Patent ID: 6988358
Filing Date: 2006-01-24
Classification: F02G

Abstract:
1. A method of making electricity and recovering the compression energy in an engine comprising: supplying compressed natural gas from a high pressure main line to a combustion chamber; supplying compressed air from a high pressure air vessel to the combustion chamber from the high-pressure air vessel; burning said fuel and air in said combustion chamber to form a compressed combustion gas; opening an intake valve and supplying said compressed combustion gas to a positive displacement chamber containing a reciprocating piston such that said compressed combustion gas expands forcing said piston in a direction that increases the volume of the positive displacement cylinder to form an expanded gas; closing said intake valve and opening an exhaust valve and allowing the expanded gas to exit said displacement chamber while said piston is moving in a direction which decreases the volume of the positive displacement chamber to provide a exhaust gas and thereby produce rotational energy; and driving an electrical generator with said rotational energy to produce electricity.