Abstract: A balance assembly for an engine is provided. The balance assembly includes a first electric motor coupled to the engine and configured to rotate a first eccentric mass relative to the engine, the first eccentric mass being coupled to a first shaft of the first electric motor, and a second electric motor coupled to the engine and configured to rotate a second eccentric mass relative to the engine, the second eccentric mass being coupled to a second shaft of the second electric motor. The first and second electric motors are configured to rotate the first and second eccentric masses in order to balance a vibration characteristic of the engine.

Abstract: A twin charged engine is provided comprising a catalytic converter; a first compressor which, when operated, increases engine load; a second compressor which extracts energy from the exhaust gases to increase the overall engine efficiency; and a controller configured to operate one of at least two modes. A first mode is a standard operating mode in which the system is configured to optimise the efficiency of running of the engine. A second mode is for use under special conditions.

Abstract: A balance assembly for an engine is provided. The balance assembly includes a first electric motor coupled to the engine and configured to rotate a first eccentric mass relative to the engine, the first eccentric mass being coupled to a first shaft of the first electric motor, and a second electric motor coupled to the engine and configured to rotate a second eccentric mass relative to the engine, the second eccentric mass being coupled to a second shaft of the second electric motor. The first and second electric motors are configured to rotate the first and second eccentric masses in order to balance a vibration characteristic of the engine.

Abstract: An electrical machine and method for driving at least one ancillary device of a motor is provided wherein the electrical machine comprises a stator, configured to be rotated, and a rotor, rotatably mounted relative to the stator, coupled to the ancillary device. The speed of the rotor may be a function of the rotational speed of the stator and the frequency of a supply current supplied to the electrical machine and thus drives the ancillary device at a demanded load/speed.

Abstract: A twin charged engine is provided comprising a catalytic converter; a first compressor which, when operated, increases engine load; a second compressor which extracts energy from the exhaust gases to increase the overall engine efficiency; and a controller configured to operate one of at least two modes. A first mode is a standard operating mode in which the system is configured to optimise the efficiency of running of the engine. A second mode is for use under special conditions.

Abstract: An engine is provided herein. The engine includes a crankshaft, an engine casing, an oil pump, and an accessory drive, the oil pump having an input member which is driven from the crankshaft at a location on the opposite side of the accessory drive to the engine casing.

Abstract: An electrical machine and method for driving at least one ancillary device of a motor is provided wherein the electrical machine comprises a stator, configured to be rotated, and a rotor, rotatably mounted relative to the stator, coupled to the ancillary device. The speed of the rotor may be a function of the rotational speed of the stator and the frequency of a supply current supplied to the electrical machine and thus drives the ancillary device at a demanded load/speed.

Abstract: An engine is provided herein. The engine includes a crankshaft, an engine casing, an oil pump, and an accessory drive, the oil pump having an input member which is driven from the crankshaft at a location on the opposite side of the accessory drive to the engine casing.