A standby generator includes an air-cooled engine having a crankshaft, an alternator driven by the crankshaft to produce electrical power for distribution from the standby generator, and an engine cooling fan operatively coupled to the crankshaft on a side of the engine driving the alternator.

An engine assembly is provided that includes an engine having a crankshaft that is caused to rotate response to a firing of the engine, a backplate affixed to the engine and comprising one or more air flow passages formed therethrough, and an engine cooling fan operatively coupled to the crankshaft so as to be rotated by the crankshaft, the engine cooling fan coupled to the crankshaft on a side of the backplate opposite the engine. The engine assembly also includes a fan cover mounted over the engine cooling fan and secured to the backplate, the fan cover including an opening through which an air flow is provided to the engine cooling. The backplate and the fan cover collectively form an air guide that directs a flow of cooling air generated by the engine cooling fan through the one or more air flow passages of the backplate and to the engine.

A pressure variation in a fuel tank can be prevented, and leakage of liquid fuel can be prevented even if the fuel tank is inclined in a predetermined direction, without operation for opening and closing a breather passage. An engine generator includes: a first breather passage having an opening at a position above a liquid fuel in a tank bulge section when the engine generator is inclined to the right (corresponding to a first direction); and a second breather passage having an opening at a position above the liquid fuel in the tank bulge section when the engine generator is inclined in the left direction (a second direction).

An example engine-driven generators includes: a stator assembly having first mounting holes; a first generator housing configured to couple the stator assembly to an engine, and having second mounting holes; first stator alignment hardware configured to align the first mounting holes of the stator assembly with corresponding ones of the second mounting holes of the first generator housing; stator securing hardware configured to secure the stator assembly in cooperation with the first stator alignment hardware; first locating faces configured to mate with mating faces of corresponding ones of the second mounting holes to locate the first mounting holes with the second mounting holes; and first housing securing hardware configured to secure the first generator housing to the stator assembly.

In general, a generator set system may include a primary module including: an engine; a generator coupled to the engine and configured to convert mechanical energy of the engine to electrical energy; a primary frame configured to support the engine and the generator; and a first coupling. The generator set system also may include a secondary module including a secondary module including: at least one of a heat recovery module, an exhaust module, a cooling system module, a fuel system module, a solar power module, a battery module, an electrical system module, an air intake module, or an air outlet module; a secondary frame; and a second coupling. The first coupling and the second coupling are configured to automatically electrically or fluidically couple the primary module to the secondary module upon assembling the primary frame and the secondary frame.

An engine is arranged in a lower part of a housing, an alternator and a fan are coaxially joined to an output shaft of the engine, a recoil starter that starts the engine is arranged in front of the fan, a fuel tank is arranged in an upper part of the housing, and a canister containing activated carbon is arranged between the fuel tank and the output shaft.

Ruggedized generators can operate using both medium and heavy fuels and output at least 5 kWe of power, yet are quiet, compact in size, and reliable.

Power systems and enclosures having a configurable cooling air flow are disclosed. The power system includes an enclosure; an air inlet location, a first air outlet location, a second air outlet location, a fan assembly, and one or more relocatable covers to obstruct the first and second air outlet locations. The air inlet location may be at a first location on an exterior of the enclosure to permit intake of air from the exterior of the enclosure to an interior of the enclosure. The first air outlet location may be at a second location on the exterior of the enclosure to expel air taken in through the air inlet location, while the second air outlet location at a third location on the exterior of the enclosure to expel air taken in through the air inlet location.

The present invention relates to the technical field of heat dissipation of a complete general-purpose machine, comprising: dividing an inner cavity of a housing of a general-purpose machine generator into a low-temperature zone and a high-temperature zone, wherein an end portion of the air deflector is close to a device mounted on the inner wall of the housing, and has a gap for communicating the low-temperature zone and the high-temperature zone with a component mounted on the inner wall of the housing, and guide the air flow to enter from an air inlet of the low-temperature zone of the housing to firstly flow through a heat-generating assembly located in the low-temperature zone, then enter from the gap into the high-temperature zone to flow through the heat-generating assembly located in the high-temperature zone, and then flow out from an air outlet to cool the internal members of the general-purpose machine generator.

A generator includes an internal combustion engine including an engine block including a cylinder including a piston, a crankshaft configured to rotate about a crankshaft axis in response to movement by the piston, and a spark plug configured to periodically generate a spark to ignite fuel in the cylinder to control the movement of the piston. The generator further includes an alternator including a rotor and a stator, the rotor configured to rotate with the rotation of the crankshaft to generate alternating current electrical power, a controller configured to control a rate of fuel supply to the internal combustion engine, and a switch configured to selectively enable the flow of a first type of fuel into the cylinder and disable the flow of a second type of fuel, wherein the controller is configured to receive an indication of a fuel type based on a position of the switch.