A power generating apparatus and vector control method thereof are provided. The apparatus includes a rotor with plurality of symmetric phase windings, a stator with a single phase winding, sensors and an excitation control device. Current sensors on the stator side and on the rotor side are configured to measure the amplitudes of the load current and the phase current of the rotor respectively. A position sensor is configured to measure the angle of the rotor. The excitation control device is configured to regulate the engine speed responsive to load power. The excitation control device also generates a modulating signal in accordance with the target voltage vector of the rotor and the slip angle and regulates the excitation current in the phase windings of the stator with the modulating signal.

A power supply apparatus is provided in which a cover can be easily attached to a housing without using attachment jigs. Provided is a power supply apparatus that holds a battery and an inverter in a housing, wherein a groove portion for drainage is formed on at least an upper part of an opening portion of the housing, a cover that covers the opening portion is arranged on the opening portion, and the cover includes at least one first fixing claw inserted into the groove portion and at least one second fixing claw that presses the groove portion from an outside.

A portable generator includes a combustion engine. The portable generator includes an electric generator coupled to the combustion engine. The portable generator can include a load bank. When the electric generator operates at a first voltage and generates less than a threshold amount, the load bank is coupled to the electric generator in a first configuration. When the electric generator operates at a second voltage that is different than the first voltage, the load bank is coupled to the electric generator in a second configuration that is different than the first configuration.

A system provides a fuel source adapter for a combustion engine. The fuel source adapter is located at least partially between an air intake and the combustion chamber of the engine, such as at the carburetor or throttle body. The combustion chamber receives airflow from the air intake manifold that is delivered through an airflow passage. The fuel source adapter has a spacer plate portion and a velocity stack. The velocity stack extends from the spacer plate to the air intake manifold. An axial airflow passage extends through the velocity stack and the spacer plate. The axial airflow passage is aligned with the airflow passage of the carburetor or throttle body. The spacer plate has a transverse fuel inlet. The transverse fuel inlet extends to the axial airflow passage and enables a fluid connection to the axial airflow passage.

A portable engine-generator is described having an engine and a generator coupled to the engine. An engine mount has a mounting plate coupled to the engine and also includes a frame. An outer housing surrounds the engine, generator and frame. At least one handle is coupled to the outer housing. The housing is defined in three sections; a lower section, a middle section and an upper section. The three housing sections are coupled to the frame.

An engine-driven working machine capable of decreasing the number of components is provided. An engine-driven working machine 10 is a generator in which an outer case 12 is formed to extend in a longitudinal direction, and an engine 15 and a muffler 67 are housed in an inside 13 of the outer case 12. In the generator 10, a crankshaft 41 is disposed to intersect the longitudinal direction of the outer case 12. A cooling fan 17 is provided on an extension line 73 of the crankshaft 41. Further, a fan cover is provided at the cooling fan 17 side. Further, a shroud 82 is provided at an opposite side from the fan cover 81.

An engine-driven generator includes a fuel tank disposed in front of a cooling fan, an air guide space defined between the fuel tank and the cooling fan, an inverter disposed beside a lateral side part of the air guide space, and an air shroud provided between the inverter and the air guide space. The fuel tank is vertically elongated to face a cylinder block of a vertical engine. A storage space having the inverter disposed therein is connected to the air guide space via the air shroud.

An engine-driven working machine capable of suppressing vibration, and further securing output power of an engine is provided. An engine-driven working machine 10 is a generator in which an outer case 12 is formed to be substantially rectangular in plan view that extends in a longitudinal direction, and an engine 15 is housed in an inside 13 of the outer case 12. In the generator 10, a crankshaft 41 is disposed to intersect the longitudinal direction of the outer case 12. Further, an intake port 44 and an exhaust port 45 are disposed in the longitudinal direction of the outer case 12. Furthermore, a carburetor 61 is disposed at a side of the intake port 44, and a muffler 67 is disposed at a side of the exhaust port 45.

An adaptor includes a body having a cap portion, a bottle portion and an optional collar between the cap portion and the bottle portion. A supply fitting and a return fitting are coupled to the cap portion of the body. The adaptor may be coupled to a liquid fuel bottle, such as a white gasoline container, to form a removable fuel tank that may be used with a portable generator having a carbureted internal combustion engine.

A fuel-tank-equipped working machine is provided, which is capable of securing a fuel tank to be large in a state where the fuel-tank-equipped working machine is secured to be compact. A generator 10 as a working machine includes a fuel tank 25 supported at an outer case 12. The working machine 10 includes a tank opening 35 that is formed at the outer case 12, a mounting concave portion 38 that is formed on the fuel tank 25, and a cushion portion 37 that is capable of being housed in the mounting concave portion 38. The tank opening 35 is formed so as to be able to expose an upper half part 25a of the fuel tank 25 to an outside 14 of the outer case 12. Further, the cushion portion 37 has a fitting groove 63 capable of being fitted to an opening rim 36 of the tank opening 35.