

The crank of the short-stroke crankshaft [5] coacts with the connecting rod [9] of the piston [8] in the smaller cylinder [3] and the crank of long-stroke crankshaft [4] coacts with the connecting rod [7] of the piston [6] in the larger cylinder [2].

The two cylinders [2] and [3] are connected one by one, from one row to the other, through a recess in the cylinder head [10], so as to form a pair of cylinders [2] and [3] in communication with each other.

Claims