DUAL-FUEL DIRECT INJECTION SUPPLY SYSTEM Russian patent published in 2022 - IPC F02D19/06 F02B69/04 F02M43/04 F02D19/08 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to fuel supply systems. Dual-fuel supply system (100) comprises combustible liquid and gas supply lines (160, 170) and multiple nozzles (150) communicating therewith. The electronic control unit (ECU) is configured to control the supply of combustible liquid and gas to the nozzles (150). The pressure regulator apparatus (1) comprises a tool for establishing selective communication between the inlet channel (2) and the outlet channel (3). The first pressure sensor (171) and the second pressure sensor (161) of the supply lines (170, 160) transmit signals to the ECU. The ECU is configured to generate a command signal in accordance with the feedback logic wherein the output pressure of the pressure regulator apparatus (1) follows the reference pressure. The tool for establishing selective communication comprises an electric valve (4) receiving the command signal. The pressure regulator apparatus (1) is configured to supply the combustible gas from the outlet channel (3) to the combustible gas supply line (170) with an output pressure below the input pressure in response to said command signal.

EFFECT: increase in the reliability and safety and structural simplification of the system.

7 cl, 4 dwg