F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
F04F1/10—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped of multiple type, e.g. with two or more units in parallel
Pompe volumetrique a deux etages pour gaz de petrole liquefies en phase liquide, et procede d'injection de carburant pour moteur de vehicule automobile utilisant une telle pompe