(ZA9800325-A)      The energy conversion device includes an acoustic resonator. A pulse combustion mechanism creates a standing wave within the resonator. An electric alternator is coupled to the resonator so as to convert acoustically driven mechanical vibrations into electrical power. The pulse combustion mechanism comprises at least one inlet which feeds reactants into the resonator, and an outlet to allow exhaust gas to escape from the resonator.    The pulse combustion mechanism also has a fuel ignition device which provides a spark to a region containing the fuel within the resonator. A piston coupled to the resonator is driven for mechanical movement by dynamic pressure of the standing wave. The piston is coupled to the alternator. The alternator is attached to the resonator and movement of the resonator causes movement of at least a part of the alternator. The alternator comprises an armature and a stator.    ADVANTAGE -   Maximises acoustic reaction force for given fuel consumption rate. Increases power density by providing tuned induction well as pre-heating and pre-mixing of combustion reactant.    (US5892293-A)      The energy conversion device includes an acoustic resonator. A pulse combustion mechanism creates a standing wave within the resonator. An electric alternator is coupled to the resonator so as to convert acoustically driven mechanical vibrations into electrical power. The pulse combustion mechanism comprises at least one inlet which feeds reactants into the resonator, and an outlet to allow exhaust gas to escape from the resonator.    The pulse combustion mechanism also has a fuel ignition device which provides a spark to a region containing the fuel within the resonator. A piston coupled to the resonator is driven for mechanical movement by dynamic pressure of the standing wave. The piston is coupled to the alternator. The alternator is attached to the resonator and movement of the resonator causes movement of at least a part of the alternator. The alternator comprises an armature and a stator.    ADVANTAGE -   Maximises acoustic reaction force for given fuel consumption rate. Increases power density by providing tuned induction well as pre-heating and pre-mixing of combustion reactant.    (EP953224-A1)      The energy conversion device includes an acoustic resonator. A pulse combustion mechanism creates a standing wave within the resonator. An electric alternator is coupled to the resonator so as to convert acoustically driven mechanical vibrations into electrical power. The pulse combustion mechanism comprises at least one inlet which feeds reactants into the resonator, and an outlet to allow exhaust gas to escape from the resonator.    The pulse combustion mechanism also has a fuel ignition device which provides a spark to a region containing the fuel within the resonator. A piston coupled to the resonator is driven for mechanical movement by dynamic pressure of the standing wave. The piston is coupled to the alternator. The alternator is attached to the resonator and movement of the resonator causes movement of at least a part of the alternator. The alternator comprises an armature and a stator.    ADVANTAGE -   Maximises acoustic reaction force for given fuel consumption rate. Increases power density by providing tuned induction well as pre-heating and pre-mixing of combustion reactant.    (CN1250556-A)      The energy conversion device includes an acoustic resonator. A pulse combustion mechanism creates a standing wave within the resonator. An electric alternator is coupled to the resonator so as to convert acoustically driven mechanical vibrations into electrical power. The pulse combustion mechanism comprises at least one inlet which feeds reactants into the resonator, and an outlet to allow exhaust gas to escape from the resonator.    The pulse combustion mechanism also has a fuel ignition device which provides a spark to a region containing the fuel within the resonator. A piston coupled to the resonator is driven for mechanical movement by dynamic pressure of the standing wave. The piston is coupled to the alternator. The alternator is attached to the resonator and movement of the resonator causes movement of at least a part of the alternator. The alternator comprises an armature and a stator.    ADVANTAGE -   Maximises acoustic reaction force for given fuel consumption rate. Increases power density by providing tuned induction well as pre-heating and pre-mixing of combustion reactant.    (TW374827-A)      The energy conversion device includes an acoustic resonator. A pulse combustion mechanism creates a standing wave within the resonator. An electric alternator is coupled to the resonator so as to convert acoustically driven mechanical vibrations into electrical power. The pulse combustion mechanism comprises at least one inlet which feeds reactants into the resonator, and an outlet to allow exhaust gas to escape from the resonator.    The pulse combustion mechanism also has a fuel ignition device which provides a spark to a region containing the fuel within the resonator. A piston coupled to the resonator is driven for mechanical movement by dynamic pressure of the standing wave. The piston is coupled to the alternator. The alternator is attached to the resonator and movement of the resonator causes movement of at least a part of the alternator. The alternator comprises an armature and a stator.    ADVANTAGE -   Maximises acoustic reaction force for given fuel consumption rate. Increases power density by providing tuned induction well as pre-heating and pre-mixing of combustion reactant.