Engine assembly including cam for z-type engines

A Z-twin engine (100), comprising:

• (a) two horizontally opposed, vertically offset parallel cylinders;
• (b) a central camshaft (502) driving a first cam (418) and a second cam (416), wherein the first cam (418) is configured to operate a first set of side valves of the cylinders along a first diagonal axis (B-B′);
• wherein the second cam (416) is configured to operate a second set of side valves of the cylinders along the first diagonal axis (B-B′), and wherein the central camshaft (502) comprises a primary drive gear (210) of the engine;
• and
• (c) two counterbalancing cranks coupled to the cylinders, each crank comprising a secondary gear rotatably coupled to the primary drive gear, and wherein the secondary gears of the cylinders are diametrically opposite to each other, wherein placement of the two cylinders relative to the diametrical orientation of the primary and secondary gear forms a Z-shape, which allows for vibration cancellation in the engine, and wherein the horizontally opposed cylinder position along with the counterbalancing cranks together provide for a compact;
• simple and efficient engine design.

A Z-type internal combustion engine (100) comprising:

• (a) a primary drive gear (210) coupled to a camshaft (212), wherein a first cam (418) of the camshaft (212) is coupled to a first valve (216) of a first cylinder (222) and a second valve (220) of a second cylinder (224) diagonally along a first diagonal axis (B-B′), and wherein a second cam (416) of the camshaft (212) is coupled to a third valve (422) of the first cylinder and a fourth valve (423) of the second cylinder along the first diagonal axis (B-B′);
• (b) a first secondary gear (206) rotatably coupled to the primary drive gear (210), and further coupled to a first piston (226) of the first cylinder (222), the first secondary gear configured to move with the first piston horizontally within the first cylinder along a first horizontal axis (D-D′);
• (c) a second secondary gear (208) rotatably coupled to the primary drive gear (210), the first secondary gear and the second secondary gear are coupled to diametrically opposite ends of the primary drive gear along a second diagonal axis, wherein the second secondary gear is further coupled to a second piston of the second cylinder, wherein the second secondary gear is configured to move with the second piston horizontally within the second cylinder along a second horizontal axis, and wherein the second cylinder is (i) parallel to, (ii) horizontally opposed to, and (iii) vertically offset from the first cylinder, wherein the first horizontal axis, the second diagonal axis, the second horizontal axis together form a Z-shape of the internal combustion engine resulting in a more compact engine with reduced vibrations and higher efficiency;
• (d) a flywheel (412) rotatably coupled to the primary drive gear, wherein the primary drive gear is configured to rotate the flywheel in an opposite direction, wherein a series of planetary gears is rotatably coupled to the flywheel;
• (e) an impeller (414) coupled to an intake side of the engine through the series of planetary gears, wherein spinning of the flywheel spins the planetary gears, which spins the impeller and provides additional air/fuel mixture into the engine thereby supercharging the engine;
• and
• (f) an expeller (426) coupled to an exhaust side of the engine, wherein spinning of the flywheel spins the expeller and provides a turbine assisted exhaust evacuation for the engine, thereby decreasing an overall temperature of the engine and decreasing exhaust contamination.