630 results about "Engine-generator" patented technology

A frame type engine generator having an engine, a generator connected with the engine and driven by the engine and a supporting frame for supporting the engine and generator therein is closed at the front surface of the supporting frame with a control panel, closed at the rear surface thereof with a muffler cover and closed at the top surface thereof with a fuel tank. To raise a noise reduction performance of the engine generator, the left side surface of the supporting frame is closed with a left panel and the right side surface thereof is closed with a right panel. The left and right panels have a double-walled structure including an inner panel and an outer panel, respectively. The left and right panels are detachably attached to the supporting frame through a rubber seal, respectively.

A thermoacoustic engine-generator that converts waste heat into electrical power. Thermal energy is converted to useful work via temperature-pressure amplification of periodic acoustic traveling waves in a compressible working fluid which cause the armature of a linear alternator to reciprocate and produce alternating current electrical energy. An external oscillator initiates reciprocating motion in the armature of a linear alternator. The armature is a combination fluid pump and fluid motor as well as the induction armature of a linear alternator. The pump end of the armature generates an acoustic traveling wave with each cycle of the armature. The traveling wave enters a waveguide-heat exchanger and is amplified in temperature, pressure and propagation velocity by thermal conduction of energy through the wall of the waveguide. The amplified traveling wave acts upon the opposite end of the armature, causing it to reciprocate within the magnetic field windings of the generator, and generate an electrical current as well as a new acoustic traveling wave. When the operating temperature gradient is attained across the hot and cold heat exchangers, the thermoacoustic engine-generator becomes acoustically resonant and self-regenerative, and will continue to operate as long as the thermal gradient is maintained. The theoretical conversion efficiency is dependent on the thermal gradient, and is 63% of Carnot.

An electronically controlled electrical power generator comprises a generator driven by a heat engine, operated by control means, and carrying an electrical load. Operation of the heat engine is at wide open throttle. Control over engine operation and electrical output of the generator is achieved by electronically manipulating the electric load, and / or adjusting excitation levels at the generator's magnetic fields, so as to change engine / generator equilibrium speed. In a beneficial embodiment, the generator is powered by an energy storage unit, to temporarily act as a motor and rotate the engine when starting, and during power absorbing strokes.