LPG direct injection engine

Liquefied petroleum gas direct injection engine (100) comprising at least one cylinder with a combustion chamber (1) having a spark plug (2), one or more intake valves (4), and one or more exhaust valves (5). The engine (100) further comprises: at least one injector (6) for injecting liquefied petroleum gas in liquid state directly into the combustion chamber, the liquefied petroleum gas being injected at a pre-established pressure value; a high pressure pump (9) for feeding pressurized liquefied petroleum gas to at least one injector (6); and an electronic control unit (13) configured to operate the at least one injector (6) for injecting the liquefied petroleum gas during a specific injection time period or periods such that a predefined target mass of liquefied petroleum gas is injected, and between 360 º BTDC and 60 º BTDC of the engine cycle.