An engine assembly includes an intermittent internal combustion engine having an engine shaft, a turbine having a turbine shaft, an output shaft for driving a load, and a gearbox having a first portion and a second portion. The engine shaft is in engagement with an accessory via the first portion. The turbine shaft is in driving engagement with the output shaft via the second portion. The gearbox is configurable between an engaged and a disengaged configurations. In the disengaged configuration, the first and second portions are decoupled, and the engine shaft and the turbine shaft are rotatable independently from each other. In the engaged configuration, the first and second portions are coupled, and the engine shaft and the turbine shaft are drivingly engaged with each other via the coupled first and second portions.

An engine assembly includes an intermittent internal combustion engine having an engine shaft, a turbine having a turbine shaft, an output shaft for driving a load, and a gearbox having a first portion and a second portion. The engine shaft is in engagement with an accessory via the first portion. The turbine shaft is in driving engagement with the output shaft via the second portion. The gearbox is configurable between an engaged and a disengaged configurations. In the disengaged configuration, the first and second portions are decoupled, and the engine shaft and the turbine shaft are rotatable independently from each other. In the engaged configuration, the first and second portions are coupled, and the engine shaft and the turbine shaft are drivingly engaged with each other via the coupled first and second portions.

In an internal combustion engine for a saddle riding vehicle, in which a gear transmission and a shift drum of a shift change device is stored in a crankcase, the gear transmission having a plurality of transmission shafts parallel to a crankshaft extending in a vehicle width direction, a single pump shaft common to first and second oil pumps is rotatably supported by the crankcase. First oil pump rotors of the first oil pump are disposed at a mating face of a pair of left and right crankcase half bodies. A second oil pump rotor of the second oil pump is disposed between a pump gear and the first oil pump and at a side surface, on a side opposite to the mating face, of one crankcase half body out of the pair of left and right crankcase half bodies, the pump gear being arranged in the pump shaft.

In an internal combustion engine for a saddle riding vehicle, in which a gear transmission and a shift drum of a shift change device is stored in a crankcase, the gear transmission having a plurality of transmission shafts parallel to a crankshaft extending in a vehicle width direction, a single pump shaft common to first and second oil pumps is rotatably supported by the crankcase. First oil pump rotors of the first oil pump are disposed at a mating face of a pair of left and right crankcase half bodies. A second oil pump rotor of the second oil pump is disposed between a pump gear and the first oil pump and at a side surface, on a side opposite to the mating face, of one crankcase half body out of the pair of left and right crankcase half bodies, the pump gear being arranged in the pump shaft.

Electric machine assemblies and methods of manufacturing and operating electric machine assemblies for internal combustion engines are provided. The electric machine assembly includes an electric machine configured to generate electric current by induction via a prime mover causing rotation of one of a rotor and a stator with respect to the other one of the rotor and the stator. The electric machine assembly also includes a torque transmitter including a rotating output driver coupled to the prime mover of the electric machine. The torque transmitter includes a rotating input driver configured to receive a rotary input transmitted from a crankshaft of an internal combustion engine. The rotating input driver is coupled to the rotating output driver to actuate the rotating output driver at a plurality of gear ratios.

Electric machine assemblies and methods of manufacturing and operating electric machine assemblies for internal combustion engines are provided. The electric machine assembly includes an electric machine configured to generate electric current by induction via a prime mover causing rotation of one of a rotor and a stator with respect to the other one of the rotor and the stator. The electric machine assembly also includes a torque transmitter including a rotating output driver coupled to the prime mover of the electric machine. The torque transmitter includes a rotating input driver configured to receive a rotary input transmitted from a crankshaft of an internal combustion engine. The rotating input driver is coupled to the rotating output driver to actuate the rotating output driver at a plurality of gear ratios.

The aircraft (10) includes: at least one electric motor (135); at least one stand-alone electrical power supply (110, 120) supplying power to the electric motor; propulsion elements (130) referred to as auxiliary propulsion elements, included in the group including: a stand-alone electrical power supply (130) supplying power to the electric motor, a power supply converting thermal energy into electrical energy and supplying power to the electric motor, and an internal combustion engine; and a structure (100) configured to integrate each electric motor, each stand-alone electrical power supply and the auxiliary propulsion elements, the parameters of the structure being substantially identical regardless of the auxiliary propulsion elements. A method of fitting out such an aircraft is also described.

The aircraft (10) includes: at least one electric motor (135); at least one stand-alone electrical power supply (110, 120) supplying power to the electric motor; propulsion elements (130) referred to as auxiliary propulsion elements, included in the group including: a stand-alone electrical power supply (130) supplying power to the electric motor, a power supply converting thermal energy into electrical energy and supplying power to the electric motor, and an internal combustion engine; and a structure (100) configured to integrate each electric motor, each stand-alone electrical power supply and the auxiliary propulsion elements, the parameters of the structure being substantially identical regardless of the auxiliary propulsion elements. A method of fitting out such an aircraft is also described.

An outboard motor includes an engine including a crankshaft that extends in a horizontal or substantially horizontal direction and perpendicular or substantially perpendicular to a direction of a thrust force, a cylinder, a first gear provided on a balance shaft disposed in a direction that intersects with a direction in which the cylinder extends, a second gear, a drive shaft, and a propeller.

An air cooling device facilitates the cooling and/or thermal protection of a rotating member of a vehicle exposed to a proximately located heat source of the vehicle. The air cooling device may include a plurality of airfoils projecting radially outward from the rotating member for forming a flowing, thermally insulating, layer of air about the rotating member.