Abstract: An internal combustion engine comprising at least one pair of opposed, reciprocating pistons forming a combustion chamber therebetween a crankshaft driven by the pistons via respective drive linkages. The outer piston furthest from the crankshaft comprises a skirt extending from its perimeter towards the crankshaft to form a cylinder within which the other, inner piston reciprocates.
Abstract: An internal combustion engine comprising at least one cylinder and a pair of opposed, reciprocating pistons within the cylinder forming a combustion chamber therebetween. The engine has at least one fuel injector disposed at least partly within the cylinder, the fuel injector having a nozzle that is positioned within the combustion chamber and through which the fuel is expelled into the combustion chamber, wherein the nozzle is exposed directly within the combustion chamber.
Abstract: An internal combustion engine comprising at least one cylinder) and a crankshaft disposed at one end of the cylinder. Within each cylinder there is a pair of opposed, reciprocating pistons that form a combustion chamber (28) therebetween, including an outer piston being the piston furthest from the crankshaft and an inner piston. The pistons drive the crankshaft (14) via respective drive linkages. The drive linkage for the outer piston is external to the cylinder.
Abstract: The invention provides a 2-stroke internal combustion engine comprising two opposed cylinders, each cylinder housing two opposed pistons and having at least one exhaust port and at least one intake port, and a crankshaft having asymmetrically arranged journals and scotch-yoke mechanisms for driving the journals from the pistons. The pistons in each cylinder operate to open its exhaust port or ports before its intake port or ports and to close its exhaust port or ports before its intake port or ports.
Abstract: The invention provides a 2-stroke internal combustion engine comprising two opposed cylinders, each cylinder housing two opposed pistons and having at least one exhaust port and at least one intake port, and a crankshaft having asymmetrically arranged journals and scotch-yoke mechanisms for driving the journals from the pistons. The pistons in each cylinder operate to open its exhaust port or ports before its intake port or ports and to close its exhaust port or ports before its intake port or ports.