| abstract |
An engine unit, particularly for urban transport, comprising an engine ( 3 ) supplied with a compressed gas and having a expansion chamber ( 9 ), a liquid gas tank ( 28 ) in communication with the engine ( 3 ), and means (M, M′) for gasifying the liquid gas, which are interposed between the liquid gas tank ( 28 ) and the engine ( 3 ) for obtaining compressed gas. The gasifying means (M) comprise a gasification chamber ( 22 ) in communication with the liquid gas tank ( 28 ) and a liquid fuel tank ( 39 ) which is connected to the gasification chamber ( 22 ). The gasification chamber ( 22 ) is in fluid communication with both the liquid fuel tank ( 39 ) for the combustion of the liquid fuel with the oxygen of the liquid gas ( 22 ), and the expansion chamber ( 9 ) so that the compressed liquid gas and gaseous products of combustion process are used to do useful work. |