To provide a running gear structure of an internal combustion engine capable of reducing the size of the internal combustion engine. In a running gear structure of an internal combustion engine including a supercharger and a supercharger driving mechanism transmitting power to the supercharger and driving the supercharger, the supercharger driving mechanism is provided with driving force transmission members (a third intermediate gear and a fourth intermediate gear) disposed on a side opposite to cylinders of the internal combustion engine across valve trains driving a valve gear using, as a power supply, driving force of the crankshaft rotated by explosion in the cylinders. The valve train is disposed closer to an inner side of the internal combustion engine.

Methods and systems are disclosed for operating an engine that includes a knock control system. The methods and system provide for repurposing the engine knock control system to detect and mitigate piston slap. The methods and systems also seek to increase the signal to noise ratio for detecting piston slap.

A balance device for an internal combustion engine includes a crankshaft and a balance shaft. The crankshaft includes a CS eccentric weight. The balance shaft includes a BS eccentric weight. A CS connected point deviated from the CS main shaft, and a BS connected point deviated from the BS axial shaft are connected with a connection rod. A CS connection mechanism that enables relative rotation of the crankshaft and the connection rod is provided at the CS connected point. A BS connection mechanism that enables relative rotation of the balance shaft and the connection rod is provided at the BS connected point. A guide section guides a motion of the connection rod so that the balance shaft rotates in an opposite direction to the crankshaft.

A balance device for an internal combustion engine includes a crankshaft and a balance shaft. The crankshaft includes a CS eccentric weight. The balance shaft includes a BS eccentric weight. A CS connected point deviated from the CS main shaft, and a BS connected point deviated from the BS axial shaft are connected with a connection rod. A CS connection mechanism that enables relative rotation of the crankshaft and the connection rod is provided at the CS connected point. A BS connection mechanism that enables relative rotation of the balance shaft and the connection rod is provided at the BS connected point. A guide section guides a motion of the connection rod so that the balance shaft rotates in an opposite direction to the crankshaft.

The present invention concerns a torsion damper (1) between an input first element (3) and an output second element (5) mounted mobile in rotation relative to one another about a rotation axis X, comprising: at least one internal first spring (7), at least one external second spring (9), a first guide washer (11, 11) of the at least one internal first spring (7), a second guide washer (13, 13) of the at least one external second spring (9),
in which one of the guide washers (11, 11, 13, 13) includes at least one phasing member (110, 112) configured to come into contact with the at least one spring (7, 9) guided by the other guide washer (11, 11, 13, 13) to take up the force transmitted by said at least one spring (7, 9) guided by the other guide washer (11, 11, 13, 13).

The present invention concerns a torsion damper (1) between an input first element (3) and an output second element (5) mounted mobile in rotation relative to one another about a rotation axis X, comprising: at least one internal first spring (7), at least one external second spring (9), a first guide washer (11, 11) of the at least one internal first spring (7), a second guide washer (13, 13) of the at least one external second spring (9),
in which one of the guide washers (11, 11, 13, 13) includes at least one phasing member (110, 112) configured to come into contact with the at least one spring (7, 9) guided by the other guide washer (11, 11, 13, 13) to take up the force transmitted by said at least one spring (7, 9) guided by the other guide washer (11, 11, 13, 13).

A balanced rotary engine for applying torque to a drive shaft. The engine has an outer casing with a main drive case. A cylinder is rotably mounted in the casing and a piston is mounted to move longitudinally within the cylinder. Two connecting arms, each with a connecting end, one of the ends is connected to the piston, and two crankshafts, each one being rotably connected to the other connecting end of the connecting arms. Two drive wheels are contra-rotably connected to the respective first and second crankshafts. A fixed drive ring has a circumferentially disposed drive member surface. The fixed drive ring is mounted in the case so that the drive member surface faces the piston. The two drive wheels mesh with the drive ring.

A balanced rotary engine for applying torque to a drive shaft. The engine has an outer casing with a main drive case. A cylinder is rotably mounted in the casing and a piston is mounted to move longitudinally within the cylinder. Two connecting arms, each with a connecting end, one of the ends is connected to the piston, and two crankshafts, each one being rotably connected to the other connecting end of the connecting arms. Two drive wheels are contra-rotably connected to the respective first and second crankshafts. A fixed drive ring has a circumferentially disposed drive member surface. The fixed drive ring is mounted in the case so that the drive member surface faces the piston. The two drive wheels mesh with the drive ring.

A system and method for a combustion engine having an engine block with a V-shape, where eight cylinder passages form two banks of four passages. Each cylinder passage receives a piston from a set of pistons coupled to a crankshaft. Seven ignition devices couple to seven of the eight cylinder passages. Every 102.85 to 102.86 degrees of rotation of the crankshaft, one of the seven ignition devices trigger combustion.

A system and method for a combustion engine having an engine block with a V-shape, where eight cylinder passages form two banks of four passages. Each cylinder passage receives a piston from a set of pistons coupled to a crankshaft. Seven ignition devices couple to seven of the eight cylinder passages. Every 102.85 to 102.86 degrees of rotation of the crankshaft, one of the seven ignition devices trigger combustion.