LIQUID-PHASE GAS FUEL METHOD AND DEVICE INJECTION FOR AN INTERNAL COMBUSTION ENGINE

摘要

The invention concerns a device for liquid-phase injection into an internal combustion engine of a fuel having a boiling point lower than room temperature, at ambient pressure. The device comprises a close circuit including: a pump (8), a feeding ramp (4) connected to injectors (2) through by-pass conduits (13), closure means (7) arranged downstream of the ramp so as to close the circuit, remote control means for the closure means, wherein the pump has an admissible delivery pressure at least equal to the liquefying pressure of the fuel in temperature conditions of the operating engine, the liquefying pressure being obtained when the pump delivers on the circuit closed by the closure means. The invention also concerns a method for liquid injection into an engine.