Abstract

The axial internal combustion engine comprises at least one cylinder (100), a piston assembly (110) within the cylinder defining a combustion chamber (200) where a fuel-air-oil mixture is compressed in one stroke of the piston assembly (110), and a pump chamber (300) for the suction of air to be drawn into the combustion chamber (200) in said stroke of the piston assembly (110) for subsequent explosion of the fuel- air-oil mixture compressed in the combustion chamber (200). The piston assembly (110) comprises a piston head (111), a piston body (112), and a connecting rod (135) connected to the piston head (111) and with a cam follower (150) at one end (140) to bear on a surface (410) of a single power cam (400). Displacement of the piston assembly (110) within the cylinder (100) causes the cam follower (150) to roll onto surface (410) causing power cam (400) to be rotated.

IPC Classes  ?

• F02B 75/26 - Engines with cylinder axes coaxial with, or parallel or inclined to, main-shaft axisEngines with cylinder axes arranged substantially tangentially to a circle centred on main-shaft axis
• F01B 3/04 - Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis the piston motion being transmitted by curved surfaces

Abstract

It comprises one or more cylinders with pistons therein and mutually opposed power cams connected to respective first and second rotary shafts. The reciprocating pistons act on the power cams to impart a rotating motion to the rotary shafts. An attachment device is provided for connecting the rotary shafts to each other. The attachment device includes a shifting device for changing the relative angular position of the first and second rotary shafts. The result is engine distribution and compression ratio are changed dynamically.

IPC Classes  ?

• F01B 7/12 - Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on same main shaft using rockers and connecting-rods
• F02B 75/28 - Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
• F02B 25/08 - Engines with oppositely-moving reciprocating working pistons
• F01B 3/10 - Control of working-fluid admission or discharge peculiar thereto
• F02D 15/00 - Varying compression ratio
• F01B 3/04 - Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis the piston motion being transmitted by curved surfaces
• F02B 75/02 - Engines characterised by their cycles, e.g. six-stroke
• F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups

Abstract

It comprises one or more cylinders (120, 130) with pistons (140, 150, 160, 170) therein and mutually opposed power cams (300, 400) connected to respective first and second rotary shafts (500, 600). Reciprocation of pistons (140, 150, 160, 170) results in they act on the power cams (300, 400) imparting a rotating motion to the rotary shafts (500, 600). An attachment device (700) is provided for connecting the rotary shafts (500, 600) to each other. The attachment device (700) comprising shifting means (705) for changing the relative angular position of the first and second rotary shafts (500, 600). This results in that engine distribution and compression ratio are changed dynamically.

IPC Classes  ?

• F02B 25/08 - Engines with oppositely-moving reciprocating working pistons
• F02D 15/00 - Varying compression ratio
• F01B 3/04 - Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis the piston motion being transmitted by curved surfaces