| 摘要 |
Gas injection system, particularly of methane, for an internal combustion engine, comprising a plurality of electromagnetically controlled injectors associated to the various cylinders of the engine, a gas distributing manifold communicating with the injectors, a reservoir feeding the distributing manifold, where the pressurised gas is accumulated. A pressure regulating valve is interposed in the connection between the reservoir and is controlled by an electronic control unit so to vary the pressure of the gas in the distributing manifold according to the signals output by sensors of the pressure in the distributing manifold and in the line feeding the gas from the reservoir, also to obtain a pressure in the distributing manifold which is essentially equal to a prefixed theoretical value that the control unit detects according to one or more operative parameters of the engine on the basis of prefixed theoretical pressure values of the pressure stored in maps to be obtained in the distribution manifold as the conditions of operation of the engine vary. <IMAGE> |
